CN103685099A - A method and an apparatus for performing frequency conversion adjustment on a signal - Google Patents
A method and an apparatus for performing frequency conversion adjustment on a signal Download PDFInfo
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- CN103685099A CN103685099A CN201210361782.2A CN201210361782A CN103685099A CN 103685099 A CN103685099 A CN 103685099A CN 201210361782 A CN201210361782 A CN 201210361782A CN 103685099 A CN103685099 A CN 103685099A
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Abstract
The invention discloses a method and an apparatus for performing frequency conversion adjustment on a signal. The main content of the method comprises: determining the system information of a received signal by using a corresponding relation between preset signal indication information and frequency conversion parameters, further obtaining a frequency conversion parameter corresponding to the determined system information, and performing frequency conversion adjustment on the received signal with the obtained frequency conversion parameter. Compared with an apparatus in the prior art, a set of apparatus may determine the frequency conversion parameter for performing frequency conversion adjustment on the signal according to the difference of the systems of the received signals, and adjusts the received signal with the frequency conversion parameter so as to achieve effects of decreasing the amount of devices in a frequency conversion system, increasing the universality of the frequency conversion system, achieving frequency conversion processing on signals with different systems by using just one set of frequency conversion system, and saving communication resource.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of method and apparatus that signal is carried out to frequency conversion adjustment.
Background technology
Along with the development of mobile communication technology, it is more and more valuable that communication spectrum resource becomes.In order more effectively to utilize frequency spectrum resource, many communication systems have all adopted multi-transceiver technology, and the synthetic of carrier wave will produce larger peak-to-average force ratio, and this has proposed higher linear requirement to transmitter.In order to solve the problem of power amplifier linearity requirement, tend to more adopt digital technology to realize, before carrying out digital pre-distortion processing, first the digital baseband signal receiving is carried out to Digital Up Convert processing, and when receiving radio-frequency input signals, the radio-frequency input signals receiving is carried out to Digital Down Convert processing.
In said process, digital signal is carried out upconversion process and is mainly comprised: the digital signal to input is carried out the conversion of frequency, and completes after the modulation of digital signal and mixing, to power amplifier output mixed frequency signal at a high speed.
While utilizing prior art to carry out upconversion process to the digital signal of input, conventionally the mode adopting: for the signal of different systems or standard of the same race but the signal configures different processing of different transmission rates needs multistage FIR filter or half-band filter in this processing procedure.
That is to say, while carrying out upconversion process for the signal of different systems, need to provide different treatment channel, for example: for GSM signal, by equipment 1, carry out upconversion process, the GSM signal that 1 pair of this equipment has same speed carries out upconversion process, specific upper side frequency processing parameter A is set in equipment 1, specific GSM signal is carried out to upconversion process; TD-SCDMA signal is carried out to upconversion process by equipment 2, and the TD-SCDMA signal that 2 pairs of this equipment have same speed carries out upconversion process, and specific upconversion process B parameter is set in equipment 2, and specific TD-SCDMA signal is carried out to upconversion process; Wherein, equipment 1 is different from equipment 2, and processing parameter A is different for the treatment of B parameter.
As can be seen here, utilize prior art to carry out upconversion process to the digital signal of input, in upconversion process system, the signal of specific standard is processed by specific equipment, it is different that the signal of different systems carries out the equipment of upconversion process, make like this treatment facility in upconversion process system separate, affected the compatibility of devices in system, also caused to a certain extent the waste of device resource.
Identical therewith, the mode of radio-frequency input signals being carried out to down-converted is digital signal to be carried out to the inverse process of upconversion process, mixed frequency signal at a high speed is first carried out to separation, reduce the frequency of its signal, finally export the baseband signal of low speed, therefore,, when the baseband signal receiving is carried out to down-converted, also there are the problems referred to above.
In sum, in the frequency conversion system of existing digital signal, owing to utilizing different equipment to carry out frequency-conversion processing to the signal of different systems, and do not there is compatibility between distinct device, cause the problem that in existing frequency conversion system, system is too complicated and the communication resource is wasted.
Summary of the invention
The embodiment of the present invention provides a kind of method and apparatus that signal is carried out to frequency conversion adjustment, for solving prior art, to the signal of different systems, utilize different equipment to carry out frequency-conversion processing, the problem that in the existing frequency conversion system causing, system is too complicated and the communication resource is wasted.
Signal is carried out to a method for frequency conversion adjustment, described method comprises:
Determine the standard information of the signal receiving;
According to the corresponding relation between the standard information of default signal and frequency conversion parameter, obtain frequency conversion parameter corresponding to described definite standard information;
The frequency conversion parameter that utilization obtains is carried out frequency conversion adjustment to this signal receiving.
