BR0215788A - Método e aparelho para a seleção de antena utilizando informações de resposta de canal em um sistema de múltiplas portadoras - Google Patents
Método e aparelho para a seleção de antena utilizando informações de resposta de canal em um sistema de múltiplas portadorasInfo
- Publication number
- BR0215788A BR0215788A BR0215788-8A BR0215788A BR0215788A BR 0215788 A BR0215788 A BR 0215788A BR 0215788 A BR0215788 A BR 0215788A BR 0215788 A BR0215788 A BR 0215788A
- Authority
- BR
- Brazil
- Prior art keywords
- channel
- subcarrier
- channel response
- carrier system
- response information
- Prior art date
Links
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
- H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
- H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0071—Use of interleaving
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- 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
-
- 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
- H04L25/022—Channel estimation of frequency response
-
- 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
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
- H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0014—Three-dimensional division
- H04L5/0023—Time-frequency-space
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Artificial Intelligence (AREA)
- Error Detection And Correction (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Radio Transmission System (AREA)
Abstract
"MéTODO E APARELHO PARA A SELEçãO DE ANTENA UTILIZANDO INFORMAçõES DE RESPOSTA DE CANAL EM UM SISTEMA DE MúLTIPLAS PORTADORAS". As presentes modalidades referem-se a uma técnica (116) para a seleção de uma dentre diversas antenas ou canais em um receptor com base na qualidade da resposta de canal em cada uma das antenas em um sistema de múltiplas portadoras que emprega uma codificação de correção antecipada de erros convolucional. As estimativas de canal são computadas (120) para cada sub-portadora e os pesos monotónicos são atribuídos (122) a cada sub-portadora com base na intensidade relativa da resposta de canal para aquela sub-portadora. Os pesos monotónicos sao mapeados (124) em cada bit em um símbolo para cada sub-portadora e os bits são desintercalados (126), se necessário. Uma avaliação de janela deslizante é feita (128) no sentido de determinar uma métrica de qualidade de canal (CQM) geral para cada canal. A antena ou canal tendo a métrica CQM geral mais elevada é selecionada (132) para receber os dados.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2002/020504 WO2004003743A1 (en) | 2002-06-28 | 2002-06-28 | Method and apparatus for antenna selection using channel response information in a multi-carrier system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0215788A true BR0215788A (pt) | 2005-03-01 |
Family
ID=29998737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0215788-8A BR0215788A (pt) | 2002-06-28 | 2002-06-28 | Método e aparelho para a seleção de antena utilizando informações de resposta de canal em um sistema de múltiplas portadoras |
Country Status (9)
Country | Link |
---|---|
US (1) | US7468962B2 (pt) |
EP (1) | EP1552391A4 (pt) |
JP (1) | JP4354401B2 (pt) |
KR (1) | KR100897660B1 (pt) |
CN (1) | CN100338577C (pt) |
AU (1) | AU2002368057A1 (pt) |
BR (1) | BR0215788A (pt) |
MX (1) | MXPA04012872A (pt) |
WO (1) | WO2004003743A1 (pt) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8488792B2 (en) * | 2005-10-26 | 2013-07-16 | Hewlett-Packard Development Company, L.P. | Wireless communications validation system and method |
JP4752523B2 (ja) * | 2006-01-26 | 2011-08-17 | ソニー株式会社 | 無線通信装置及び方法 |
KR20080113097A (ko) * | 2006-04-05 | 2008-12-26 | 에이저 시스템즈 인크 | 이동 단말용 hsdpa 코프로세서 |
