IT1273963B - Metodo e circuiti di equalizzazione a spaziatura frazionata - Google Patents

Metodo e circuiti di equalizzazione a spaziatura frazionata

Info

Publication number: IT1273963B
Authority: IT; Italy
Prior art keywords: circuits; equalization method; fractional spacing; spacing equalization; fractional
Prior art date: 1995-02-24

Application number

ITMI950355A

Other languages

English (en)

Inventor

Franco Guglielmi

Carlo Luschi

Arnaldo Spalvieri

Original Assignee

Alcatel Italia

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.)

1995-02-24

Filing date

1995-02-24

Publication date

1997-07-11

1995-02-24 Application filed by Alcatel Italia filed Critical Alcatel Italia

1995-02-24 Publication of ITMI950355A0 publication Critical patent/ITMI950355A0/it

1995-02-24 Priority to ITMI950355A priority Critical patent/IT1273963B/it

1996-01-18 Priority to US08/588,348 priority patent/US5751768A/en

1996-02-14 Priority to NO960575A priority patent/NO960575L/no

1996-02-15 Priority to CN96102028A priority patent/CN1078983C/zh

1996-02-22 Priority to BR9600786A priority patent/BR9600786A/pt

1996-02-23 Priority to EP96102710A priority patent/EP0729254B1/en

1996-02-23 Priority to DE69625397T priority patent/DE69625397T2/de

1996-02-23 Priority to CA002170195A priority patent/CA2170195A1/en

1996-02-26 Priority to JP8038483A priority patent/JPH08321795A/ja

1996-08-24 Publication of ITMI950355A1 publication Critical patent/ITMI950355A1/it

1997-07-11 Application granted granted Critical

1997-07-11 Publication of IT1273963B publication Critical patent/IT1273963B/it

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
- H04L25/03044—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure using fractionally spaced delay lines or combinations of fractionally integrally spaced taps
- 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
- H04L2025/03509—Tapped delay lines fractionally spaced
- 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

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Filters That Use Time-Delay Elements (AREA)

ITMI950355A 1995-02-24 1995-02-24 Metodo e circuiti di equalizzazione a spaziatura frazionata IT1273963B (it)

Priority Applications (9)

Application Number	Priority Date	Filing Date	Title
ITMI950355A IT1273963B (it)	1995-02-24	1995-02-24	Metodo e circuiti di equalizzazione a spaziatura frazionata
US08/588,348 US5751768A (en)	1995-02-24	1996-01-18	Fractionally spaced equalizing circuits and method
NO960575A NO960575L (no)	1995-02-24	1996-02-14	Fremgangsmåte og kretser for fraksjonsadskilt utjevning
CN96102028A CN1078983C (zh)	1995-02-24	1996-02-15	分步间隔均衡电路及方法
BR9600786A BR9600786A (pt)	1995-02-24	1996-02-22	Circuitos e processo de equalização fracionalmente espaçada
EP96102710A EP0729254B1 (en)	1995-02-24	1996-02-23	Fractionally spaced equalizing circuits and method
DE69625397T DE69625397T2 (de)	1995-02-24	1996-02-23	Verfahren und Schaltungen zur Entzerrung mittels fraktionierter Abstände
CA002170195A CA2170195A1 (en)	1995-02-24	1996-02-23	Fractionally spaced equalizing circuits and method
JP8038483A JPH08321795A (ja)	1995-02-24	1996-02-26	分数間隔の等化回路および等化方法

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
ITMI950355A IT1273963B (it)	1995-02-24	1995-02-24	Metodo e circuiti di equalizzazione a spaziatura frazionata

Publications (3)

Publication Number	Publication Date
ITMI950355A0 ITMI950355A0 (it)	1995-02-24
ITMI950355A1 ITMI950355A1 (it)	1996-08-24
IT1273963B true IT1273963B (it)	1997-07-11

Family

ID=11370680

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ITMI950355A IT1273963B (it)	1995-02-24	1995-02-24	Metodo e circuiti di equalizzazione a spaziatura frazionata

Country Status (9)