Signal is carried out to an equipment for frequency conversion adjustment, described equipment comprises:
Determination module, for determining the standard information of the signal receiving;
Frequency conversion parameter configuration module, for according to the corresponding relation between the standard information of default signal and frequency conversion parameter, obtains frequency conversion parameter corresponding to described definite standard information;
Adjusting module, for utilizing the frequency conversion parameter obtaining to carry out frequency conversion adjustment to this signal receiving.
Beneficial effect of the present invention is as follows:
The signal designation information that embodiment of the present invention utilization sets in advance and the corresponding relation between frequency conversion parameter, standard information is to the received signal determined, and further obtain frequency conversion parameter corresponding to described definite standard information, the frequency conversion parameter that utilization obtains is carried out frequency conversion adjustment to this signal receiving, compared with prior art, can be by a set of equipment according to the difference of the standard of the signal receiving, determine the frequency conversion parameter that this signal is carried out to frequency conversion adjustment, and utilize this frequency conversion parameter to adjust this signal receiving, reduced the quantity of equipment in frequency conversion system, improved the versatility of frequency conversion system, realized the frequency-conversion processing of a set of frequency conversion system to the signal of different systems, saved the communication resource.
Accompanying drawing explanation
Fig. 1 is a kind of flow chart that signal is carried out to the method for frequency conversion adjustment of the embodiment of the present invention one;
Fig. 2 is for being separated into this railway digital signal after delay process the structural representation of N railway digital signal;
Fig. 3 be by the deposit data after separation to memory cell, and the schematic flow sheet reading;
Fig. 4 is a kind of flow chart that signal is carried out to the method for frequency conversion adjustment of the embodiment of the present invention two;
Fig. 5 is a kind of structural representation that signal is carried out to the equipment of frequency conversion adjustment of the embodiment of the present invention three;
Fig. 6 is a kind of structural representation that signal is carried out to the equipment of up-conversion adjustment of the embodiment of the present invention four;
Fig. 7 is the structure chart of the second interpolation filter;
Fig. 8 is a kind of structural representation that signal is carried out to the equipment of down-conversion adjustment of the embodiment of the present invention four.
Embodiment
In order to realize object of the present invention, the embodiment of the present invention provides a kind of method and apparatus that signal is carried out to frequency conversion adjustment, the signal designation information that utilization sets in advance and the corresponding relation between frequency conversion parameter, standard information is to the received signal determined, and further obtain frequency conversion parameter corresponding to described definite standard information, the frequency conversion parameter that utilization obtains is carried out frequency conversion adjustment to this signal receiving, compared with prior art, can be by a set of equipment according to the difference of the standard of the signal receiving, determine the frequency conversion parameter that this signal is carried out to frequency conversion adjustment, and utilize this frequency conversion parameter to adjust this signal receiving, reduced the quantity of equipment in frequency conversion system, improved the versatility of frequency conversion system, realized the frequency-conversion processing of a set of frequency conversion system to the signal of different systems, saved the communication resource.
Below in conjunction with Figure of description, various embodiments of the present invention are described in detail.
Embodiment mono-:
As shown in Figure 1, be a kind of flow chart that signal is carried out to the method for frequency conversion adjustment of the embodiment of the present invention one, described method comprises:
Step 101: the standard information of determining the signal receiving.
In step 101, the standard information of described signal comprises: TD-LTE, Wimax, WCDMA, CDMA, TD-SCDMA and GSM etc.
Step 102: according to the corresponding relation between the standard information of default signal and frequency conversion parameter, obtain frequency conversion parameter corresponding to described definite standard information.
In step 102, the frequency conversion parameter that gains and adjust according to the standard information configuration different systems signal of signal in advance, and set up the standard information of signal and the corresponding relation between frequency conversion parameter, be stored in this locality.
The type of described frequency conversion parameter can be a kind of, can be also multiple.
Particularly, described frequency conversion parameter comprises up-conversion parameter and down-conversion parameter, and wherein, described up-conversion parameter comprises: up-conversion filter factor, up-conversion the first interpolation multiple, up-conversion mixing frequency and up-conversion gain adjustment factor; Described down-conversion parameter comprises: down-conversion gain control parameter, down converted frequencies, down-conversion extracting multiple value, down-conversion filter factor.
It should be noted that, the numerical value of the parameter information comprising in described up-conversion parameter can be identical with the numerical value of the parameter information comprising in described down-conversion parameter, also can be different identical, the size of numerical value is according to the standard Location of requirement of signal, or determine according to actual needs, be not specifically limited here.
According to the corresponding relation between the standard information of default signal and frequency conversion parameter, obtain frequency conversion parameter corresponding to described definite standard information, specifically comprise:
According to the corresponding relation between default digital signal and up-conversion parameter, obtain up-conversion parameter corresponding to described definite standard information; And according to the corresponding relation between default radio-frequency input signals and down-conversion parameter, obtain down-conversion parameter corresponding to described definite standard information.
