HK1057438A1 - Direct digital synthesis in a qam demodulator qam. - Google Patents

Direct digital synthesis in a qam demodulator qam.

Info

Publication number
HK1057438A1
HK1057438A1 HK04100228A HK04100228A HK1057438A1 HK 1057438 A1 HK1057438 A1 HK 1057438A1 HK 04100228 A HK04100228 A HK 04100228A HK 04100228 A HK04100228 A HK 04100228A HK 1057438 A1 HK1057438 A1 HK 1057438A1
Authority
HK
Hong Kong
Prior art keywords
qam
direct digital
digital synthesis
demodulator
qam demodulator
Prior art date
Application number
HK04100228A
Other languages
English (en)
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 HK1057438A1 publication Critical patent/HK1057438A1/xx

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
    • 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
    • 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
    • H04L27/32—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
    • 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
    • H04L27/0014—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
HK04100228A 2000-04-17 2004-01-13 Direct digital synthesis in a qam demodulator qam. HK1057438A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/550,556 US6249179B1 (en) 1999-09-08 2000-04-17 Direct digital synthesis in a QAM demodulator
PCT/US2001/040095 WO2002103976A1 (en) 2000-04-17 2001-02-12 Direct digital synthesis in a qam demodulator

Publications (1)

Publication Number Publication Date
HK1057438A1 true HK1057438A1 (en) 2004-04-02

Family

ID=24197671

Family Applications (1)

Application Number Title Priority Date Filing Date
HK04100228A HK1057438A1 (en) 2000-04-17 2004-01-13 Direct digital synthesis in a qam demodulator qam.

Country Status (11)

Country Link
US (1) US6249179B1 (no)
EP (1) EP1299979A1 (no)
JP (1) JP2004522363A (no)
KR (1) KR20030043787A (no)
CN (1) CN1190052C (no)
CA (1) CA2416960A1 (no)
HK (1) HK1057438A1 (no)
MY (1) MY134001A (no)
NO (1) NO20024936D0 (no)
TW (1) TWI233723B (no)
WO (1) WO2002103976A1 (no)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6160443A (en) * 1999-09-08 2000-12-12 Atmel Corporation Dual automatic gain control in a QAM demodulator
US7068731B1 (en) * 2000-10-24 2006-06-27 Agere Systems, Inc. Apparatus and method for multi-channel receiver
KR100441196B1 (ko) * 2002-01-14 2004-07-21 기가텔레콤 (주) 연속 위상 직교 진폭 변조 및 복조 장치
SE0201159L (sv) * 2002-04-16 2003-07-01 Spirea Ab Kvadraturfasstyrslinga
US7447493B2 (en) * 2003-02-28 2008-11-04 Silicon Laboratories, Inc. Tuner suitable for integration and method for tuning a radio frequency signal
EP1611688A4 (en) * 2003-02-28 2006-05-31 Silicon Lab Inc ACCORDING CIRCUIT FOR HIGH FREQUENCY RECEIVERS AND CORRESPONDING METHOD
US7358885B2 (en) 2003-02-28 2008-04-15 Silicon Laboratories, Inc. Mixing DAC architectures for a radio frequency receiver
US7425995B2 (en) * 2003-02-28 2008-09-16 Silicon Laboratories, Inc. Tuner using a direct digital frequency synthesizer, television receiver using such a tuner, and method therefor
US7676210B2 (en) * 2003-09-29 2010-03-09 Tod Paulus Method for performing dual mode image rejection calibration in a receiver
US7212593B2 (en) * 2003-10-14 2007-05-01 Telefonaktiebolaget Lm Ericsson (Publ) Method of and apparatus for noise whitening filtering
US7289583B2 (en) * 2003-10-14 2007-10-30 Telefonktiebolagel Lm Ericsson (Publ) Method of and apparatus for single antenna interference rejection through relaxation
US7856224B2 (en) * 2005-03-31 2010-12-21 General Electric Company Systems and methods for recovering a signal of interest from a complex signal
NL1031482C2 (nl) * 2006-03-31 2007-10-05 Stn B V Kabeltelevisiesysteem met uitgebreide kwadratuuramplitudemodulatiesignaaluitwisseling, zendmiddelen en een beheercentrum daarvoor.
US7773968B2 (en) * 2006-11-30 2010-08-10 Silicon Laboratories, Inc. Interface/synchronization circuits for radio frequency receivers with mixing DAC architectures
US20080181337A1 (en) * 2007-01-31 2008-07-31 Silicon Laboratories, Inc. Spur and Distortion Management Techniques for an RF Receiver
US7599676B2 (en) * 2007-01-31 2009-10-06 Silicon Laboratories, Inc. Power consumption reduction techniques for an RF receiver implementing a mixing DAC architecture
US20080181340A1 (en) * 2007-01-31 2008-07-31 Silicon Laboratories, Inc. Spur Rejection Techniques for an RF Receiver
US20080180579A1 (en) * 2007-01-31 2008-07-31 Silicon Laboratories, Inc. Techniques for Improving Harmonic and Image Rejection Performance of an RF Receiver Mixing DAC
KR100841401B1 (ko) 2007-12-26 2008-06-26 주식회사 이디 Ａｍ,ｆｍ,ｆｍ 스테레오 통합 변조 장치 및 방법
TWI353776B (en) * 2008-05-26 2011-12-01 Novatek Microelectronics Corp Signal adjusting circuit
JP2011199554A (ja) * 2010-03-19 2011-10-06 Panasonic Corp 複素信号処理回路、受信回路、信号再生装置
CN102098267B (zh) * 2011-01-24 2014-06-25 中国科学院半导体研究所 高速超低功耗16qam发射装置
WO2014176719A1 (zh) * 2013-04-28 2014-11-06 华为技术有限公司 一种载波同步的方法和设备
RU2761521C1 (ru) * 2021-05-21 2021-12-09 федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский университет "МЭИ" (ФГБОУ ВО "НИУ "МЭИ") Цифровой некогерентный демодулятор сигналов с амплитудно-четырехпозиционной фазовой манипуляцией

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5315619A (en) 1992-05-15 1994-05-24 Rca Thomson Licensing Corporation Carrier recovery processor for a QAM television signal
JP3268138B2 (ja) * 1994-09-29 2002-03-25 三菱電機株式会社 通信装置、周波数シンセサイザ及びシンセサイズ方法
US6249180B1 (en) * 1999-09-08 2001-06-19 Atmel Corporation Phase noise and additive noise estimation in a QAM demodulator
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
WO2002103976A8 (en) 2003-02-20
CA2416960A1 (en) 2002-12-27
CN1459178A (zh) 2003-11-26
MY134001A (en) 2007-11-30
NO20024936D0 (no) 2002-10-14
KR20030043787A (ko) 2003-06-02
JP2004522363A (ja) 2004-07-22
EP1299979A1 (en) 2003-04-09
US6249179B1 (en) 2001-06-19
TWI233723B (en) 2005-06-01
WO2002103976A1 (en) 2002-12-27
CN1190052C (zh) 2005-02-16

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20110212