IL131952A - Method for rapid synchronization of a point to multipoint communication system - Google Patents

Method for rapid synchronization of a point to multipoint communication system

Info

Publication number: IL131952A
Authority: IL; Israel
Prior art keywords: signal; burst; phase; base station; digital
Prior art date: 1998-09-30

Application number

IL13195299A

Other languages

English (en)

Other versions

IL131952A0 (en

Original Assignee

Floware System Solutions 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.)

1998-09-30

Filing date

1999-09-16

Publication date

2004-01-04

1999-09-16 Application filed by Floware System Solutions Ltd filed Critical Floware System Solutions Ltd

2001-03-19 Publication of IL131952A0 publication Critical patent/IL131952A0/xx

2004-01-04 Publication of IL131952A publication Critical patent/IL131952A/en

Links

238000000034 method Methods 0.000 title claims abstract description 70
238000004891 communication Methods 0.000 title claims description 23
238000012545 processing Methods 0.000 claims abstract description 93
230000005540 biological transmission Effects 0.000 claims description 56
230000010363 phase shift Effects 0.000 claims description 28
238000005070 sampling Methods 0.000 claims description 20
238000011084 recovery Methods 0.000 claims description 14
238000001914 filtration Methods 0.000 claims description 4
230000008569 process Effects 0.000 abstract description 17
230000003044 adaptive effect Effects 0.000 abstract description 7
239000013598 vector Substances 0.000 description 11
238000011144 upstream manufacturing Methods 0.000 description 8
230000004044 response Effects 0.000 description 7
238000012549 training Methods 0.000 description 7
230000008901 benefit Effects 0.000 description 6
230000008859 change Effects 0.000 description 5
238000005562 fading Methods 0.000 description 5
230000006978 adaptation Effects 0.000 description 4
238000013459 approach Methods 0.000 description 4
238000004364 calculation method Methods 0.000 description 4
238000010586 diagram Methods 0.000 description 4
238000012937 correction Methods 0.000 description 3
239000006185 dispersion Substances 0.000 description 3
230000006870 function Effects 0.000 description 3
238000006243 chemical reaction Methods 0.000 description 2
239000013078 crystal Substances 0.000 description 2
230000004075 alteration Effects 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
230000003111 delayed effect Effects 0.000 description 1
238000013461 design Methods 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000007493 shaping process Methods 0.000 description 1
230000008054 signal transmission Effects 0.000 description 1
238000001228 spectrum Methods 0.000 description 1

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)

IL13195299A 1998-09-30 1999-09-16 Method for rapid synchronization of a point to multipoint communication system IL131952A (en)

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 (2)

Publication Number	Publication Date
IL131952A0 IL131952A0 (en)	2001-03-19
IL131952A true IL131952A (en)	2004-01-04

Family

ID=22587999

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IL13195299A IL131952A (en)	1998-09-30	1999-09-16	Method for rapid synchronization of a point to multipoint communication system

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)

Families Citing this family (26)

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Publication number	Priority date	Publication date	Assignee	Title
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
JP3924465B2 (ja) *	1999-06-15	2007-06-06	シーメンスアクチエンゲゼルシヤフト	通信ネットワークにおける第１通信関与体の正当性をチェックする方法および装置
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
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
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
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
US7460839B2 (en)	2004-07-19	2008-12-02	Purewave Networks, Inc.	Non-simultaneous frequency diversity in radio communication systems
US7263335B2 (en)	2004-07-19	2007-08-28	Purewave Networks, Inc.	Multi-connection, 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
US20120313671A1 (en) *	2010-01-19	2012-12-13	Mitsubishi Electric Corporation	Signal generation device and signal generation method
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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
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

1998
- 1998-09-30 US US09/162,995 patent/US6643321B1/en not_active Expired - Lifetime
1999
- 1999-09-16 IL IL13195299A patent/IL131952A/en not_active IP Right Cessation
- 1999-09-29 EP EP99119033A patent/EP0996261B1/de not_active Expired - Lifetime
- 1999-09-29 AT AT99119033T patent/ATE313197T1/de not_active IP Right Cessation
- 1999-09-29 DE DE69928894T patent/DE69928894T2/de not_active Expired - Lifetime

Also Published As

Publication number	Publication date
DE69928894T2 (de)	2006-08-24
IL131952A0 (en)	2001-03-19
ATE313197T1 (de)	2005-12-15
EP0996261B1 (de)	2005-12-14
EP0996261A3 (de)	2002-03-13
EP0996261A2 (de)	2000-04-26
DE69928894D1 (de)	2006-01-19
US6643321B1 (en)	2003-11-04

Legal Events

Date	Code	Title
2004-06-01	FF	Patent granted
2006-01-15	KB	Patent renewed
2013-08-29	KB	Patent renewed
2018-04-30	MM9K	Patent not in force due to non-payment of renewal fees

Publication	Publication Date	Title
EP0996261B1 (de)	2005-12-14	Verfahren und Anordnung zum schnellen Synchronisieren eines Punkt-zu-Multipunkt-Kommunikationssystems
US5285482A (en)	1994-02-08	Timing recovery device for receiver installation using adaptive equalization and oversampling associated with differentially coherent demodulation
EP0793363B1 (de)	2008-08-06	Taktrückgewinnungssystem für einen digitalen Signalprozessor
EP1364479B1 (de)	2010-04-28	Satellitenempfänger und entsprechendes verfahren
US5793818A (en)	1998-08-11	Signal processing system
US6985549B1 (en)	2006-01-10	Blind cost criterion timing recovery
JP3866375B2 (ja)	2007-01-10	ディジタル・ビデオ信号処理システムにおけるマルチモード・イコライザ
US6067319A (en)	2000-05-23	Method for equalization of a quadrature amplitude modulated signal
KR100802973B1 (ko)	2008-02-14	반송파 주파수 오프셋의 보상을 위한 방법 및 시스템
CN111343125B (zh)	2023-05-30	32apsk调制体制接收机同步方法
US20050207519A1 (en)	2005-09-22	Digital radio receiver
US20120121006A1 (en)	2012-05-17	Equalizer Architecture for Data Communication
CN102546484A (zh)	2012-07-04	基于信标帧的信道训练方法和接收机装置
US20040228397A1 (en)	2004-11-18	Method and apparatus for implementation of a zero forcing equalizer
US20150333936A1 (en)	2015-11-19	Communication apparatus and method for high efficiency satellite service
KR100255726B1 (ko)	2000-05-01	자동 주파수 제어방법 및 장치
CN117040996B (zh)	2024-02-13	并行传输下iq延迟对齐与定时同步联合实现方法和系统
WO2004010624A1 (en)	2004-01-29	Ofdm receiver
GB2375272A (en)	2002-11-06	A frequency estimator
EP0793365A2 (de)	1997-09-03	Filter in einem digitalen Taktrückgewinnungssystem
JPH11504178A (ja)	1999-04-06	Ｔｄｍ／ｔｄｍａ受信機におけるキャリヤ位相再生
US7359467B2 (en)	2008-04-15	Method and apparatus for increasing the quality of the receiver synchronization of QAM or CAP modulated modem connection
KR0134280B1 (ko)	1998-04-27	펄스진폭변조된 신호를 위한 디지탈 통신 수신기
JP3623185B2 (ja)	2005-02-23	受信データ復調機
KR100231782B1 (ko)	1999-11-15	자기 적응 등화와 반송파 위상 복원을 겸한등화 방법