Step 103: utilize the frequency conversion parameter obtaining to carry out frequency conversion adjustment to this signal receiving.
In step 103, pin is different to the received signal, and the mode of carrying out frequency conversion adjustment is also different.
When the signal receiving is descending digital signal, need to carry out up-conversion gain to the digital signal receiving and adjust, concrete mode is:
First, according to the described up-conversion filter factor obtaining, the digital signal receiving is carried out to filtering processing.
Particularly, when receiving the digital signal of sending by agreement, utilize described up-conversion coefficient to carry out molding filtration processing to the digital signal receiving, the influencing factor such as noise in the digital signal that removal receives, increase the inhibition of inband signaling to out of band signal, and then guarantee the demodulation quality of signal.
More preferably, carrying out when filtering is processed adopting FIR filter, the digital signal receiving is carried out to molding filtration processing; Or also can adopt other to there are other filters of molding filtration function, be not specifically limited here.
Because the transmission rate of the digital signal receiving is lower, carrying out when filtering is processed adopting time-multiplexed mode, greatly improve the utilization rate of multiplier in formed filter, improve the treatment effeciency of signal, avoid the waste of device resource.
Secondly, utilize the digital signal after described up-conversion the first interpolation multiple obtaining is processed filtering to carry out multiple transform operation.
Particularly, in the following manner the digital signal after filtering processing is carried out the transform operation of described interpolation multiple:
First: the digital signal after filtering is processed is carried out delay process;
Secondly: for each the railway digital signal after delay process, carry out following operation:
This railway digital signal after delay process is carried out to product accumulation, obtain N circuit-switched data signal;
According to the writing rate of setting, the N railway digital signal obtaining is write in the memory cell of appointment;
From described memory cell according to the reading rate of setting by the N road Information Read-Out of storage, and the parallel railway digital signal that is accumulated as of the N road information of reading is exported, wherein, N is positive integer, relevant to the coefficient of product accumulator, between described setting writing rate and the reading rate of setting, meet described up-conversion the first difference multiple.
Wherein, as shown in Figure 2, for this railway digital signal after delay process being separated into the structural representation of N railway digital signal, suppose that the digital signal after delay process is X (n), the separated N railway digital signal that obtains after the processing of multiplier and adder, particularly, can obtain by following formula:
Wherein, v (k, l) represents the wherein railway digital signal obtaining, and N represents the way of separation signal, is positive integer, and k value is 0,1,2 ... .., represent the separated total way obtaining, c
1(n) represent filter coefficient, l represents which railway digital signal that separation obtains.
More preferably, successively the N railway digital signal obtaining is write in the memory cell of appointment, specifically comprises:
First: the first address information of determining the data writing of described memory cell.
Secondly: for N railway digital signal, carry out following write operation, until N railway digital signal all writes the memory cell of appointment:
From described definite first address information correspondence position, by a railway digital signal write storage unit;
The next positional information of last position that memory space that one railway digital signal is taken is corresponding is as new first address information;
More preferably, the N railway digital signal-obtaining of storing from described memory cell, specifically comprises:
First: the first address information of determining the reading out data of described memory cell;
Secondly: from position corresponding to described definite first address information, determine the N railway digital signal in memory cell, according to the reading rate of setting by definite N railway digital signal-obtaining.
Embodiment can be as shown in Figure 3, for by the deposit data after separation to memory cell, and the schematic flow sheet reading, particularly:
The first step: the operation that judges current execution is data writing or reading out data, determining while being data writing operation, carries out second step; Determining while being read data operation, carry out the 3rd step.
Second step: the first address positional information of determining data writing, from described first address positional information, the N railway digital signal that separation is obtained is write storage unit successively, and the first address positional information of data writing is changed to former first address positional information adds the positional information that N is corresponding.
The 3rd step: determine the first address positional information of reading out data, from described first address positional information, determine the N railway digital signal in memory cell, and definite N railway digital signal is once read.
More preferably, in described up-conversion parameter, also comprise: up-conversion the second interpolation multiple;
After the digital signal receiving is being carried out filtering processing, determine when digital signal after filtering is processed is multi-carrier signal, utilize the digital signal after described up-conversion the second interpolation multiple is processed filtering to carry out interpolation processing.
When carrying out interpolation processing, can use cic filter, but because cic filter is when processing broadband signal, have the situation that pass band width flatness is inadequate, therefore, in this case, need to carry out bandwidth compensation to the signal after interpolation processing.
The 3rd, the quadrature IQ data of the digital signal obtaining after times transformation of variables and generation are carried out to mixing cumulative, make the frequency of the digital signal that receives reach described up-conversion mixing frequency.
