BR0008086A - Processo para decodificação de sìmbolos no sinalrecebido em um receptor para uso em uma redesem fio, receptor aperfeiçoado para decodificarsinais, e, processo aperfeiçoado paradecodificação de sìmbolos modulados de espectroespalhado - Google Patents
Processo para decodificação de sìmbolos no sinalrecebido em um receptor para uso em uma redesem fio, receptor aperfeiçoado para decodificarsinais, e, processo aperfeiçoado paradecodificação de sìmbolos modulados de espectroespalhadoInfo
- Publication number
- BR0008086A BR0008086A BR0008086-1A BR0008086A BR0008086A BR 0008086 A BR0008086 A BR 0008086A BR 0008086 A BR0008086 A BR 0008086A BR 0008086 A BR0008086 A BR 0008086A
- Authority
- BR
- Brazil
- Prior art keywords
- decoding
- receiver
- symbols
- redesign
- wire
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7105—Joint detection techniques, e.g. linear detectors
- H04B1/71057—Joint detection techniques, e.g. linear detectors using maximum-likelihood sequence estimation [MLSE]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/711—Interference-related aspects the interference being multi-path interference
- H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/709—Correlator structure
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
"PROCESSO PARA DECODIFICAçãO DE SìMBOLOS NO SINALRECEBIDO EM UM RECEPTOR PARA USO EM UMA REDESEM FIO, RECEPTOR APERFEIçOADO PARA DECODIFICARSINAIS, E, PROCESSO APERFEIçOADO PARADECODIFICAçãO DE SìMBOLOS MODULADOS DE ESPECTROESPALHADO". Um receptor aperfeiçoado é divulgado paradecodificação de sinais codificados de espectro espalhadorecebidos através de um canal de propagação de múltiploscaminhos a fim de obter símbolos de informação decodificados. Oreceptor compreende um conversor para filtragem, amplificação,amostragem e conversão de sinais recebidos em amostrasnuméricas representativas e um correlacionador para correlacionaras amostras de sinais numéricos com um código dedesespalhamento através de cada um dos períodos de símbolosde informação para obter, para cada período de símbolos,correlações complexas para diferentes alinhamentos de tempoentre o código de desespalhamento e as amostras de sinais, cadaalinhamento de tempo correspondendo a um diferente dos múltiploscaminhos de propagação. O receptor ainda inclui dispositivo degeração de hipótese para gerar hipótese em seq³ências desímbolos de dados, dispositivo de estimativa de canais para formarestimativas de canais para cada um dos múltiplos caminhos depropagação como uma função das correlações complexas e dasseq³ências de símbolos com hipótese e dispositivo de decisãopara selecionar a mais provável das seq³ências com hipótese,usando as estimativas de canais, assim, decodificando os símbolosde informação.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/247,609 US6556634B1 (en) | 1999-02-10 | 1999-02-10 | Maximum likelihood rake receiver for use in a code division, multiple access wireless communication system |
PCT/US2000/002896 WO2000048330A1 (en) | 1999-02-10 | 2000-02-04 | Maximum likelihood rake receiver for use in a code division, multiple access wireless communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0008086A true BR0008086A (pt) | 2001-11-20 |
Family
ID=22935574
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0008086-1A BR0008086A (pt) | 1999-02-10 | 2000-02-04 | Processo para decodificação de sìmbolos no sinalrecebido em um receptor para uso em uma redesem fio, receptor aperfeiçoado para decodificarsinais, e, processo aperfeiçoado paradecodificação de sìmbolos modulados de espectroespalhado |
Country Status (8)
Country | Link |
---|---|
US (1) | US6556634B1 (pt) |
EP (1) | EP1151549B1 (pt) |
CN (1) | CN1197266C (pt) |
AT (1) | ATE239329T1 (pt) |
AU (1) | AU3482500A (pt) |
