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-tempoInfo
- 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
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.
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)
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)
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 |
-
2001
- 2001-06-25 EP EP01305500A patent/EP1182799A3/en not_active Ceased
- 2001-06-28 CA CA002351844A patent/CA2351844A1/en not_active Abandoned
- 2001-08-15 BR BR0103361-1A patent/BR0103361A/pt not_active Application Discontinuation
- 2001-08-21 CN CN01133989A patent/CN1339885A/zh active Pending
- 2001-08-21 JP JP2001250224A patent/JP2002135232A/ja active Pending
- 2001-08-22 KR KR1020010050689A patent/KR20020015668A/ko not_active Application Discontinuation
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 |