Country	Link
US (1)	US5751768A (it)
EP (1)	EP0729254B1 (it)
JP (1)	JPH08321795A (it)
CN (1)	CN1078983C (it)
BR (1)	BR9600786A (it)
CA (1)	CA2170195A1 (it)
DE (1)	DE69625397T2 (it)
IT (1)	IT1273963B (it)
NO (1)	NO960575L (it)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH09294095A (ja) *	1996-04-26	1997-11-11	Oki Electric Ind Co Ltd	適応等化器
US6952444B1 (en)	1996-07-19	2005-10-04	Texas Instruments Incorporated	Blind DFE and phase correction
WO1998004073A2 (en) *	1996-07-19	1998-01-29	Libit Signal Processing Limited	Blind dfe and phase correction
US7190720B2 (en) *	2001-07-03	2007-03-13	Zenith Electronics Corporation	Tap weight initializer for an adaptive equalizer
CA2206661C (en) *	1997-05-29	2004-07-20	Telecommunications Research Laboratories	A duplex decision feedback equalization system
US6868157B1 (en)	1997-09-16	2005-03-15	Sanyo Electric Co., Ltd.	Echo canceling method, echo canceller and voice switch
IT1294878B1 (it)	1997-09-19	1999-04-23	Alsthom Cge Alcatel	Metodo per la stabilizzazione del funzionamento di equalizzatori a spaziatura frazionata e relativo sistema di implementazione.
EP0939525B1 (en) *	1998-02-26	2009-10-07	Italtel s.p.a.	Sequence estimation for CPM signals
JP2000032069A (ja) *	1998-07-08	2000-01-28	Nec Corp	パケット構成方法及びパケット受信器
EP1018816A1 (en) *	1998-10-19	2000-07-12	Lucent Technologies Inc.	Accumulative ARQ method and system
US6442198B1 (en)	1998-10-30	2002-08-27	Agere Systems Guardian Corp.	Method and apparatus for stabilizing a decision feedback equalizer
EP1032170B1 (en) *	1999-02-23	2005-01-12	Lucent Technologies Inc.	Process and apparatus for receiving signals transmitted over a distorted channel
US6590932B1 (en) *	1999-11-24	2003-07-08	Ericsson Inc.	Methods, receiver devices and systems for whitening a signal disturbance in a communication signal
US6862326B1 (en)	2001-02-20	2005-03-01	Comsys Communication & Signal Processing Ltd.	Whitening matched filter for use in a communications receiver
US20060240795A1 (en) *	2002-07-17	2006-10-26	Shousheng He	Noise whitening
US7830956B2 (en) *	2003-02-05	2010-11-09	Fujitsu Limited	Method and system for processing a sampled signal
US20040161057A1 (en) *	2003-02-18	2004-08-19	Malladi Durga Prasad	Communication receiver with a rake-based adaptive equalizer
US7272176B2 (en) *	2003-02-18	2007-09-18	Qualcomm Incorporated	Communication receiver with an adaptive equalizer
US7257377B2 (en)	2003-02-18	2007-08-14	Qualcomm, Incorporated	Systems and methods for improving channel estimation
US7711035B2 (en) *	2004-09-17	2010-05-04	Telefonaktiebolaget Lm Ericsson (Publ)	Method and apparatus for suppressing communication signal interference
US7394608B2 (en) *	2005-08-26	2008-07-01	International Business Machines Corporation	Read channel apparatus for asynchronous sampling and synchronous equalization
US7596176B2 (en) *	2005-10-31	2009-09-29	International Business Machines Corporation	Apparatus, system, and method for adaptive asynchronous equalization using leakage
US8160189B2 (en)	2007-01-26	2012-04-17	Raytheon Company	Method and system for communication channel characterization
US8743946B2 (en) *	2011-09-08	2014-06-03	Texas Instruments Incorporated	Frequency-domain equalization and combining for single carrier transmission
US8971447B1 (en)	2013-10-17	2015-03-03	Fujitsu Limited	Variable delay of data signals

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4376308A (en) *	1981-04-01	1983-03-08	Bell Telephone Laboratories, Incorporated	Control of coefficient drift for fractionally spaced equalizers
US4550415A (en) *	1983-11-16	1985-10-29	At&T Bell Laboratories	Fractionally spaced equalization using nyquist-rate coefficient updating
US4852036A (en) *	1987-01-07	1989-07-25	Oki Electric Industry Co., Ltd.	Adaptive digital filter and an echo canceler incorporating the same
US5031195A (en) *	1989-06-05	1991-07-09	International Business Machines Corporation	Fully adaptive modem receiver using whitening matched filtering
EP0413875B1 (en) *	1989-08-21	1994-06-01	International Business Machines Corporation	Timing control for modem receivers
US5095497A (en) *	1989-10-02	1992-03-10	At & T Bell Laboratories	Technique for achieving the full coding gain of encoded digital signals
US5267266A (en) *	1992-05-11	1993-11-30	Bell Communications Research, Inc.	Fast converging adaptive equalizer using pilot adaptive filters
US5309484A (en) *	1992-09-01	1994-05-03	Motorola, Inc.	Method and apparatus for asynchronous timing recovery using interpolation filter
US5481565A (en) *	1993-10-18	1996-01-02	At&T Corp.	Method and apparatus for channel equalization
US5414733A (en) *	1993-12-20	1995-05-09	Adtran	Decision feedback equalizer employing fixed ratio postcursor taps for minimizing noise and intersymbol interference in signals conveyed over high speed data service loop