Particularly, because the transmission rate of quadrature IQ data is identical with the transmission rate of the digital signal obtaining after times transformation of variables, the quadrature IQ data of the digital signal obtaining after times transformation of variables and generation are carried out to multiplication mixing, and the result after mixing is added up, make the frequency of the digital signal that receives reach described up-conversion mixing frequency.
Finally, the adjustment that gains of the digital signal after utilizing described up-conversion gain adjustment factor to mixing.
Particularly, described gain adjustment comprises the increase of digital signal amplitude or reduces.
It should be noted that, when the digital signal receiving being carried out to up-conversion gain adjustment, according to the attribute information of each up-conversion parameter obtaining self, the digital signal receiving is processed accordingly; Or successively the digital signal receiving is carried out to upconversion process according to regular hour order; Can also be when receiving the command information mating with the attribute information of up-conversion parameter self, obtain corresponding up-conversion parameter the digital signal receiving is carried out to upconversion process.
When the signal receiving is radio-frequency input signals, need to carry out down-conversion gain to the baseband signal receiving and adjust, concrete mode is:
First, according to the described down-conversion gain control parameter of determining to the radio-frequency input signals the receiving control that gains.
Secondly, the radio-frequency input signals after gain is controlled and the quadrature IQ data of generation are carried out Frequency mixing processing, make the frequency of the baseband signal that receives be adjusted into described down converted frequencies.
The 3rd, the baseband signal value of the taking out computing after utilizing described down-conversion extracting multiple value to frequency adjustment.
The 4th, according to described down-conversion filter factor, the baseband signal after the value of taking out is carried out to filtering processing.
Because down-conversion gain adjustment is the inverse process that up-conversion gain is adjusted, therefore, when carrying out down-conversion gain and adjust, the embodiment of each step is identical with the execution mode of up-conversion, but effect is contrary, does not describe here.
By the scheme of embodiment mono-, the signal designation information that utilization sets in advance and the corresponding relation between frequency conversion parameter, standard information is to the received signal determined, and further obtain frequency conversion parameter corresponding to described definite standard information, the frequency conversion parameter that utilization obtains is carried out frequency conversion adjustment to this signal receiving, compared with prior art, can be by a set of equipment according to the difference of the standard of the signal receiving, determine the frequency conversion parameter that this signal is carried out to frequency conversion adjustment, and utilize this frequency conversion parameter to adjust this signal receiving, reduced the quantity of equipment in frequency conversion system, improved the versatility of frequency conversion system, realized the frequency-conversion processing of a set of frequency conversion system to the signal of different systems, saved the communication resource.
Embodiment bis-:
As shown in Figure 4, be a kind of flow chart that signal is carried out to the method for frequency conversion adjustment of the embodiment of the present invention two.The present embodiment two is detailed descriptions of each step of the present embodiment one, and described method comprises:
Step 201: the standard information of determining the signal receiving.
Step 202: the protocol type of the signal that judgement receives is descending digital signal or up radio-frequency input signals, if descending digital signal performs step 203; If up radio-frequency input signals, performs step 208.
Step 203: according to the corresponding relation between the standard information of default digital signal and up-conversion parameter, obtain up-conversion parameter corresponding to described definite standard information.
Wherein, described up-conversion parameter comprises: up-conversion filter factor, up-conversion the first interpolation multiple, up-conversion mixing frequency and up-conversion gain adjustment factor.
Step 204: the digital signal receiving is carried out to filtering processing according to the described up-conversion filter factor obtaining.
Step 205: utilize the digital signal after the described up-conversion interpolation multiple obtaining is processed filtering to carry out multiple transform operation.
More preferably, the digital signal after filtering processing being carried out to multiple transform operation can utilize the interpolation filter of Farrow structure to complete.
In this step 205, the concrete steps that the digital signal after filtering is processed is carried out multiple transform operation can be divided into three steps:
First, the digital signal of carrying out after filtering processing receiving is carried out to delay process.
Particularly, according to described up-conversion interpolation multiple, the signal way of the digital signal receiving is carried out to symmetrization processing, the digital signal receiving is M road signal, and the digital signal of carrying out after delay process is converted into P road, wherein, P equals the long-pending of M and described up-conversion interpolation multiple.
Secondly, the transmission rate of the digital signal of delay process and clock zone information are changed.
Particularly, successively the P railway digital signal obtaining is write in the memory cell of appointment, specifically comprises:
First: the first address information of determining the data writing of described memory cell.
Secondly: for P railway digital signal, carry out following write operation, until P railway digital signal all writes the memory cell of appointment:
From described definite first address information correspondence position, by a railway digital signal write storage unit;
The next positional information of last position that memory space that one railway digital signal is taken is corresponding is as new first address information;
More preferably, the P railway digital signal-obtaining of storing from described memory cell, specifically comprises:
First: the first address information of determining the reading out data of described memory cell;
Secondly: from position corresponding to described definite first address information, determine the P railway digital signal in memory cell, according to the reading rate of setting by definite P railway digital signal-obtaining.
