BR0103361A - Método para aprimorar o sinal de comunicação dentro de um sistema de comunicação móvel cdma que utiliza uma diversidade de espaço-tempo - Google Patents

Método para aprimorar o sinal de comunicação dentro de um sistema de comunicação móvel cdma que utiliza uma diversidade de espaço-tempo

Info

Publication number
BR0103361A
BR0103361A BR0103361-1A BR0103361A BR0103361A BR 0103361 A BR0103361 A BR 0103361A BR 0103361 A BR0103361 A BR 0103361A BR 0103361 A BR0103361 A BR 0103361A
Authority
BR
Brazil
Prior art keywords
space
diversity
time
improve
cdma mobile
Prior art date
Application number
BR0103361-1A
Other languages
English (en)
Inventor
Shang-Chieh Liu
Hung-Yao Yeh
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 BR0103361A publication Critical patent/BR0103361A/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
    • 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
    • H04B7/0615—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 of weighted versions of same signal
    • H04B7/0617—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 of weighted versions of same signal for beam forming
    • 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
    • H04B7/0667—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 of delayed versions of same signal
    • H04B7/0669—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 of delayed versions of same signal using different channel coding between antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0048—Walsh
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/102—Combining codes
    • H04J13/105—Combining codes by extending
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

"MéTODO PARA APRIMORAR O SINAL DE COMUNICAçãO DENTRO DE UM SISTEMA DE COMUNICAçãO MóVEL CDMA QUE UTILIZA UMA DIVERSIDADE DE ESPAçO-TEMPO". Uma antena inteligente aplica um esquema de diversidade de transmissão no espaço-tempo à diversidade de transmissão angular e temporária para combinar com um feixe de comutação de entrelaçamento de polarização para aprimorar o desempenho do acesso múltiplo por divisão de código de banda larga de link descendente. O ganho de abertura é transferido para o ganho de diversidade ao dividir um ângulo de saída diferente com diferente espalhamento de espaço-tempo.
BR0103361-1A 2000-08-22 2001-08-15 Método para aprimorar o sinal de comunicação dentro de um sistema de comunicação móvel cdma que utiliza uma diversidade de espaço-tempo BR0103361A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64356200A 2000-08-22 2000-08-22

Publications (1)

Publication Number Publication Date
BR0103361A true BR0103361A (pt) 2002-04-23

Family

ID=24581334

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0103361-1A BR0103361A (pt) 2000-08-22 2001-08-15 Método para aprimorar o sinal de comunicação dentro de um sistema de comunicação móvel cdma que utiliza uma diversidade de espaço-tempo

Country Status (6)

Country Link
EP (1) EP1182799A3 (pt)
JP (1) JP2002135232A (pt)
KR (1) KR20020015668A (pt)
CN (1) CN1339885A (pt)
BR (1) BR0103361A (pt)
CA (1) CA2351844A1 (pt)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2399998B (en) * 2001-02-01 2005-04-13 Fujitsu Ltd Communications systems
GB0120535D0 (en) * 2001-08-23 2001-10-17 Roke Manor Research Space-time interleaving transmit diversity
KR100913883B1 (ko) * 2002-04-19 2009-08-26 삼성전자주식회사 스마트 안테나의 출력 신호 왜곡 측정 및 보상 장치 및 방법
AU2002314401A1 (en) * 2002-06-06 2003-12-22 Nokia Corporation System and method for optimized utilization of code resource in communication networks
US7095709B2 (en) 2002-06-24 2006-08-22 Qualcomm, Incorporated Diversity transmission modes for MIMO OFDM communication systems
US8194770B2 (en) 2002-08-27 2012-06-05 Qualcomm Incorporated Coded MIMO systems with selective channel inversion applied per eigenmode
US20040081131A1 (en) 2002-10-25 2004-04-29 Walton Jay Rod OFDM communication system with multiple OFDM symbol sizes
US7324429B2 (en) 2002-10-25 2008-01-29 Qualcomm, Incorporated Multi-mode terminal in a wireless MIMO system
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US8320301B2 (en) 2002-10-25 2012-11-27 Qualcomm Incorporated MIMO WLAN system
US8218609B2 (en) 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
US8570988B2 (en) 2002-10-25 2013-10-29 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8134976B2 (en) 2002-10-25 2012-03-13 Qualcomm Incorporated Channel calibration for a time division duplexed communication system
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US8208364B2 (en) * 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US7002900B2 (en) 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US8170513B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Data detection and demodulation for wireless communication systems
CN100426707C (zh) * 2003-01-03 2008-10-15 华为技术有限公司 一种闭环发射分集***中反馈信号的处理方法及其装置
CN100454795C (zh) * 2003-01-03 2009-01-21 华为技术有限公司 一种自适应空时闭环发射分集方法及其***
US9473269B2 (en) 2003-12-01 2016-10-18 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
EP1730856A4 (en) * 2004-04-02 2012-05-02 Nortel Networks Ltd ROOM TIME TRANSMISSION DIVERSITY SYSTEMS AND METHOD FOR OFDM APPLICATIONS
US7466749B2 (en) 2005-05-12 2008-12-16 Qualcomm Incorporated Rate selection with margin sharing
US8358714B2 (en) 2005-06-16 2013-01-22 Qualcomm Incorporated Coding and modulation for multiple data streams in a communication system
KR100807392B1 (ko) * 2006-08-30 2008-02-28 연세대학교 산학협력단 다중 안테나 통신 시스템을 위한 디지털 전송장치
WO2015090427A1 (en) 2013-12-19 2015-06-25 Telefonaktiebolaget L M Ericsson (Publ) Load balancing of dual-polarized antennas
CN110943770B (zh) * 2018-09-25 2021-08-31 上海华为技术有限公司 多通道波束赋形方法、装置及存储介质

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI108588B (fi) * 1998-12-15 2002-02-15 Nokia Corp Menetelmä ja radiojärjestelmä digitaalisen signaalin siirtoon
US6452916B1 (en) * 1999-01-04 2002-09-17 Lucent Technologies Inc. Space-time spreading method of CDMA wireless communication

Also Published As

Publication number Publication date
EP1182799A2 (en) 2002-02-27
CN1339885A (zh) 2002-03-13
CA2351844A1 (en) 2002-02-22
KR20020015668A (ko) 2002-02-28
JP2002135232A (ja) 2002-05-10
EP1182799A3 (en) 2002-06-26

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Legal Events

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