CA2116736A1 - Decoder Selection - Google Patents
Decoder SelectionInfo
- Publication number
- CA2116736A1 CA2116736A1 CA2116736A CA2116736A CA2116736A1 CA 2116736 A1 CA2116736 A1 CA 2116736A1 CA 2116736 A CA2116736 A CA 2116736A CA 2116736 A CA2116736 A CA 2116736A CA 2116736 A1 CA2116736 A1 CA 2116736A1
- Authority
- CA
- Canada
- Prior art keywords
- channel
- present
- processor
- decoder selection
- facch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
- H04L1/203—Details of error rate determination, e.g. BER, FER or WER
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0046—Code rate detection or code type detection
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
Abstract
The process of the present invention receives encoded data over a channel, decodes the data, and estimates the number of errors induced by the channel. The proper convolutional decoder is chosen by comparing the bit error rates to a threshold that is biased in favor of the Fast Associated Control Channel (FACCH) message being present on the channel.
The selection process of the present invention requires reduced processing time by the processor thereby reducing the power requirements of the processor.
The selection process of the present invention requires reduced processing time by the processor thereby reducing the power requirements of the processor.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2683593A | 1993-03-05 | 1993-03-05 | |
US026,835 | 1993-03-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2116736A1 true CA2116736A1 (en) | 1994-09-06 |
CA2116736C CA2116736C (en) | 1999-08-10 |
Family
ID=21834059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002116736A Expired - Lifetime CA2116736C (en) | 1993-03-05 | 1994-03-01 | Decoder selection |
Country Status (2)
Country | Link |
---|---|
US (1) | US5453997A (en) |
CA (1) | CA2116736C (en) |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5912907A (en) * | 1993-11-22 | 1999-06-15 | Thomson Consumer Electronics, Inc. | Satellite receiver code rate switching apparatus |
JP3360922B2 (en) * | 1994-04-11 | 2003-01-07 | 株式会社日立製作所 | Moving image communication system, image restoration device thereof, and image restoration method thereof |
US5774496A (en) * | 1994-04-26 | 1998-06-30 | Qualcomm Incorporated | Method and apparatus for determining data rate of transmitted variable rate data in a communications receiver |
JP3628359B2 (en) * | 1994-10-19 | 2005-03-09 | 株式会社日立製作所 | Data transfer method, data transmission device, data reception device, and video mail system |
US20010002851A1 (en) * | 1995-04-14 | 2001-06-07 | Takao Shimada | Multimedia data processing system in network |
US5742646A (en) * | 1995-05-05 | 1998-04-21 | Harris Corporation | Method of selecting and switching signal paths in a digital communication system |
US5808573A (en) * | 1996-08-01 | 1998-09-15 | Nec Electronics Incorporated | Methods and structure for sampled-data timing recovery with reduced complexity and latency |
US5949820A (en) * | 1996-08-01 | 1999-09-07 | Nec Electronics Inc. | Method for optimizing an equalization and receive filter |
US5848106A (en) * | 1996-12-16 | 1998-12-08 | Ericsson, Inc. | Receiver decoder circuitry, and associated method, for decoding an encoded signal |
US5881093A (en) * | 1997-02-10 | 1999-03-09 | Motorola, Inc. | Method of interleaving a convolutionally coded signal in a spread spectrum communication system |
US5914989A (en) * | 1997-02-19 | 1999-06-22 | Nec Electronics, Inc. | PRML system with reduced complexity maximum likelihood detector |
US5892464A (en) * | 1997-03-19 | 1999-04-06 | Ericsson Inc. | Message encoding technique for communication systems |
US5828672A (en) * | 1997-04-30 | 1998-10-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Estimation of radio channel bit error rate in a digital radio telecommunication network |
KR100463038B1 (en) * | 1997-09-30 | 2005-04-06 | 삼성전자주식회사 | Decoder chip identification method |
US6400966B1 (en) * | 1997-10-07 | 2002-06-04 | Telefonaktie Bolaget Lm Ericsson (Publ) | Base station architecture for a mobile communications system |
US6282685B1 (en) | 1997-11-20 | 2001-08-28 | Ericsson Inc. | Methods and apparatus for signaling using parity status |
FI104769B (en) * | 1997-12-01 | 2000-03-31 | Nokia Networks Oy | Method and apparatus for identifying a logical channel |
US6009553A (en) * | 1997-12-15 | 1999-12-28 | The Whitaker Corporation | Adaptive error correction for a communications link |
US6112325A (en) * | 1998-01-23 | 2000-08-29 | Dspc Technologies, Ltd. | Method and device for detecting rate |