More preferably, described up-conversion parameter also comprises: up-conversion the second interpolation multiple;
After after digital signal being carried out to filtering processing, before execution mixing is cumulative, after the digital signal receiving is being carried out filtering processing, determine when digital signal after filtering is processed is multi-carrier signal, utilize the digital signal after described up-conversion the second interpolation multiple is processed filtering to carry out interpolation processing.
Step 206: the quadrature IQ data of the digital signal obtaining after times transformation of variables and generation are carried out to mixing cumulative, make the frequency of the digital signal that receives reach described up-conversion mixing frequency.
Step 207: the adjustment that gains of the digital signal after utilizing described up-conversion gain adjustment factor to mixing.
Step 208: according to the corresponding relation between the standard information of default radio-frequency input signals and down-conversion parameter, obtain down-conversion parameter corresponding to described definite standard information.
Wherein, described down-conversion parameter comprises: down-conversion gain control parameter, down converted frequencies, down-conversion extracting multiple value, down-conversion filter factor.
Step 209: according to the described down-conversion gain control parameter of determining to the radio-frequency input signals the receiving control that gains.
Step 210: the radio-frequency input signals after gain is controlled and the quadrature IQ data of generation are carried out Frequency mixing processing, makes the frequency of the radio-frequency input signals that receives be adjusted into described down converted frequencies.
Step 211: the radio-frequency input signals value of the taking out computing after utilizing described down-conversion extracting multiple value to frequency adjustment.
Step 212: the radio-frequency input signals after the value of taking out is carried out to filtering processing according to described down-conversion filter factor.
Embodiment tri-:
As shown in Figure 5, be a kind of structural representation that signal is carried out to the equipment of frequency conversion adjustment of the present embodiment three.Described equipment comprises: determination module 11, frequency conversion parameter configuration module 12 and adjusting module 13, wherein:
Frequency conversion parameter configuration module 12, for according to the corresponding relation between the standard information of default signal and frequency conversion parameter, obtains frequency conversion parameter corresponding to described definite standard information.
Adjusting module 13, for utilizing the frequency conversion parameter obtaining to carry out frequency conversion adjustment to this signal receiving.
Particularly, described frequency conversion parameter is up-conversion parameter.
Described frequency conversion parameter configuration module 12, specifically for according to the corresponding relation between default digital signal and up-conversion parameter, obtain up-conversion parameter corresponding to described definite standard information, described up-conversion parameter comprises: up-conversion filter factor, up-conversion the first interpolation multiple, up-conversion mixing frequency and up-conversion gain adjustment factor.
Described adjusting module 13, specifically comprises: the first filter unit 21, the first arithmetic element 22, the first mixing unit 23 and the first gain adjusting unit 24, wherein:
The first filter unit 21, for carrying out filtering processing according to the described up-conversion filter factor obtaining to the digital signal receiving.
The first arithmetic element 22, for utilizing the digital signal after the described up-conversion interpolation multiple obtaining is processed filtering to carry out multiple transform operation.
The first mixing unit 23, cumulative for the quadrature IQ data of the digital signal obtaining after times transformation of variables and generation being carried out to mixing, make the frequency of the digital signal that receives reach described up-conversion mixing frequency.
The first gain adjusting unit 24, for the adjustment that gains of the digital signal after utilizing described up-conversion gain adjustment factor to mixing.
Described up-conversion parameter also comprises: up-conversion the second interpolation multiple;
Described adjusting module 13, also comprises: processing unit 25, wherein:
Processing unit 25, after carrying out filtering processing, determines when digital signal after filtering is processed is multi-carrier signal for the digital signal when receiving, and utilizes the digital signal after described up-conversion the second interpolation multiple is processed filtering to carry out interpolation processing.
Particularly, described the first arithmetic element 22, specifically comprises:
Delay process subelement 41, carries out delay process for the digital signal after filtering is processed;
Speed is adjusted subelement 42, for this railway digital signal after delay process is carried out to product accumulation, obtains N circuit-switched data signal;
According to the writing rate of setting, the N railway digital signal obtaining is write in the memory cell of appointment;
From described memory cell according to the reading rate of setting by the N road Information Read-Out of storage, and the parallel railway digital signal that is accumulated as of the N road information of reading is exported, wherein, N is positive integer, relevant to the coefficient of product accumulator, between described setting writing rate and the reading rate of setting, meet described up-conversion the first difference multiple.
Described speed is adjusted subelement 42, specifically comprises:
Data writing submodule 51, for determining the first address information of the data writing of described memory cell, and carries out following write operation for N railway digital signal, until N railway digital signal all writes the memory cell of appointment:
From described definite first address information correspondence position, by a railway digital signal write storage unit;
The next positional information of last position that memory space that one railway digital signal is taken is corresponding is as new first address information;
Reading out data submodule 52, for determining the first address information of the reading out data of described memory cell, and from position corresponding to described definite first address information, determine the N railway digital signal in memory cell, according to the reading rate of setting by definite N railway digital signal-obtaining.
