ATE313197T1 - Verfahren und anordnung zum schnellen synchronisieren eines punkt-zu-multipunkt- kommunikationssystems - Google Patents

Verfahren und anordnung zum schnellen synchronisieren eines punkt-zu-multipunkt- kommunikationssystems

Info

Publication number
ATE313197T1
ATE313197T1 AT99119033T AT99119033T ATE313197T1 AT E313197 T1 ATE313197 T1 AT E313197T1 AT 99119033 T AT99119033 T AT 99119033T AT 99119033 T AT99119033 T AT 99119033T AT E313197 T1 ATE313197 T1 AT E313197T1
Authority
AT
Austria
Prior art keywords
point
modem
carrier frequency
processing
arrangement
Prior art date
Application number
AT99119033T
Other languages
English (en)
Inventor
Michael Joshua Genossar
Natan Mizrahi
Max Gotman
Naftali Chayat
Original Assignee
Alvarion Ltd
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 Alvarion Ltd filed Critical Alvarion Ltd
Application granted granted Critical
Publication of ATE313197T1 publication Critical patent/ATE313197T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • 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
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03477—Tapped delay lines not time-recursive
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H04L2025/03617—Time recursive algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H04L2025/03656—Initialisation
    • H04L2025/03668—Initialisation to the value at the end of a previous adaptation period
    • 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
    • H04L2027/0028—Correction of carrier offset at passband only
    • 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
    • H04L2027/0046—Open 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
    • H04L2027/0063—Elements of loops
    • H04L2027/0067—Phase error detectors
    • 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
    • H04L2027/0063—Elements of loops
    • H04L2027/0069—Loop filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Small-Scale Networks (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Facsimile Transmission Control (AREA)
AT99119033T 1998-09-30 1999-09-29 Verfahren und anordnung zum schnellen synchronisieren eines punkt-zu-multipunkt- kommunikationssystems ATE313197T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/162,995 US6643321B1 (en) 1998-09-30 1998-09-30 Method for rapid synchronization of a point to multipoint communication system

Publications (1)

Publication Number Publication Date
ATE313197T1 true ATE313197T1 (de) 2005-12-15

Family

ID=22587999

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99119033T ATE313197T1 (de) 1998-09-30 1999-09-29 Verfahren und anordnung zum schnellen synchronisieren eines punkt-zu-multipunkt- kommunikationssystems

Country Status (5)

Country Link
US (1) US6643321B1 (de)
EP (1) EP0996261B1 (de)
AT (1) ATE313197T1 (de)
DE (1) DE69928894T2 (de)
IL (1) IL131952A (de)

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CN1258140A (zh) * 1998-07-24 2000-06-28 休斯电子公司 多传送模式无线电通信
US6363129B1 (en) * 1998-11-09 2002-03-26 Broadcom Corporation Timing recovery system for a multi-pair gigabit transceiver
CN1149734C (zh) * 1998-10-22 2004-05-12 因芬尼昂技术股份公司 稳频的发射/接收电路装置
US6834057B1 (en) * 1999-02-12 2004-12-21 Broadcom Corporation Cable modem system with sample and packet synchronization
USRE40791E1 (en) * 1999-06-15 2009-06-23 Siemens Aktiengesellschaft Method and system for verifying the authenticity of a first communication participants in a communications network
JP2001168748A (ja) * 1999-12-14 2001-06-22 Matsushita Electric Ind Co Ltd デジタル信号受信装置
GB0002735D0 (en) * 2000-02-08 2000-03-29 Koninkl Philips Electronics Nv Radio communication system
US6856648B1 (en) * 2000-07-17 2005-02-15 Telefonaktiebolaget Lm Ericsson Method and apparatus for equalizer updating and sampling rate control
US20020086707A1 (en) * 2000-11-15 2002-07-04 Struhsaker Paul F. Wireless communication system using block filtering and fast equalization-demodulation and method of operation
US7173916B2 (en) 2001-01-19 2007-02-06 Raze Technologies, Inc. Wireless access system using multiple modulation formats in TDD frames and method of operation
US7230931B2 (en) 2001-01-19 2007-06-12 Raze Technologies, Inc. Wireless access system using selectively adaptable beam forming in TDD frames and method of operation
US6901120B2 (en) * 2000-12-06 2005-05-31 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for iterative parameter estimation
US6628707B2 (en) * 2001-05-04 2003-09-30 Radiant Networks Plc Adaptive equalizer system for short burst modems and link hopping radio networks
GB0126130D0 (en) * 2001-10-31 2002-01-02 Nokia Corp Frequency error estimation
KR100435494B1 (ko) * 2001-11-21 2004-06-09 한국전자통신연구원 디지털 통신에서의 동기 수행 시스템 및 그 방법
KR100466589B1 (ko) * 2002-02-18 2005-01-24 한국전자통신연구원 디지털 심볼 동기 장치 및 그 방법
GB0405623D0 (en) 2004-03-12 2004-04-21 British Telecomm Controlling transactions
US7263335B2 (en) 2004-07-19 2007-08-28 Purewave Networks, Inc. Multi-connection, non-simultaneous frequency diversity in radio communication systems
US7460839B2 (en) 2004-07-19 2008-12-02 Purewave Networks, Inc. Non-simultaneous frequency diversity in radio communication systems
KR100613602B1 (ko) * 2005-02-07 2006-08-21 삼성전자주식회사 Ｖｓｂ 수신기에 적용되는 심벌 타이밍 복원 장치 및 그방법
US7978650B2 (en) * 2005-10-19 2011-07-12 Samsung Electronics Co., Ltd Apparatus and method for supporting multicast/broadcast service in broadband wireless access system
US7831004B2 (en) * 2006-06-13 2010-11-09 Panasonic Corporation Synchronous detecting circuit
JP5665770B2 (ja) * 2010-01-19 2015-02-04 三菱電機株式会社 信号生成装置および信号生成方法
US9985808B2 (en) * 2016-07-07 2018-05-29 Qualcomm Incorporated Methods and apparatus for managing interference across operators
CN108667521B (zh) * 2017-03-27 2020-12-29 深圳市中兴微电子技术有限公司 一种光传输系统自适应均衡的方法及装置
CN111511014A (zh) * 2020-04-23 2020-08-07 四川星网云联科技有限公司 基于超宽带技术的自适应无线同步方法

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GB2212699B (en) 1987-11-16 1992-01-08 Ncr Co Multipoint data modem communication system
GB8800739D0 (en) 1988-01-13 1988-02-10 Ncr Co Multipoint modem system having fast synchronization
US5245611A (en) * 1991-05-31 1993-09-14 Motorola, Inc. Method and apparatus for providing carrier frequency offset compensation in a tdma communication system
CA2110881C (en) * 1992-12-09 1998-07-28 Kyo Takahashi Adaptive equalizer capable of compensating for carrier frequency offset
GB9509405D0 (en) * 1995-05-10 1995-07-05 Ionica Int Ltd Demodulator
US5793821A (en) * 1995-06-07 1998-08-11 3Com Corporation Timing Recovery using group delay compensation
US6088368A (en) * 1997-05-30 2000-07-11 3Com Ltd. Ethernet transport facility over digital subscriber lines

Also Published As

Publication number Publication date
DE69928894D1 (de) 2006-01-19
DE69928894T2 (de) 2006-08-24
US6643321B1 (en) 2003-11-04
IL131952A (en) 2004-01-04
EP0996261B1 (de) 2005-12-14
IL131952A0 (en) 2001-03-19
EP0996261A3 (de) 2002-03-13
EP0996261A2 (de) 2000-04-26

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