BR9810839A - Processador de banda base para um receptor, métodos para processamento em um receptor e para recepção de sinais de rádio, radiorreceptor e estimador de canal de junção - Google Patents

Processador de banda base para um receptor, métodos para processamento em um receptor e para recepção de sinais de rádio, radiorreceptor e estimador de canal de junção

Info

Publication number
BR9810839A
BR9810839A BR9810839-5A BR9810839A BR9810839A BR 9810839 A BR9810839 A BR 9810839A BR 9810839 A BR9810839 A BR 9810839A BR 9810839 A BR9810839 A BR 9810839A
Authority
BR
Brazil
Prior art keywords
receiver
junction
signals
channel estimator
methods
Prior art date
Application number
BR9810839-5A
Other languages
English (en)
Other versions
BR9810839B1 (pt
Inventor
Huseyin Arslan
Someshwar C Gupta
Gregory E Bottomley
Sandeep Chennakeshu
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Publication of BR9810839A publication Critical patent/BR9810839A/pt
Publication of BR9810839B1 publication Critical patent/BR9810839B1/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
    • H04L25/03331—Arrangements for the joint estimation of multiple sequences
    • 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
    • H04L25/0204—Channel estimation of multiple channels

Landscapes

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

Abstract

''PROCESSADOR DE BANDA BASE PARA UM RECEPTOR, MéTODOS PARA PROCESSAMENTO EM UM RECEPTOR E PARA RECEPçãO DE SINAIS DE RáDIO, RADIORRECEPTOR E ESTIMADOR DE CANAL DE JUNçãO". Processos e aparelho para receber sinais de canal adjacente em que efeitos de interferência de canal adjacente são minimizados através de demodulação de junção dos sinais de canal adjacente. Um canal associado com sinal e cada correspondente banda de frequência é estimado e usado para formar métricas de ramal de junção para estimação de seq³ência de junção. Em uma concretização exemplar, um processador de banda base recebe amostras de banda base correspondendo pelo menos a uma frequência portadora, e então juntamente demodula pelo menos dois fluxos de informação correspondendo a diferentes frequências portadoras na dependência das amostras de banda base recebida. Em outra concretização, um estimador de canal de junção recebe pelo menos dois fluxos de amostra de banda base, cada fluxo correspondendo a uma diferente banda de frequência, e juntamente estimam respostas de meio para cada um dos pelo menos dois sinais de informação que foram transmitidos em diferentes bandas de frequência.
BRPI9810839-5A 1997-07-28 1998-07-27 receptor de rÁdio, e, processo para demodular pelo menos duas correntes de informaÇço. BR9810839B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/901,694 US6108517A (en) 1997-07-28 1997-07-28 Methods and apparatus for joint demodulation of adjacent channel signals in digital communications systems
PCT/US1998/015332 WO1999005833A1 (en) 1997-07-28 1998-07-27 Methods and apparatus for joint demodulation of adjacent channel signals in digital communications systems

Publications (2)

Publication Number Publication Date
BR9810839A true BR9810839A (pt) 2000-07-25
BR9810839B1 BR9810839B1 (pt) 2013-03-19

Family

ID=25414652

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9810839-5A BR9810839B1 (pt) 1997-07-28 1998-07-27 receptor de rÁdio, e, processo para demodular pelo menos duas correntes de informaÇço.

Country Status (9)

Country Link
US (1) US6108517A (pt)
EP (1) EP1000490B1 (pt)
JP (1) JP4153161B2 (pt)
CN (1) CN1135802C (pt)
AU (1) AU8585398A (pt)
BR (1) BR9810839B1 (pt)
CA (1) CA2297662A1 (pt)
DE (1) DE69825055T2 (pt)
WO (1) WO1999005833A1 (pt)