1995
- 1995-02-24 IT ITMI950355A patent/IT1273963B/it active IP Right Grant
1996
- 1996-01-18 US US08/588,348 patent/US5751768A/en not_active Expired - Lifetime
- 1996-02-14 NO NO960575A patent/NO960575L/no not_active Application Discontinuation
- 1996-02-15 CN CN96102028A patent/CN1078983C/zh not_active Expired - Fee Related
- 1996-02-22 BR BR9600786A patent/BR9600786A/pt active Search and Examination
- 1996-02-23 CA CA002170195A patent/CA2170195A1/en not_active Abandoned
- 1996-02-23 EP EP96102710A patent/EP0729254B1/en not_active Expired - Lifetime
- 1996-02-23 DE DE69625397T patent/DE69625397T2/de not_active Expired - Lifetime
- 1996-02-26 JP JP8038483A patent/JPH08321795A/ja active Pending

Also Published As

Publication number	Publication date
EP0729254B1 (en)	2002-12-18
BR9600786A (pt)	1997-12-23
NO960575L (no)	1996-08-26
CN1078983C (zh)	2002-02-06
NO960575D0 (no)	1996-02-14
ITMI950355A0 (it)	1995-02-24
EP0729254A2 (en)	1996-08-28
EP0729254A3 (en)	2000-07-05
JPH08321795A (ja)	1996-12-03
DE69625397T2 (de)	2003-10-09
CA2170195A1 (en)	1996-08-25
CN1138251A (zh)	1996-12-18
DE69625397D1 (de)	2003-01-30
US5751768A (en)	1998-05-12
ITMI950355A1 (it)	1996-08-24

Publication	Publication Date	Title
IT1273963B (it)	1997-07-11	Metodo e circuiti di equalizzazione a spaziatura frazionata
KR960012337A (ko)	1996-04-20	에칭방법
FI956135A0 (fi)	1995-12-20	Erotusmenetelmä
DE69432015D1 (de)	2003-02-20	Verfahren
DE69623479D1 (de)	2002-10-10	Fernmeldeanordnung und -verfahren
DE69633638D1 (de)	2004-11-18	Flussmittelfreiverfahren
DE69532093D1 (de)	2003-12-11	Stromdetektorschaltungen
NO921218D0 (no)	1992-03-27	Reseptor-rensemetode
FI971884A0 (fi)	1997-05-02	Tietoliikennemenetelmä ja -järjestely
DE69707677D1 (de)	2001-11-29	Verzögerungsschaltung und -verfahren
DE69227759D1 (de)	1999-01-14	Mehrfachteilungsegmentierungsverfahren
DE69626166D1 (de)	2003-03-20	Oszillatorschaltung und -verfahren
DE69808362D1 (de)	2002-11-07	Multiplizierverfahren und Multiplizierschaltung
DE69603772D1 (de)	1999-09-23	Entmagnetisierungsschaltung
FI933682A0 (fi)	1993-08-20	Metod foer att producera transgena saedesvaexter
NO914430L (no)	1992-05-14	Metallkatode og fremgangsmaate for restaurering av metallkatode
DE69530387D1 (de)	2003-05-22	Detektorschaltung
DE59502113D1 (de)	1998-06-10	Selbstprogrammierende schaltungsanordnung
DE69517718D1 (de)	2000-08-10	Datenreorganisationsschaltung und Verfahren
DE69611768D1 (de)	2001-03-22	Multiplizierschaltung
DE69525256D1 (de)	2002-03-14	Gleichrichtschaltung
ITMI940146A0 (it)	1994-01-28	Apparecchiatura e metodo per rilevare perforazioni
KR970006692A (ko)	1997-02-21	케이슨 제작장치와 그 제작공법
DE69516624D1 (de)	2000-06-08	Multiplikationsschaltung
ITTO941040A0 (it)	1994-12-20	Apparecchiatura selezionatrice di gettoni.

Legal Events

Date	Code	Title	Description
1997-07-11	0001	Granted
1999-10-27	TA	Fee payment date (situation as of event date), data collected since 19931001	Effective date: 19990129