US6457156B1 (en) * | 1998-01-29 | 2002-09-24 | Adaptec, Inc. | Error correction method |
US6411663B1 (en) * | 1998-04-22 | 2002-06-25 | Oki Electric Industry Co., Ltd. | Convolutional coder and viterbi decoder |
KR100444980B1 (en) * | 1998-08-31 | 2004-10-14 | 삼성전자주식회사 | Method and apparatus for determining data rate of transmitted variable rate data |
US6260168B1 (en) * | 1998-09-23 | 2001-07-10 | Glenayre Electronics, Inc. | Paging system having optional forward error correcting code transmission at the data link layer |
US7042963B1 (en) * | 1998-12-11 | 2006-05-09 | Ericsson Inc. | Methods and apparatus for decoding variably-coded signals based on prior communication |
US6553065B1 (en) | 1999-02-04 | 2003-04-22 | Nokia Corporation | Mobile station employing CRC verification using decoding reliability and methods therefor |
US6308054B2 (en) | 1999-03-02 | 2001-10-23 | Hitachi, Ltd. | Diversity wireless communication method and its wireless communication apparatus |
FI111505B (en) * | 1999-05-31 | 2003-07-31 | Nokia Corp | A method for transmitting control information in a communication system, a communication system, a wireless terminal, and a base station system |
FR2794584B1 (en) * | 1999-06-02 | 2001-09-14 | France Telecom | METHOD FOR BLIND DETECTION OF THE DIGITAL DATA CODING MODE |
FI116992B (en) * | 1999-07-05 | 2006-04-28 | Nokia Corp | Methods, systems, and devices for enhancing audio coding and transmission |
JP3699863B2 (en) * | 1999-07-12 | 2005-09-28 | 株式会社日立コミュニケーションテクノロジー | Error correction code apparatus, error correction code decoding apparatus, and transmission apparatus |
US6848065B1 (en) * | 2000-06-21 | 2005-01-25 | Telefonaktiebolaget Lm Ericsson (Publ) | Bit error rate estimation |
US7020185B1 (en) | 2000-11-28 | 2006-03-28 | Lucent Technologies Inc. | Method and apparatus for determining channel conditions in a communication system |
US7046719B2 (en) * | 2001-03-08 | 2006-05-16 | Motorola, Inc. | Soft handoff between cellular systems employing different encoding rates |
US7613985B2 (en) * | 2003-10-24 | 2009-11-03 | Ikanos Communications, Inc. | Hierarchical trellis coded modulation |
US10116336B2 (en) * | 2014-06-13 | 2018-10-30 | Sandisk Technologies Llc | Error correcting code adjustment for a data storage device |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3078443A (en) * | 1959-01-22 | 1963-02-19 | Alan C Rose | Compound error correction system |
CA1235189A (en) * | 1985-01-14 | 1988-04-12 | Haruhiko Akiyama | Error correction encoding system |
US5051999A (en) * | 1989-03-13 | 1991-09-24 | Motorola, Inc. | Programmable error correcting apparatus within a paging receiver |
US5157672A (en) * | 1989-03-15 | 1992-10-20 | Nec Corporation | Interference detection apparatus for use in digital mobile communications system |
SE465797B (en) * | 1990-03-07 | 1991-10-28 | Ericsson Telefon Ab L M | PROCEDURE TO TRANSFER SYNCHRONIZATION INFORMATION FOR CRYPED TRANSFER IN A MOBILE RADIO SYSTEM |
US5182753A (en) * | 1990-03-20 | 1993-01-26 | Telefonaktiebolaget L M Ericsson | Method of transmitting signaling messages in a mobile radio communication system |
JPH0481054A (en) * | 1990-06-01 | 1992-03-13 | Nec Corp | Data transmission system |
JP3282180B2 (en) * | 1990-08-28 | 2002-05-13 | ソニー株式会社 | Magnetic recording / reproducing device |
US5287556A (en) * | 1990-09-28 | 1994-02-15 | Motorola, Inc. | Interference reduction using an adaptive receiver filter, signal strength, and BER sensing |
US5140627A (en) * | 1990-10-09 | 1992-08-18 | Telefonaktiebolaget L M Ericsson | Handoff procedure that minimizes disturbances to dtmf signalling in a cellular radio system |
US5214675A (en) * | 1991-07-02 | 1993-05-25 | Motorola, Inc. | System and method for calculating channel gain and noise variance of a communication channel |
US5335356A (en) * | 1991-09-05 | 1994-08-02 | Telefonaktiebolaget L M Ericsson | Adaptive resource allocation in a mobile telephone system |
US5392300A (en) * | 1992-11-10 | 1995-02-21 | Motorola, Inc. | Dual mode radio communication unit |
JP2845705B2 (en) * | 1993-01-14 | 1999-01-13 | 日本電気株式会社 | Multi-level coded modulation communication device |
US5402447A (en) * | 1993-03-05 | 1995-03-28 | Motorola, Inc. | Speech decoding in a zero BER environment |
-
1994
- 1994-03-01 CA CA002116736A patent/CA2116736C/en not_active Expired - Lifetime
-
1995
- 1995-02-09 US US08/386,248 patent/US5453997A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
CA2116736C (en) | 1999-08-10 |
US5453997A (en) | 1995-09-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20140303 |