BR0103580A - Sequências de treinamento e sincronização para sistemas sem fio com diversas antenas de transmissão e recepção utilizadas em sistemas cdma ou tdma - Google Patents

Sequências de treinamento e sincronização para sistemas sem fio com diversas antenas de transmissão e recepção utilizadas em sistemas cdma ou tdma

Info

Publication number
BR0103580A
BR0103580A BR0103580-0A BR0103580A BR0103580A BR 0103580 A BR0103580 A BR 0103580A BR 0103580 A BR0103580 A BR 0103580A BR 0103580 A BR0103580 A BR 0103580A
Authority
BR
Brazil
Prior art keywords
systems
cdma
training
transmission
transmission antenna
Prior art date
Application number
BR0103580-0A
Other languages
English (en)
Inventor
Markus Rupp
Original Assignee
Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of BR0103580A publication Critical patent/BR0103580A/pt

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/102—Combining codes
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0684—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission using different training sequences per antenna
    • 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
    • H04B7/0837—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 pre-detection combining

Landscapes

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

Abstract

"SEQuêNCIAS DE TREINAMENTO E SINCRONIZAçãO PARA SISTEMAS SEM PIO COM DIVERSAS ANTENAS DE TRANSMISSãO E RECEPçãO UTILIZADAS EM SISTEMAS CDMA OU TDMA". Seq³ências ortogonais podem ser desenvolvidas e utilizadas em treinamento e sincronização em sistemas CDMA e TDMA. Em particular, quando é desenvolvida uma seq³ência que tenha o comprimento do produto do comprimento de canal e do número de antenas de transmissão, a seq³ência é deslocada em um valor diferente para cada antena de transmissão. Por exemplo, cada seq³ência poderia ser deslocada em um múltiplo do comprimento do canal para cada antena de transmissão, onde o múltiplo varia entre 0 e N-1, onde N é o número de antenas de transmissão. Além disso, ao não utilizar exatamente o mesmo valor de deslocamento para cada antena de transmissão, por exemplo, não tendo cada sinal deslocado pelo comprimento do canal, mas mantendo o mesmo deslocamento total global, por exemplo, a média de cada deslocamento é o comprimento do canal, é possível determinar em um receptor a partir de que antena de transmissão se originou um sinal específico.
BR0103580-0A 2000-08-28 2001-08-22 Sequências de treinamento e sincronização para sistemas sem fio com diversas antenas de transmissão e recepção utilizadas em sistemas cdma ou tdma BR0103580A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/648,981 US7173899B1 (en) 2000-08-28 2000-08-28 Training and synchronization sequences for wireless systems with multiple transmit and receive antennas used in CDMA or TDMA systems

Publications (1)

Publication Number Publication Date
BR0103580A true BR0103580A (pt) 2002-04-23

Family

ID=24603003

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0103580-0A BR0103580A (pt) 2000-08-28 2001-08-22 Sequências de treinamento e sincronização para sistemas sem fio com diversas antenas de transmissão e recepção utilizadas em sistemas cdma ou tdma

Country Status (9)