BR (1) | BR0008086A (pt) |
DE (1) | DE60002438T2 (pt) |
WO (1) | WO2000048330A1 (pt) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US7143013B2 (en) * | 1999-11-04 | 2006-11-28 | Verticalband, Limited | Reliable symbols as a means of improving the performance of information transmission systems |
US7085691B2 (en) * | 1999-11-04 | 2006-08-01 | Verticalband, Limited | Reliable symbols as a means of improving the performance of information transmission systems |
US7110923B2 (en) * | 1999-11-04 | 2006-09-19 | Verticalband, Limited | Fast, blind equalization techniques using reliable symbols |
CN1229921C (zh) * | 2000-09-06 | 2005-11-30 | 高通股份有限公司 | 从时分复用的导频数据中提供参考信号的方法和装置 |
US6771691B1 (en) * | 2000-09-15 | 2004-08-03 | Texas Instruments Incorporated | System and method for extracting soft symbols in direct sequence spread spectrum communications |
CN1146171C (zh) * | 2000-11-24 | 2004-04-14 | 华为技术有限公司 | 大容量同步码分多址扩频通信系统的实现方法 |
FR2829326A1 (fr) * | 2001-09-06 | 2003-03-07 | France Telecom | Procede et systeme de reception iterative sous optimale pour systeme de transmission haut debit cdma |
US7430191B2 (en) * | 2001-09-10 | 2008-09-30 | Qualcomm Incorporated | Method and apparatus for performing frequency tracking based on diversity transmitted pilots in a CDMA communication system |
US6826235B2 (en) * | 2002-01-04 | 2004-11-30 | Itran Communications Ltd. | Robust communications system utilizing repetition code and cumulative decoder associated therewith |
DE60234755D1 (de) * | 2002-05-17 | 2010-01-28 | Mitsubishi Electric Inf Tech | Mehrbenutzerdetektionsverfahren mit beschleunigter Kugeldekodierung |
AU2003266230A1 (en) * | 2002-08-14 | 2004-03-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Receiver and method for decoding of truncated data |
US7609777B2 (en) * | 2002-08-30 | 2009-10-27 | Alcatel-Lucent Usa Inc. | Maximum likelihood a posteriori probability detector |
US20040125865A1 (en) * | 2002-12-30 | 2004-07-01 | Frank Colin D. | Maximum signal-to-interference-and-noise spread spectrum rake receiver and method |
US7400692B2 (en) * | 2004-01-14 | 2008-07-15 | Interdigital Technology Corporation | Telescoping window based equalization |
US7298799B1 (en) | 2004-03-08 | 2007-11-20 | Redpine Signals, Inc. | All-tap fractionally spaced, serial rake combiner apparatus and method |
GB2422991B (en) * | 2005-02-03 | 2009-06-17 | Agilent Technologies Inc | Method of equalising a channel and apparatus therefor |
US7574645B2 (en) * | 2005-08-18 | 2009-08-11 | Interdigital Technology Corporation | Wireless communication method and apparatus for detecting and decoding enhanced dedicated channel hybrid automatic repeat request indicator channel transmissions |
CN100373792C (zh) * | 2005-10-28 | 2008-03-05 | 北京威讯紫晶科技有限公司 | 短程无线网络中接收数据的解码方法 |
WO2007091157A2 (en) * | 2006-02-08 | 2007-08-16 | Nokia Corporation | Apparatus, method and computer program product providing a transport format that is compatible with another transport format that uses spreading codes |
US7957453B2 (en) * | 2008-03-20 | 2011-06-07 | Raytheon Company | Method for operating a rake receiver |
US20130170842A1 (en) * | 2012-01-04 | 2013-07-04 | Toshiaki Koike-Akino | Method and System for Equalization and Decoding Received Signals Based on High-Order Statistics in Optical Communication Networks |
WO2014006449A1 (en) * | 2012-07-03 | 2014-01-09 | Freescale Semiconductor, Inc. | A communication device for wideband code division multiple access communication (w-cdma) system, a method for use therein and an associated semiconductor device |
WO2014065873A1 (en) * | 2012-10-22 | 2014-05-01 | Jeff Willey | Control messaging in multislot link layer flit |
