NO20024951D0 - Taktgjenvinningskrets i en QAM-demodulator - Google Patents

Taktgjenvinningskrets i en QAM-demodulator

Info

Publication number
NO20024951D0
NO20024951D0 NO20024951A NO20024951A NO20024951D0 NO 20024951 D0 NO20024951 D0 NO 20024951D0 NO 20024951 A NO20024951 A NO 20024951A NO 20024951 A NO20024951 A NO 20024951A NO 20024951 D0 NO20024951 D0 NO 20024951D0
Authority
NO
Norway
Prior art keywords
recovery circuit
qam demodulator
rate recovery
rate
qam
Prior art date
Application number
NO20024951A
Other languages
English (en)
Norwegian (no)
Inventor
Khaled Maalej
Emmanuel Hamman
Amaury Demol
Yannick Levy
Original Assignee
Atmel Corp
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 Atmel Corp filed Critical Atmel Corp
Publication of NO20024951D0 publication Critical patent/NO20024951D0/no

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
    • H04L27/3809—Amplitude regulation arrangements
    • 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
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block 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
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
    • 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
    • H04L27/3818—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers
    • H04L27/3827—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers in which the carrier is recovered using only the demodulated baseband signals
    • 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
    • H04L27/3845—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier
    • H04L27/3854—Demodulator circuits; Receiver circuits using non - coherent demodulation, i.e. not using a phase synchronous carrier using a non - coherent carrier, including systems with baseband correction for phase or frequency offset
    • H04L27/3872—Compensation for phase rotation in the demodulated signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0032—Correction of carrier offset at baseband and passband
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0036—Correction of carrier offset using a recovered symbol clock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0038—Correction of carrier offset using an equaliser
    • 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
    • H04L2027/0055—Closed loops single 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
    • H04L2027/0044—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
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0071—Control of loops
    • 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
    • H04L2027/0071—Control of loops
    • H04L2027/0079—Switching between loops
    • H04L2027/0081—Switching between loops between loops of different bandwidths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0016—Arrangements for synchronising receiver with transmitter correction of synchronization errors
    • H04L7/002—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation
    • H04L7/0029—Arrangements for synchronising receiver with transmitter correction of synchronization errors correction by interpolation interpolation of received data signal
NO20024951A 2000-04-17 2002-10-15 Taktgjenvinningskrets i en QAM-demodulator NO20024951D0 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/550,883 US6545532B1 (en) 1999-09-08 2000-04-17 Timing recovery circuit in a QAM demodulator
PCT/US2001/040080 WO2002063842A2 (en) 2000-04-17 2001-02-12 Interpolator for timing recovery circuit

Publications (1)

Publication Number Publication Date
NO20024951D0 true NO20024951D0 (no) 2002-10-15

Family

ID=24198958

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20024951A NO20024951D0 (no) 2000-04-17 2002-10-15 Taktgjenvinningskrets i en QAM-demodulator

Country Status (9)

Country Link
US (1) US6545532B1 (US06545532-20030408-M00006.png)
EP (1) EP1338113A2 (US06545532-20030408-M00006.png)
JP (1) JP2004519154A (US06545532-20030408-M00006.png)
CN (1) CN1460341A (US06545532-20030408-M00006.png)
AU (1) AU2001297641A1 (US06545532-20030408-M00006.png)
CA (1) CA2403324A1 (US06545532-20030408-M00006.png)
NO (1) NO20024951D0 (US06545532-20030408-M00006.png)
TW (1) TW578401B (US06545532-20030408-M00006.png)
WO (1) WO2002063842A2 (US06545532-20030408-M00006.png)