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US5889827A (en) * 1996-12-12 1999-03-30 Ericsson Inc. Method and apparatus for digital symbol detection using medium response estimates
JP3180761B2 (ja) * 1997-07-23 2001-06-25 三菱電機株式会社 系列推定方法及び系列推定装置
DE19815701A1 (de) * 1998-04-08 1999-10-14 Bosch Gmbh Robert Verfahren zum Demodulieren einer mit einer digitalen Symbolfolge modulierten Trägerwelle
US7099410B1 (en) * 1999-01-26 2006-08-29 Ericsson Inc. Reduced complexity MLSE equalizer for M-ary modulated signals
US6674815B2 (en) * 1999-06-16 2004-01-06 Ericsson, Inc Method for symbol-spaced estimation and/or tracking of a fractionally-spaced fading radio channel
US6278726B1 (en) 1999-09-10 2001-08-21 Interdigital Technology Corporation Interference cancellation in a spread spectrum communication system
US6115406A (en) * 1999-09-10 2000-09-05 Interdigital Technology Corporation Transmission using an antenna array in a CDMA communication system
US6832080B1 (en) * 2000-09-12 2004-12-14 Ericsson, Inc. Apparatus for and method of adapting a radio receiver using control functions
US6792052B1 (en) 2000-11-22 2004-09-14 Telefonaktiebolaget Lm Ericsson Joint least-square synchronization, channel estimation and noise estimation
US7394864B2 (en) * 2001-07-06 2008-07-01 Conexant, Inc. Mixed waveform configuration for wireless communications
EP1282245A1 (en) * 2001-07-30 2003-02-05 Telefonaktiebolaget L M Ericsson (Publ) Channel estimation in a multi carrier transmit diversity system
US7349469B1 (en) * 2001-08-17 2008-03-25 Ati Research, Inc. DC offset correction for constant modulus equalization
US7346126B2 (en) 2001-11-28 2008-03-18 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for channel estimation using plural channels
US6714607B2 (en) 2001-12-20 2004-03-30 Sbc Technology Resources, Inc. Joint demodulation using a viterbi equalizer having an adaptive total number of states
EP1395008A1 (de) * 2002-09-02 2004-03-03 Siemens Aktiengesellschaft Gemeinsame Detektion zweier Signale
US7295517B2 (en) * 2002-11-27 2007-11-13 Texas Instruments Incorporated Method and apparatus for channel quality metric generation within a packet-based multicarrier modulation communication system
US7437135B2 (en) 2003-10-30 2008-10-14 Interdigital Technology Corporation Joint channel equalizer interference canceller advanced receiver
US7321646B2 (en) * 2003-11-18 2008-01-22 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatus for pre-filtering a signal to increase signal-to-noise ratio and decorrelate noise
US7400692B2 (en) 2004-01-14 2008-07-15 Interdigital Technology Corporation Telescoping window based equalization
JP4403010B2 (ja) * 2004-02-03 2010-01-20 株式会社エヌ・ティ・ティ・ドコモ 信号分離装置
IL160832A (en) * 2004-03-11 2009-02-11 Alvarion Ltd Spectrum sharing between wireless systems
IL161419A (en) * 2004-04-15 2010-02-17 Alvarion Ltd Handling communication interferences in wireless systems
CN101163316B (zh) * 2007-11-14 2012-01-25 中兴通讯股份有限公司 基带资源分配中处理系统消息的方法、系统及基带单元
EP2228916A1 (en) * 2009-03-12 2010-09-15 Astrim Limited Interference removal
CN109756257B (zh) * 2017-11-07 2023-07-07 珠海市魅族科技有限公司 用于接收端或发射端的数据传输方法及装置
EP3900284B1 (en) * 2018-12-17 2023-11-08 U-blox AG Estimating one or more characteristics of a communications channel

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SE465597B (sv) * 1990-02-16 1991-09-30 Ericsson Telefon Ab L M Foerfarande att reducera inverkan av faedning hos en viterbimottagare med minst tvaa antenner
US5126682A (en) * 1990-10-16 1992-06-30 Stanford Telecommunications, Inc. Demodulation method and apparatus incorporating charge coupled devices
US5218619A (en) * 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation
WO1994000918A1 (en) * 1992-06-26 1994-01-06 Sotel, Phillip, K. Method and apparatus for interference cancellation in a multiple access communication receiver
DE69432447T2 (de) * 1993-01-19 2003-12-24 Nippon Telegraph & Telephone Verfahren und vorrichtung zur reduktion von störwellen eines kommunikationssystems
US5506861A (en) * 1993-11-22 1996-04-09 Ericsson Ge Mobile Comminications Inc. System and method for joint demodulation of CDMA signals
US5937015A (en) * 1994-01-11 1999-08-10 Dent; Paul W. Interference mitigation by joint decoding of overlapped signals
US5790606A (en) * 1994-01-11 1998-08-04 Ericsson Inc. Joint demodulation using spatial maximum likelihood
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JP3325735B2 (ja) * 1995-01-31 2002-09-17 松下電器産業株式会社 データ受信装置
FR2738095B1 (fr) * 1995-08-21 1997-11-07 France Telecom Procede et dispositif de demodulation d'un signal multiporteuse tenant compte d'une estimation de la reponse du canal de transmission et d'une estimaton d'une distorsion blanche en frequence
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US5822380A (en) * 1996-08-12 1998-10-13 Ericsson Inc. Apparatus and method for joint channel estimation
US5724001A (en) * 1996-12-02 1998-03-03 Motorola, Inc. Method and apparatus for demodulating a frequency shift keyed signal

Also Published As

Publication number Publication date
WO1999005833A1 (en) 1999-02-04
DE69825055D1 (de) 2004-08-19
CN1265797A (zh) 2000-09-06
JP2001511623A (ja) 2001-08-14
CN1135802C (zh) 2004-01-21
US6108517A (en) 2000-08-22
EP1000490A1 (en) 2000-05-17
BR9810839B1 (pt) 2013-03-19
JP4153161B2 (ja) 2008-09-17
EP1000490B1 (en) 2004-07-14
DE69825055T2 (de) 2005-07-28
CA2297662A1 (en) 1999-02-04
AU8585398A (en) 1999-02-16

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 19/03/2013, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

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B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2594 DE 24-09-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.