BR0307433A - Método para equalização e demodulação de um sinal transmitido via um canal tempo-variante - Google Patents

Método para equalização e demodulação de um sinal transmitido via um canal tempo-variante

Info

Publication number
BR0307433A
BR0307433A BR0307433-1A BR0307433A BR0307433A BR 0307433 A BR0307433 A BR 0307433A BR 0307433 A BR0307433 A BR 0307433A BR 0307433 A BR0307433 A BR 0307433A
Authority
BR
Brazil
Prior art keywords
time
demodulating
equalizing
signal transmitted
transmitted via
Prior art date
Application number
BR0307433-1A
Other languages
English (en)
Inventor
Rainer Bott
Ulrich Sorger
Snjezana Gligorevic
Original Assignee
Rohde & Schwarz
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 Rohde & Schwarz filed Critical Rohde & Schwarz
Publication of BR0307433A publication Critical patent/BR0307433A/pt

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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/03292—Arrangements for operating in conjunction with other apparatus with channel estimation circuitry
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers
    • 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
    • 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
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • 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
    • 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
    • H04L2025/03522—Frequency domain
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/024—Channel estimation channel estimation 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/03286—Arrangements for operating in conjunction with other apparatus with channel-decoding circuitry

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Communication Control (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Error Detection And Correction (AREA)

Abstract

"MéTODO PARA EQUALIZAçãO E DEMODULAçãO DE UM SINAL TRANSMITIDO VIA UM CANAL TEMPO-VARIANTE". De acordo com a invenção, visando equalizar e demodular um sinal de dados transmitido a um receptor via um canal tempo-variante, são calculados os coeficientes de distorção (amortecimento (damping) , retardo e freq³ência Doppler), que causam as distorções de sinal no canal, a partir do sinal de dados recebido no receptor. Desta forma, o sinal de dados é equalizado e então demodulado.
BR0307433-1A 2002-06-24 2003-05-14 Método para equalização e demodulação de um sinal transmitido via um canal tempo-variante BR0307433A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10228159A DE10228159A1 (de) 2002-06-24 2002-06-24 Verfahren zur Entzerrung und Demodulation eines über einen zeitveränderlichen Kanal übertragenen Datensignals
PCT/EP2003/005068 WO2004002099A1 (de) 2002-06-24 2003-05-14 Verfahren zur entzerrung und demodulation eines über einen zeitveränderlichen kanal übertragenen datensignals

Publications (1)

Publication Number Publication Date
BR0307433A true BR0307433A (pt) 2004-12-28

Family

ID=29761352

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0307433-1A BR0307433A (pt) 2002-06-24 2003-05-14 Método para equalização e demodulação de um sinal transmitido via um canal tempo-variante

Country Status (17)

Country Link
US (1) US20050220231A1 (pt)
EP (1) EP1516470B1 (pt)
KR (1) KR20050007432A (pt)
CN (1) CN1663212A (pt)
AT (1) ATE306166T1 (pt)
AU (1) AU2003232774B2 (pt)
BR (1) BR0307433A (pt)
CA (1) CA2474559A1 (pt)
DE (2) DE10228159A1 (pt)
DK (1) DK1516470T3 (pt)
ES (1) ES2249733T3 (pt)
HU (1) HU225835B1 (pt)
IL (1) IL165903A0 (pt)
MX (1) MXPA04010997A (pt)
NO (1) NO20050321L (pt)
WO (1) WO2004002099A1 (pt)
ZA (1) ZA200404576B (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7596191B2 (en) * 2005-12-08 2009-09-29 Nokia Corporation Apparatus, method and computer program product providing a computationally efficient maximum likelihood joint synchronization and channel estimation algorithm
DE102006029464A1 (de) * 2005-12-23 2007-06-28 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Entzerrer zur Detektion von über einen zeitveränderlichen Übertragungskanal übertragenen Datensymbol-Sequenzen aus einem diese enthaltenden Empfangssignal
DE102006014064A1 (de) * 2005-12-23 2007-06-28 Rohde & Schwarz Gmbh & Co. Kg Verfahren und Entzerrer zur Entzerrung einer über einen zeitveränderlichen Übertragungskanal empfangenen Datensymbol-Sequenz
CN105548711B (zh) * 2015-12-08 2018-06-12 北京航空航天大学 一种多频信息滤波递推解调方法
CN109274423B (zh) * 2018-10-22 2020-03-17 南京邮电大学 一种移动性可见光通信信道均衡方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997841A (en) * 1974-10-08 1976-12-14 International Standard Electric Corporation Time domain equalizer for broadband communication systems
US4959656A (en) * 1989-10-31 1990-09-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Efficient detection and signal parameter estimation with application to high dynamic GPS receiver
US5859874A (en) * 1994-05-09 1999-01-12 Globalstar L.P. Multipath communication system optimizer
US5729558A (en) * 1995-03-08 1998-03-17 Lucent Technologies Inc. Method of compensating for Doppler error in a wireless communications system, such as for GSM and IS54
US6134277A (en) * 1997-09-04 2000-10-17 Ericsson Inc System and method for self-adaptive maximum likelihood sequence detection
US6411649B1 (en) * 1998-10-20 2002-06-25 Ericsson Inc. Adaptive channel tracking using pilot sequences
WO2000031937A1 (de) * 1998-11-24 2000-06-02 Infineon Technologies Ag Verfahren zur kompensation von störungen bei einem mit diskreter multiton-modulation erzeugten signal und schaltungsanordnung zur durchführung des verfahrens
US6320919B1 (en) * 1998-11-30 2001-11-20 Ericsson Inc. Adaptive channel characterization using decoded symbols
FR2787199B1 (fr) * 1998-12-11 2001-03-09 Thomson Csf Procede de detection, notamment de petites cibles marines
US6757339B1 (en) * 2000-07-24 2004-06-29 Nortel Networks Limited Minimum mean-squared error block-decision feedback sequence estimation in digital communication systems
US6983125B2 (en) * 2001-09-25 2006-01-03 Qualcomm Incorporated Method and apparatus for varying the length of an adaptive equalizer based on doppler frequency

Also Published As

Publication number Publication date
EP1516470A1 (de) 2005-03-23
US20050220231A1 (en) 2005-10-06
ZA200404576B (en) 2005-06-09
AU2003232774A1 (en) 2004-01-06
ATE306166T1 (de) 2005-10-15
EP1516470B1 (de) 2005-10-05
CN1663212A (zh) 2005-08-31
AU2003232774B2 (en) 2007-05-10
NO20050321L (no) 2005-01-20
IL165903A0 (en) 2006-01-15
DK1516470T3 (da) 2006-02-20
DE50301325D1 (de) 2005-11-10
WO2004002099A1 (de) 2003-12-31
ES2249733T3 (es) 2006-04-01
HU225835B1 (en) 2007-10-29
MXPA04010997A (es) 2005-05-27
KR20050007432A (ko) 2005-01-18
DE10228159A1 (de) 2004-01-22
CA2474559A1 (en) 2003-12-31
HUP0500020A2 (hu) 2005-05-30

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 7A,8A E 9A ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: NAO APRESENTADA A GUIA DE CUMPRIMENTO DE EXIGENCIA. REFERENTE AS 7A, 8A E 9A ANUIDADES.