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EP1164788A3 (en) * 2000-06-13 2008-10-29 Matsushita Electric Industrial Co., Ltd. Digital broadcast receiving apparatus
ATE426983T1 (de) * 2000-10-05 2009-04-15 Panasonic Corp Digitaler datensender
KR100533606B1 (ko) 2000-10-05 2005-12-05 마쓰시타 덴키 산교 가부시끼 가이샤 링형 네트워크 및 데이터 전송 장치
US7190728B2 (en) * 2000-10-05 2007-03-13 Matsushita Electric Industrial Co., Ltd. Digital data transmitter, transmission line encoding method, and decoding method
WO2002030078A1 (fr) * 2000-10-05 2002-04-11 Matsushita Electric Industrial Co., Ltd. Procede d'initialisation et emetteur de donnees
JP4484355B2 (ja) * 2000-11-22 2010-06-16 富士通マイクロエレクトロニクス株式会社 復調装置、放送システム及び放送受信装置
US7010073B2 (en) * 2001-01-19 2006-03-07 Qualcomm, Incorporated Delay lock loops for wireless communication systems
JP2002247119A (ja) * 2001-02-20 2002-08-30 Advantest Corp シンボル点推定装置、方法、プログラム、および該プログラムを記録した記録媒体ならびに変調解析装置
US20020157058A1 (en) * 2001-02-20 2002-10-24 Cute Ltd. System and method for feedback-based unequal error protection coding
FR2822322A1 (fr) * 2001-03-13 2002-09-20 Koninkl Philips Electronics Nv Modulateur numerique
US6745017B2 (en) * 2001-05-02 2004-06-01 Koninklijke Philips Electronics N.V. Timing recovery switching for an adaptive digital broadband beamforming (antenna diversity) for ATSC terrestrial DTV based on a differentiator
JP3586267B2 (ja) * 2002-06-18 2004-11-10 沖電気工業株式会社 自動利得制御回路
DE60304887T2 (de) * 2002-10-16 2006-08-31 Casio Computer Co., Ltd. Funkwellen Empfangsvorrichtung, Funkwellenuhr, und Repeater
US7738545B2 (en) * 2003-09-30 2010-06-15 Regents Of The University Of Minnesota Pulse shaper design for ultra-wideband communications
EP1862000A2 (en) * 2005-03-24 2007-12-05 Thomson Licensing Non-linear signal distortion detection using multiple signal to noise ratio measurement sources
US7609795B2 (en) * 2005-10-04 2009-10-27 Via Technologies, Inc. Interpolation module, interpolator and methods capable of recovering timing in a timing recovery apparatus
US8381047B2 (en) * 2005-11-30 2013-02-19 Microsoft Corporation Predicting degradation of a communication channel below a threshold based on data transmission errors
US7912694B2 (en) * 2007-01-30 2011-03-22 International Business Machines Corporation Print events in the simulation of a digital system
US8036332B2 (en) 2007-03-30 2011-10-11 4472314 Canada Inc. Communication signal symbol timing error detection and recovery
US8279988B2 (en) * 2007-09-11 2012-10-02 Advanced Receiver Technologies, Llc Efficient channel estimate based timing recovery
US7675443B1 (en) * 2008-06-25 2010-03-09 Atheros Communications, Inc. Saturation detector for an ADC
US8451947B2 (en) * 2008-09-02 2013-05-28 Comtech Ef Data Corp. Burst demodulator
KR20100109107A (ko) * 2009-03-31 2010-10-08 삼성전자주식회사 방송신호수신장치 및 그 제어방법
CN101867539B (zh) * 2010-05-14 2013-05-08 深圳国微技术有限公司 用于有线数字电视的大频偏载波恢复系统及方法
JP2012182594A (ja) * 2011-02-28 2012-09-20 Nec Corp 光送受信システム及び光受信装置
KR20160037656A (ko) * 2014-09-29 2016-04-06 삼성전자주식회사 에러 검출기 및 발진기의 에러 검출 방법
US9137006B1 (en) * 2014-10-22 2015-09-15 The United States Of America As Represented By The Secretary Of The Air Force Non-integer oversampled timing recovery for higher order quadrature modulation communication systems using quadrature and in-phase samples
US9350526B2 (en) * 2014-10-27 2016-05-24 The United States Of America As Represented By The Secretary Of The Air Force Non-integer oversampled timing recovery for higher order quadrature modulation communication systems using in-phase samples
US9319217B1 (en) * 2014-10-28 2016-04-19 The United States Of America As Represented By The Secretary Of The Air Force Non-integer oversampled timing recovery for higher order quadrature modulation communication systems using quadrature-phase samples
US9729119B1 (en) * 2016-03-04 2017-08-08 Atmel Corporation Automatic gain control for received signal strength indication
CN109005428B (zh) * 2018-08-01 2021-10-08 深圳市朗强科技有限公司 图像数据发送、接收方法、电子设备和数据传输系统
US10887077B1 (en) * 2019-07-15 2021-01-05 Mellanox Technologies, Ltd. Method and apparatus for a one bit per symbol timing recovery phase detector
US10862505B1 (en) 2020-02-27 2020-12-08 Nxp Usa, Inc. Arbitrary rate decimator and timing error corrector for an FSK receiver
CN112505434B (zh) * 2020-11-24 2022-08-12 中国电子科技集团公司第三十八研究所 一种无源阵列天线波束扫描特性的测试方法

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US6160443A (en) * 1999-09-08 2000-12-12 Atmel Corporation Dual automatic gain control in a QAM demodulator

Also Published As

Publication number Publication date
US6545532B1 (en) 2003-04-08
EP1338113A2 (en) 2003-08-27
WO2002063842A2 (en) 2002-08-15
JP2004519154A (ja) 2004-06-24
TW578401B (en) 2004-03-01
CA2403324A1 (en) 2002-08-15
WO2002063842A3 (en) 2003-06-05
AU2001297641A1 (en) 2002-08-19
CN1460341A (zh) 2003-12-03

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