Country Link
US (1) US7173899B1 (pt)
EP (1) EP1191708B1 (pt)
JP (1) JP4727088B2 (pt)
KR (1) KR100782669B1 (pt)
CN (1) CN1207848C (pt)
AU (1) AU6356001A (pt)
BR (1) BR0103580A (pt)
CA (1) CA2352010C (pt)
DE (1) DE60101831T2 (pt)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100340068C (zh) * 2002-04-22 2007-09-26 Ipr许可公司 多输入多输出无线通信方法及具有无线前端部件的收发机
CN101242214B (zh) * 2002-10-25 2012-09-05 高通股份有限公司 无线多输入多输出通信系统内生成导频的方法
WO2004114683A2 (en) * 2003-05-27 2004-12-29 Interdigital Technology Corporation Multi-mode radio with interference cancellation circuit
WO2005008931A1 (ja) * 2003-07-16 2005-01-27 Nec Corporation 送信装置、受信装置、無線通信システム
JP4212548B2 (ja) * 2003-12-26 2009-01-21 株式会社東芝 無線送信装置、無線受信装置、無線送信方法及び無線受信方法
CN102664667B (zh) * 2004-05-04 2018-04-06 索尼公司 一种移动终端、方法和基站
KR100583679B1 (ko) * 2004-06-09 2006-05-26 재단법인서울대학교산학협력재단 무선 다중입출력 채널의 임펄스응답 특성 측정 방법 및이를 위한 장치
US8040968B2 (en) 2004-09-30 2011-10-18 Intel Corporation High rate, high diversity transmission on multiple transmit antennas
US8737189B2 (en) * 2005-02-16 2014-05-27 Broadcom Corporation Method and system for compromise greenfield preambles for 802.11n
US8045599B2 (en) * 2005-02-17 2011-10-25 Sony Corporation Selection of training sequences for multiple-in multiple-out transmissions
WO2007023524A1 (ja) * 2005-08-22 2007-03-01 Matsushita Electric Industrial Co., Ltd. 基地局装置および移動局装置
EP1977539A4 (en) * 2006-01-06 2013-08-21 Nokia Corp SPECIAL SYNCHRONIZATION SIGNAL FOR AN OFDMA SYSTEM
US7634235B2 (en) * 2006-05-30 2009-12-15 Broadcom Corporation Method and apparatus to improve closed loop transmit diversity modes performance via interference suppression in a WCDMA network equipped with a rake receiver
US20080225688A1 (en) * 2007-03-14 2008-09-18 Kowalski John M Systems and methods for improving reference signals for spatially multiplexed cellular systems
US8611440B2 (en) * 2007-10-30 2013-12-17 Huawei Technologies Co., Ltd. Systems and methods for generating sequences that are nearest to a set of sequences with minimum average cross-correlation
US8112041B2 (en) * 2007-03-14 2012-02-07 Sharp Kabushiki Kaisha Systems and methods for generating sequences that are nearest to a set of sequences with minimum average cross-correlation
US7961587B2 (en) 2007-03-19 2011-06-14 Sharp Laboratories Of America, Inc. Systems and methods for reducing peak to average cross-correlation for sequences designed by alternating projections
US20080310383A1 (en) * 2007-06-15 2008-12-18 Sharp Laboratories Of America, Inc. Systems and methods for designing a sequence for code modulation of data and channel estimation
US8068551B2 (en) * 2007-09-06 2011-11-29 Sharp Laboratories Of America, Inc. Systems and methods for designing a reference signal to be transmitted in a multiplexed cellular system
JP5006172B2 (ja) * 2007-12-04 2012-08-22 パナソニック株式会社 無線通信方法及び無線通信システム
US7933355B2 (en) * 2008-08-18 2011-04-26 Research In Motion Limited Systems, devices, and methods for training sequence, transmission and reception
JP2012502582A (ja) * 2008-09-12 2012-01-26 クゥアルコム・インコーポレイテッド 通信リンクのために使用するトレーニングシーケンスコードのセットはどれかをモバイルデバイスに対してシグナリングするための方法及び装置
CN101741701B (zh) * 2008-11-12 2012-01-11 中兴通讯股份有限公司 同步调度方法和装置
US9113490B2 (en) * 2011-04-24 2015-08-18 Broadcom Corporation Short training field (STF) for use within single user, multiple user, multiple access, and/or MIMO wireless communications
CN112965365B (zh) * 2021-02-23 2023-03-31 浙江中智达科技有限公司 Pid控制回路的模型辨识方法、装置、系统及存储介质

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561089A (en) 1984-03-23 1985-12-24 Sangamo Weston, Inc. Correlation detectors for use in direct sequence spread spectrum signal receiver
US5081645A (en) * 1990-08-06 1992-01-14 Aware, Inc. Novel spread spectrum codec apparatus and method
US5450456A (en) * 1993-11-12 1995-09-12 Daimler Benz Ag Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system
JPH07336323A (ja) * 1994-06-10 1995-12-22 Oki Electric Ind Co Ltd 符号分割多元接続装置
KR970011690B1 (ko) * 1994-11-22 1997-07-14 삼성전자 주식회사 파일럿트 채널을 이용한 대역확산 통신시스템의 데이타 송신기 및 수신기
US5757767A (en) 1995-04-18 1998-05-26 Qualcomm Incorporated Method and apparatus for joint transmission of multiple data signals in spread spectrum communication systems
JPH08331095A (ja) * 1995-05-31 1996-12-13 Sony Corp 通信システム
US5793798A (en) 1995-12-18 1998-08-11 Ail Systems, Inc. Virtual beam system
US6389085B1 (en) * 1998-01-14 2002-05-14 Wavecom Electronics Inc. Receiver combiner for spatial diversity digital communications
US6366588B1 (en) * 1998-02-27 2002-04-02 Lucent Technologies Inc. Method and apparatus for achieving data rate variability in orthogonal spread spectrum communication systems
FR2776146B1 (fr) * 1998-03-13 2000-08-04 Mitsubishi Electric Inf Tech Procede de demodulation de signaux representatifs de sequences emises dans un systeme de communications
FR2784823B1 (fr) * 1998-10-15 2002-11-29 Cit Alcatel Procede de transmission dans un systeme de radiocommunication du type a acces multiple
KR100275708B1 (ko) * 1998-12-31 2000-12-15 윤종용 아날로그 방송의 채널 간섭을 개선한 디지털방송 신호 처리 장치 및 방법
US6396953B1 (en) * 1999-02-23 2002-05-28 Rockwell Collins, Inc. Data pattern correlator
US6873647B1 (en) * 1999-02-26 2005-03-29 Qualcomm Incorporated Method and system for reducing synchronization time in a CDMA wireless communication system
US6567482B1 (en) * 1999-03-05 2003-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient synchronization in spread spectrum communications
US6611494B1 (en) * 1999-05-19 2003-08-26 Agere Systems Inc. Orthogonal sequence generator
US6647245B1 (en) * 1999-05-28 2003-11-11 Glen V Rosenbaum Subsidiary communication authorization (SCA) radio turner
US6788661B1 (en) * 1999-11-12 2004-09-07 Nikia Networks Oy Adaptive beam-time coding method and apparatus

