WO2003088509A3 - Data-directed frequency-and-phase lock loop for decoding an offset-qam modulated signal having a pilot - Google Patents

Data-directed frequency-and-phase lock loop for decoding an offset-qam modulated signal having a pilot Download PDF

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Publication number
WO2003088509A3
WO2003088509A3 PCT/US2003/009959 US0309959W WO03088509A3 WO 2003088509 A3 WO2003088509 A3 WO 2003088509A3 US 0309959 W US0309959 W US 0309959W WO 03088509 A3 WO03088509 A3 WO 03088509A3
Authority
WO
WIPO (PCT)
Prior art keywords
pilot
data
offset
directed
phase lock
Prior art date
Application number
PCT/US2003/009959
Other languages
French (fr)
Other versions
WO2003088509A2 (en
Inventor
Richard W Citta
Scott M Lopresto
Jingsong Xia
Wenjun Zhang
Original Assignee
Linx Electronics Inc
Richard W Citta
Scott M Lopresto
Jingsong Xia
Wenjun Zhang
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Linx Electronics Inc, Richard W Citta, Scott M Lopresto, Jingsong Xia, Wenjun Zhang filed Critical Linx Electronics Inc
Priority to KR10-2004-7014291A priority Critical patent/KR20050008656A/en
Priority to CN038079143A priority patent/CN1647476B/en
Priority to BR0308685-2A priority patent/BR0308685A/en
Priority to AU2003220628A priority patent/AU2003220628A1/en
Publication of WO2003088509A2 publication Critical patent/WO2003088509A2/en
Publication of WO2003088509A3 publication Critical patent/WO2003088509A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/093—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal using special filtering or amplification characteristics in the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H03L7/185—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number using a mixer in the loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0057—Closed loops quadrature phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0083—Signalling arrangements
    • H04L2027/0089—In-band signals

Abstract

A data-and-pilot directed frequency-and-phase lock loop for an offset-QAM modulated signal having a pilot signal comprises a pilot acquisition loop and a pair of data-directed acquisition loops. The pilot is extracted from the main signal by a pilot filter, then used both by the pilot acquisition loop and to remove the pilot from the signal to the data-directed acquisition loops. The outputs of the pilot and the two data-directed acquisition loops are summed and returned to the VCO to complete the feedback loop.
PCT/US2003/009959 2002-04-05 2003-04-02 Data-directed frequency-and-phase lock loop for decoding an offset-qam modulated signal having a pilot WO2003088509A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR10-2004-7014291A KR20050008656A (en) 2002-04-05 2003-04-02 Data-directed frequency-and-phase lock loop for decoding an offset-qam modulated signal having a pilot
CN038079143A CN1647476B (en) 2002-04-05 2003-04-02 Data-directed frequency-and-phase lock loop for decoding an offset-qam modulated signal having a pilot
BR0308685-2A BR0308685A (en) 2002-04-05 2003-04-02 Data-driven frequency and phase blocking link to decode a qam offset modulated signal having a pilot
AU2003220628A AU2003220628A1 (en) 2002-04-05 2003-04-02 Data-directed frequency-and-phase lock loop for decoding an offset-qam modulated signal having a pilot

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US37029602P 2002-04-05 2002-04-05
US37029502P 2002-04-05 2002-04-05
US37028302P 2002-04-05 2002-04-05
US60/370,296 2002-04-05
US60/370,295 2002-04-05
US60/370,283 2002-04-05
US10/404,553 2003-04-01
US10/404,553 US7272203B2 (en) 2002-04-05 2003-04-01 Data-directed frequency-and-phase lock loop for decoding an offset-QAM modulated signal having a pilot

Publications (2)

Publication Number Publication Date
WO2003088509A2 WO2003088509A2 (en) 2003-10-23
WO2003088509A3 true WO2003088509A3 (en) 2004-02-05

Family

ID=29255573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/009959 WO2003088509A2 (en) 2002-04-05 2003-04-02 Data-directed frequency-and-phase lock loop for decoding an offset-qam modulated signal having a pilot

Country Status (6)

Country Link
US (1) US7272203B2 (en)
KR (1) KR20050008656A (en)
CN (1) CN1647476B (en)
AU (1) AU2003220628A1 (en)
BR (1) BR0308685A (en)
WO (1) WO2003088509A2 (en)

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KR100577703B1 (en) 2004-08-27 2006-05-10 삼성전자주식회사 Carrier recovery apparatus for vsb type receiver and methods thereof
JP2009088972A (en) * 2007-09-28 2009-04-23 Toshiba Corp Receiving device for wireless communication
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US8704571B2 (en) * 2011-11-14 2014-04-22 Rockwell Automation Technologies, Inc. Phase-locked-loop with quadrature tracking filter for synchronizing an electric grid
CN104181558A (en) * 2013-05-24 2014-12-03 凹凸电子（武汉）有限公司 GPS receiver and method for judging tracking loop state of GPS receiver

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Also Published As

Publication number Publication date
KR20050008656A (en) 2005-01-21
AU2003220628A1 (en) 2003-10-27
WO2003088509A2 (en) 2003-10-23
AU2003220628A8 (en) 2003-10-27
US7272203B2 (en) 2007-09-18
CN1647476A (en) 2005-07-27
US20050074082A1 (en) 2005-04-07
CN1647476B (en) 2011-01-19
BR0308685A (en) 2005-02-15

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