Described frequency conversion parameter configuration module 12, specifically for according to the corresponding relation between default baseband signal and down-conversion parameter, obtain down-conversion parameter corresponding to described definite standard information, described down-conversion parameter comprises: down-conversion gain control parameter, down converted frequencies, down-conversion extracting multiple value, down-conversion filter factor.
Particularly, described adjusting module 13, specifically comprises: the second gain adjusting unit 31, the second mixing unit 32, the second arithmetic element 33 and the second filter unit 34, wherein:
The second gain adjusting unit 31, for according to the described down-conversion gain control parameter of determining to the baseband signal the receiving control that gains;
The second mixing unit 32, carries out Frequency mixing processing for the baseband signal after gain is controlled and the quadrature IQ data of generation, makes the frequency of the baseband signal that receives be adjusted into described down converted frequencies;
The second arithmetic element 33, for the baseband signal value of the taking out computing after utilizing described down-conversion extracting multiple value to frequency adjustment;
The second filter unit 34, for carrying out filtering processing according to described down-conversion filter factor to the baseband signal after the value of taking out.
It should be noted that, the equipment described in the embodiment of the present invention three, can be an equipment, and this equipment has comprised the function that function that up-conversion gain adjusts and down-conversion gain are adjusted; Also can be two equipment, an equipment have had the function that up-conversion gain is adjusted, and another equipment has had the function that down-conversion gain is adjusted.
Embodiment tetra-:
As shown in Figure 6, a kind of structural representation that signal is carried out to the equipment of up-conversion adjustment for the embodiment of the present invention four, described equipment comprises: after up-conversion configuration module 61, the first interpolation filter 62, the second interpolation filter 63, the 3rd interpolation filter 64, multichannel NCO generation module 65, multichannel mixing accumulator module 66 and mixing, gain adjusts 67, wherein:
Up-conversion configuration module 61, adjusts parameter for configuring the first interpolation filter coefficient, the first interpolation multiple, the second interpolation multiple, mixing frequency and gain, and the parameter information of configuration is sent to corresponding equipment;
The first interpolation filter 62, for utilizing the first interpolation filter coefficient obtaining, carries out molding filtration processing to the descending digital signal receiving.
Particularly, the first interpolation filter can be FIR interpolation filter.
The second interpolation filter 63, for utilizing the digital signal after described up-conversion the first interpolation multiple obtaining is processed filtering to carry out multiple transform operation.
Particularly, described the second interpolation filter can comprise: Filter Stage(time delay, matrix accumulator), FIFO Stage(specifically comprises: address control, memory cell, data are closed road and data along separate routes) and Compute Stage(specifically comprise: time delay module, the accumulator module that walks abreast and time delay factor generation module), as shown in Figure 7.
The 3rd interpolation filter 64, after carrying out filtering processing, determines when digital signal after filtering is processed is multi-carrier signal for the digital signal when receiving, and utilizes the digital signal after described up-conversion the second interpolation multiple is processed filtering to carry out interpolation processing.
Particularly, the 3rd interpolation filter can be cic filter.
Multichannel NCO generation module 65, for generation of quadrature IQ data;
Multichannel mixing accumulator module 66, cumulative for the quadrature IQ data of the digital signal obtaining after times transformation of variables and generation being carried out to mixing, make the frequency of the digital signal that receives reach described up-conversion mixing frequency;
After mixing, gain adjusts 67, for the adjustment that gains of the digital signal after utilizing described up-conversion gain adjustment factor to mixing.
Fig. 8 is a kind of structural representation that signal is carried out to the equipment of down-conversion adjustment of the embodiment of the present invention four, described equipment comprises: gain adjustment 72, multichannel NCO generation module 73, multichannel frequency mixing module 74, the first decimation filter 75, the second decimation filter 76 and the 3rd decimation filter 77 before down-conversion configuration module 71, mixing, wherein:
Down-conversion configuration module 71, for configuring down-conversion gain control parameter, down converted frequencies, down-conversion the first extracting multiple value, down-conversion the second extracting multiple value and down-conversion filter factor, and sends to corresponding equipment by the parameter information of configuration;
Gain adjusts 72 before mixing, for according to the described down-conversion gain control parameter of determining to the radio-frequency input signals the receiving control that gains;
Multichannel NCO generation module 73, for generation of quadrature IQ data;
Multichannel frequency mixing module 74, carries out Frequency mixing processing for the radio-frequency input signals after gain is controlled and the quadrature IQ data of generation, and the frequency of the radio-frequency input signals receiving is adjusted into described down converted frequencies;
The first decimation filter 75 and the second decimation filter 76, for utilizing described down-conversion the first extracting multiple value and down-conversion the first extracting multiple value successively to the radio-frequency input signals value of the taking out computing after frequency adjustment;
The 3rd decimation filter 77, for carrying out filtering processing according to described down-conversion filter factor to the radio-frequency input signals after the value of taking out.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (16)
1. signal is carried out to a method for frequency conversion adjustment, it is characterized in that, described method comprises:
Determine the standard information of the signal receiving;
According to the corresponding relation between the standard information of default signal and frequency conversion parameter, obtain frequency conversion parameter corresponding to described definite standard information;
The frequency conversion parameter that utilization obtains is carried out frequency conversion adjustment to this signal receiving.