JP4315990B2 (ja) * | 2007-04-09 | 2009-08-19 | 三洋電機株式会社 | デジタル放送受信機 |
CN101437008B (zh) * | 2007-11-16 | 2014-12-10 | 瑞昱半导体股份有限公司 | 多输入输出多载波系统的接收机及其天线选择装置与方法 |
US9167466B2 (en) | 2012-09-06 | 2015-10-20 | Apple Inc. | Enhanced measurement reporting to improve throughput when using multicarrier cells |
WO2020078531A1 (en) * | 2018-10-15 | 2020-04-23 | Huawei Technologies Co., Ltd. | Device and method for wireless network communication |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010055320A1 (en) * | 1994-12-15 | 2001-12-27 | Pierzga Wayne Francis | Multiplex communication |
SE515752C2 (sv) * | 1995-08-28 | 2001-10-08 | Telia Ab | Direktåtkomst i OFDM-system |
US6359938B1 (en) * | 1996-10-31 | 2002-03-19 | Discovision Associates | Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing |
JP3576415B2 (ja) | 1998-12-22 | 2004-10-13 | 松下電器産業株式会社 | Ofdm受信装置 |
JP3654185B2 (ja) | 1999-03-10 | 2005-06-02 | ソニー株式会社 | ディジタル放送受信装置 |
JP3667549B2 (ja) * | 1999-03-29 | 2005-07-06 | 日本電気株式会社 | ダイバーシティ受信装置 |
JP3581294B2 (ja) * | 2000-03-31 | 2004-10-27 | 株式会社東芝 | 受信装置 |
US6973134B1 (en) * | 2000-05-04 | 2005-12-06 | Cisco Technology, Inc. | OFDM interference cancellation based on training symbol interference |
GB0020071D0 (en) * | 2000-08-16 | 2000-10-04 | Mitel Semiconductor Ltd | Tuner |
US6985434B2 (en) * | 2000-09-01 | 2006-01-10 | Nortel Networks Limited | Adaptive time diversity and spatial diversity for OFDM |
US20020111142A1 (en) * | 2000-12-18 | 2002-08-15 | Klimovitch Gleb V. | System, apparatus, and method of estimating multiple-input multiple-output wireless channel with compensation for phase noise and frequency offset |
US6990153B1 (en) * | 2001-02-06 | 2006-01-24 | Agency For Science, Technology And Research | Method and apparatus for semi-blind communication channel estimation |
US7047016B2 (en) * | 2001-05-16 | 2006-05-16 | Qualcomm, Incorporated | Method and apparatus for allocating uplink resources in a multiple-input multiple-output (MIMO) communication system |
US6563885B1 (en) * | 2001-10-24 | 2003-05-13 | Texas Instruments Incorporated | Decimated noise estimation and/or beamforming for wireless communications |
US7020110B2 (en) * | 2002-01-08 | 2006-03-28 | Qualcomm Incorporated | Resource allocation for MIMO-OFDM communication systems |
-
2002
- 2002-06-28 AU AU2002368057A patent/AU2002368057A1/en not_active Abandoned
- 2002-06-28 MX MXPA04012872A patent/MXPA04012872A/es active IP Right Grant
- 2002-06-28 US US10/518,555 patent/US7468962B2/en not_active Expired - Fee Related
- 2002-06-28 CN CNB028292383A patent/CN100338577C/zh not_active Expired - Fee Related
- 2002-06-28 EP EP02752110A patent/EP1552391A4/en not_active Withdrawn
- 2002-06-28 BR BR0215788-8A patent/BR0215788A/pt not_active IP Right Cessation
- 2002-06-28 WO PCT/US2002/020504 patent/WO2004003743A1/en active Application Filing
- 2002-06-28 JP JP2004517479A patent/JP4354401B2/ja not_active Expired - Fee Related
- 2002-06-28 KR KR1020047021242A patent/KR100897660B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
MXPA04012872A (es) | 2006-02-10 |
US7468962B2 (en) | 2008-12-23 |
JP4354401B2 (ja) | 2009-10-28 |
KR20050013641A (ko) | 2005-02-04 |
KR100897660B1 (ko) | 2009-05-14 |
AU2002368057A1 (en) | 2004-01-19 |
CN1633643A (zh) | 2005-06-29 |
US20050193305A1 (en) | 2005-09-01 |
EP1552391A1 (en) | 2005-07-13 |
WO2004003743A1 (en) | 2004-01-08 |
CN100338577C (zh) | 2007-09-19 |
EP1552391A4 (en) | 2011-03-09 |
JP2005531977A (ja) | 2005-10-20 |
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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(S) 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: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2108 DE 31/05/2011. |