Also Published As

Publication number Publication date
DE60101831T2 (de) 2004-12-02
JP2002152091A (ja) 2002-05-24
CA2352010C (en) 2005-05-24
EP1191708A1 (en) 2002-03-27
DE60101831D1 (de) 2004-02-26
US7173899B1 (en) 2007-02-06
AU6356001A (en) 2002-03-07
KR100782669B1 (ko) 2007-12-07
EP1191708B1 (en) 2004-01-21
CN1207848C (zh) 2005-06-22
CN1340926A (zh) 2002-03-20
CA2352010A1 (en) 2002-02-28
KR20020018010A (ko) 2002-03-07
JP4727088B2 (ja) 2011-07-20

Similar Documents

Publication Publication Date Title
BR0103580A (pt) Sequências de treinamento e sincronização para sistemas sem fio com diversas antenas de transmissão e recepção utilizadas em sistemas cdma ou tdma
BR0114769A (pt) Método e equipamento para estimativa de canal de classificação reduzida em um sistema de comunicações
BR0207123A (pt) método para extrair um padrão de referência variável
BR9813306A (pt) Avaliação de canal de transmissão em sistemas de telecomunicação com telecomunicação sem fio
HK1104719A1 (en) Transmission of overhead information for reception of multiple data streams
WO2002021705A3 (en) Method and system for high speed wireless data transmission and reception
BR9905140A (pt) Diversidade de transmissão e equalização para ligações de rádio.
WO2001080446A3 (en) Time-reversal block transmit diversity system for channels with intersymbol interference and method
BR0103224A (pt) Sistemas de comunicação sem fio que utilizam múltiplas antenas no transmissor e múltiplas antenas no receptor
HK1061938A1 (en) Transmitter for a wireless communications system using multiple codes and multiple antennas
BR0214530A (pt) Dispositivo de comunicação móvel multimodo com transceptor de modo contìnuo e métodos para o mesmo
BG104592A (en) Mobile station assisted timing synchronization in a cdma communication system
ATE556512T1 (de) Zufallszugriff für drahtlose vielfachzugriffsübertragungssysteme
HK1098602A1 (en) Mbms acknowledgements on rach
BR9908784A (pt) Processo de selecionar entre uma pluralidade de antenas utilizadas por um terminal de comunicação microcelular para recepção de um sinal e receptor para um terminal de comunicação microcelular
MY154923A (en) Reference signal design for cell search in an orthogonal wireless communication system
BR0100011A (pt) Processamento em espaço-tempo para sistemas sem fio de multi-entrada e multi-saìda
WO2008156412A3 (en) Transmission of system information on a downlink shared channel
WO2005043794A3 (en) Transmission of overhead information for reception of multiple data streams
MXPA04004338A (es) Comunicaciones en una red inalambrica asincroncia.
BR0206248A (pt) Sistema de comunicação móvel
BR0114861A (pt) Método e equipamento para transmissão de dados em pacotes com taxa elevada e de dados de baixo retardo
WO2004075459A3 (en) Transmit diversity and separating multiple loopback signals
EP1599003A4 (en) SENDING / RECEIVING SYSTEM, TRANSMISSION DEVICE AND METHOD AND RECEPTION DEVICE AND METHOD
EP1271949A4 (en) SIGNAL TRANSMISSION SYSTEM, SIGNAL TRANSMITTER, AND SIGNAL RECEIVER

Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]