2. the method for claim 1, is characterized in that, described frequency conversion parameter is up-conversion parameter;
According to the corresponding relation between the standard information of default signal and frequency conversion coefficient, obtain frequency conversion coefficient corresponding to described definite standard information, specifically comprise:
According to the corresponding relation between default digital signal and up-conversion parameter, obtain up-conversion parameter corresponding to described definite standard information, described up-conversion parameter comprises: up-conversion filter factor, up-conversion the first interpolation multiple, up-conversion mixing frequency and up-conversion gain adjustment factor.
3. method as claimed in claim 2, is characterized in that, utilizes the frequency conversion coefficient obtaining to carry out frequency conversion adjustment to this signal receiving, and specifically comprises:
According to the described up-conversion filter factor obtaining, the digital signal receiving is carried out to filtering processing, and utilize the digital signal after described up-conversion the first interpolation multiple obtaining is processed filtering to carry out multiple transform operation;
The quadrature IQ data of the digital signal obtaining after times transformation of variables and generation are carried out to mixing cumulative, make the frequency of the digital signal that receives reach described up-conversion mixing frequency;
The adjustment that gains of digital signal after utilizing described up-conversion gain adjustment factor to mixing.
4. method as claimed in claim 3, is characterized in that, described up-conversion parameter also comprises: up-conversion the second interpolation multiple;
After digital signal is carried out to filtering processing, before execution mixing is cumulative, described method also comprises:
After the digital signal receiving is being carried out filtering processing, determine when digital signal after filtering is processed is multi-carrier signal, utilize the digital signal after described up-conversion the second interpolation multiple is processed filtering to carry out interpolation processing.
5. method as claimed in claim 3, is characterized in that, utilizes the digital signal after described up-conversion the first interpolation multiple obtaining is processed filtering to carry out multiple transform operation, specifically comprises:
Digital signal after filtering is processed is carried out delay process;
For each the railway digital signal after delay process, carry out following operation:
This railway digital signal after delay process is carried out to product accumulation, obtain N circuit-switched data signal;
According to the writing rate of setting, the N railway digital signal obtaining is write in the memory cell of appointment;
From described memory cell according to the reading rate of setting by the N road Information Read-Out of storage, and the parallel railway digital signal that is accumulated as of the N road information of reading is exported, wherein, N is positive integer, relevant to the coefficient of product accumulator, between described setting writing rate and the reading rate of setting, meet described up-conversion the first difference multiple.
6. method as claimed in claim 5, is characterized in that, according to the writing rate of setting, the N railway digital signal obtaining is write in the memory cell of appointment, specifically comprises:
Determine the first address information of the data writing of described memory cell;
For N railway digital signal, carry out following write operation, until N railway digital signal all writes the memory cell of appointment:
From described definite first address information correspondence position, by a railway digital signal write storage unit;
The next positional information of last position that memory space that one railway digital signal is taken is corresponding is as new first address information;
The N railway digital signal-obtaining of storing from described memory cell according to the reading rate of setting, specifically comprises:
Determine the first address information of the reading out data of described memory cell;
From position corresponding to described definite first address information, determine the N railway digital signal in memory cell, according to the reading rate of setting by definite N railway digital signal-obtaining.
7. the method for claim 1, is characterized in that, described frequency conversion parameter is down-conversion parameter;
According to the corresponding relation between the standard information of default signal and frequency conversion parameter, obtain frequency conversion parameter corresponding to described definite standard information, specifically comprise:
According to the corresponding relation between default radio-frequency input signals and down-conversion parameter, obtain down-conversion parameter corresponding to described definite standard information, described down-conversion parameter comprises: down-conversion gain control parameter, down converted frequencies, down-conversion extracting multiple value, down-conversion filter factor.