US9210106B2 (en) | 2013-07-02 | 2015-12-08 | Freescale Semiconductor, Inc. | Communication device for wideband code division multiple access communication (W-CDMA) system, a method for use therein and an associated semiconductor device |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5187619A (en) | 1982-05-10 | 1993-02-16 | Digital Equipment Corporation | High speed switched automatic gain control |
SE464902B (sv) | 1989-10-24 | 1991-06-24 | Ericsson Telefon Ab L M | Foerfarande att adaptera en viterbialgoritm till en kanal med skiftande oeverfoeringsegenskaper samt en anordning foer genomfoerande av foerfarandet |
US5151919A (en) | 1990-12-17 | 1992-09-29 | Ericsson-Ge Mobile Communications Holding Inc. | Cdma subtractive demodulation |
US5230003A (en) | 1991-02-08 | 1993-07-20 | Ericsson-Ge Mobile Communications Holding, Inc. | Decoding system for distinguishing different types of convolutionally-encoded signals |
US5263053A (en) | 1992-03-24 | 1993-11-16 | Novatel Communications Ltd. | Fractionally spaced maximum likelihood sequence estimation receiver |
US5331666A (en) | 1992-06-08 | 1994-07-19 | Ericsson Ge Mobile Communications Inc. | Adaptive maximum likelihood demodulator |
US5335250A (en) | 1992-10-22 | 1994-08-02 | Ericsson Ge Mobile Communications Inc. | Method and apparatus for bidirectional demodulation of digitally modulated signals |
US5305349A (en) | 1993-04-29 | 1994-04-19 | Ericsson Ge Mobile Communications Inc. | Quantized coherent rake receiver |
US5673291A (en) | 1994-09-14 | 1997-09-30 | Ericsson Inc. | Simultaneous demodulation and decoding of a digitally modulated radio signal using known symbols |
US5790606A (en) * | 1994-01-11 | 1998-08-04 | Ericsson Inc. | Joint demodulation using spatial maximum likelihood |
US5572552A (en) | 1994-01-27 | 1996-11-05 | Ericsson Ge Mobile Communications Inc. | Method and system for demodulation of downlink CDMA signals |
US5557645A (en) * | 1994-09-14 | 1996-09-17 | Ericsson-Ge Mobile Communications Inc. | Channel-independent equalizer device |
US5862190A (en) | 1995-12-29 | 1999-01-19 | Motorola, Inc. | Method and apparatus for decoding an encoded signal |
US6226315B1 (en) * | 1998-03-09 | 2001-05-01 | Texas Instruments Incorporated | Spread-spectrum telephony with accelerated code acquisition |
SE9800827L (sv) * | 1998-03-13 | 1999-09-14 | Ericsson Telefon Ab L M | Mottagare |
US6363104B1 (en) * | 1998-10-02 | 2002-03-26 | Ericsson Inc. | Method and apparatus for interference cancellation in a rake receiver |
US6366629B1 (en) * | 1998-11-03 | 2002-04-02 | Tektronix, Inc. | Method of estimating timing phase and rate offsets in digital data |
-
1999
- 1999-02-10 US US09/247,609 patent/US6556634B1/en not_active Expired - Lifetime
-
2000
- 2000-02-04 WO PCT/US2000/002896 patent/WO2000048330A1/en active IP Right Grant
- 2000-02-04 EP EP00913361A patent/EP1151549B1/en not_active Expired - Lifetime
- 2000-02-04 AT AT00913361T patent/ATE239329T1/de not_active IP Right Cessation
- 2000-02-04 CN CN00803636.5A patent/CN1197266C/zh not_active Expired - Fee Related
- 2000-02-04 AU AU34825/00A patent/AU3482500A/en not_active Abandoned
- 2000-02-04 DE DE60002438T patent/DE60002438T2/de not_active Expired - Lifetime
- 2000-02-04 BR BR0008086-1A patent/BR0008086A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1151549B1 (en) | 2003-05-02 |
CN1354915A (zh) | 2002-06-19 |
CN1197266C (zh) | 2005-04-13 |
WO2000048330A1 (en) | 2000-08-17 |
DE60002438D1 (de) | 2003-06-05 |
ATE239329T1 (de) | 2003-05-15 |
DE60002438T2 (de) | 2003-11-20 |
AU3482500A (en) | 2000-08-29 |
US6556634B1 (en) | 2003-04-29 |
EP1151549A1 (en) | 2001-11-07 |
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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 ANUIDADES |
|
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: REFERENTE AO DESPACHO 8.6 NA RPI2003 DE 26/05/2009. |