8. method as claimed in claim 7, is characterized in that, utilizes the frequency conversion coefficient obtaining to carry out frequency conversion adjustment to this signal receiving, and specifically comprises:
According to the described down-conversion gain control parameter of determining to the radio-frequency input signals the receiving control that gains;
Radio-frequency input signals after gain is controlled and the quadrature IQ data of generation are carried out Frequency mixing processing, and the frequency of the radio-frequency input signals receiving is adjusted into described down converted frequencies;
The radio-frequency input signals value of taking out computing after utilizing described down-conversion extracting multiple value to frequency adjustment, and according to described down-conversion filter factor, the radio-frequency input signals after the value of taking out is carried out to filtering processing.
9. signal is carried out to an equipment for frequency conversion adjustment, it is characterized in that, described equipment comprises:
Determination module, for determining the standard information of the signal receiving;
Frequency conversion parameter configuration module, for according to the corresponding relation between the standard information of default signal and frequency conversion parameter, obtains frequency conversion parameter corresponding to described definite standard information;
Adjusting module, for utilizing the frequency conversion parameter obtaining to carry out frequency conversion adjustment to this signal receiving.
10. equipment as claimed in claim 9, is characterized in that, described frequency conversion parameter is up-conversion parameter;
Described frequency conversion parameter configuration module, specifically for according to the corresponding relation between default digital signal and up-conversion parameter, obtain up-conversion parameter corresponding to described definite standard information, described up-conversion parameter comprises: up-conversion filter factor, up-conversion the first interpolation multiple, up-conversion mixing frequency and up-conversion gain adjustment factor.
11. equipment as claimed in claim 10, is characterized in that, described adjusting module, specifically comprises:
The first filter unit, for carrying out filtering processing according to the described up-conversion filter factor obtaining to the digital signal receiving;
The first arithmetic element, for utilizing the digital signal after described up-conversion the first interpolation multiple obtaining is processed filtering to carry out multiple transform operation;
The first mixing unit, cumulative for the quadrature IQ data of the digital signal obtaining after times transformation of variables and generation being carried out to mixing, make the frequency of the digital signal that receives reach described up-conversion mixing frequency;
The first gain adjusting unit, for the adjustment that gains of the digital signal after utilizing described up-conversion gain adjustment factor to mixing.
12. equipment as claimed in claim 11, is characterized in that, described adjusting module, also comprises:
Processing unit, after carrying out filtering processing, determines when digital signal after filtering is processed is multi-carrier signal for the digital signal when receiving, and utilizes the digital signal after described up-conversion the second interpolation multiple is processed filtering to carry out interpolation processing.
13. equipment as described in claim 11 or 12, is characterized in that, described the first arithmetic element, specifically comprises:
Delay process subelement, carries out delay process for the digital signal after filtering is processed;
Speed is adjusted subelement, for this railway digital signal after delay process is carried out to product accumulation, obtains N circuit-switched data signal;
According to the writing rate of setting, the N railway digital signal obtaining is write in the memory cell of appointment;
From described memory cell according to the reading rate of setting by the N road Information Read-Out of storage, and the parallel railway digital signal that is accumulated as of the N road information of reading is exported, wherein, N is positive integer, relevant to the coefficient of product accumulator, between described setting writing rate and the reading rate of setting, meet described up-conversion the first difference multiple.
14. equipment as claimed in claim 13, is characterized in that, described speed is adjusted subelement, specifically comprises:
Data writing submodule, for determining the first address information of the data writing of described memory cell, and carries out following write operation for N railway digital signal, until N railway digital signal all writes the memory cell of appointment:
From described definite first address information correspondence position, by a railway digital signal write storage unit;
The next positional information of last position that memory space that one railway digital signal is taken is corresponding is as new first address information;
Reading out data submodule, for determining the first address information of the reading out data of described memory cell, and from position corresponding to described definite first address information, determine the N railway digital signal in memory cell, according to the reading rate of setting by definite N railway digital signal-obtaining.
15. equipment as claimed in claim 9, is characterized in that, described frequency conversion parameter is down-conversion parameter;
Described frequency conversion parameter configuration module, specifically for according to the corresponding relation between default radio-frequency input signals and down-conversion parameter, obtain down-conversion parameter corresponding to described definite standard information, described down-conversion parameter comprises: down-conversion gain control parameter, down converted frequencies, down-conversion extracting multiple value, down-conversion filter factor.
16. equipment as claimed in claim 15, is characterized in that, described adjusting module, specifically comprises:
The second gain adjusting unit, for according to the described down-conversion gain control parameter of determining to the radio-frequency input signals the receiving control that gains;
The second mixing unit, carries out Frequency mixing processing for the radio-frequency input signals after gain is controlled and the quadrature IQ data of generation, makes the frequency of the radio-frequency input signals that receives be adjusted into described down converted frequencies;
The second arithmetic element, for the radio-frequency input signals value of the taking out computing after utilizing described down-conversion extracting multiple value to frequency adjustment;
The second filter unit, for carrying out filtering processing according to described down-conversion filter factor to the radio-frequency input signals after the value of taking out.
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