AR040815A1 - Diversidad de transmision de lazo cerrado de canales fisicos punto-multipunto - Google Patents
Diversidad de transmision de lazo cerrado de canales fisicos punto-multipuntoInfo
- Publication number
- AR040815A1 AR040815A1 AR20030102838A ARP030102838A AR040815A1 AR 040815 A1 AR040815 A1 AR 040815A1 AR 20030102838 A AR20030102838 A AR 20030102838A AR P030102838 A ARP030102838 A AR P030102838A AR 040815 A1 AR040815 A1 AR 040815A1
- Authority
- AR
- Argentina
- Prior art keywords
- multipunto
- punto
- closed loop
- physical channels
- transmission diversity
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title abstract 5
- 230000002596 correlated effect Effects 0.000 abstract 1
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
- 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
- H04B7/0619—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 using feedback from receiving side
- H04B7/0621—Feedback content
- H04B7/0634—Antenna weights or vector/matrix coefficients
-
- 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
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0689—Hybrid systems, i.e. switching and simultaneous transmission using different transmission schemes, at least one of them being a diversity transmission scheme
Abstract
Los datos deben ser transmitidos desde un punto de transmisión a múltiples puntos de recepción en un sistema inalámbrico de comunicación. Un sistema de antenas de transmisión tiene múltiples elementos de antena en el punto de transmisión. La información de canal es medida para cada elemento de antena en cada punto de recepción. Se determinan ajustes de antena utilizando la información de canal medida. La información de canal medida de todos los usuarios es correlacionada para determinar factores de ponderación para cada elemento de antena. Los factores de ponderación para una transmisión punto a multipunto son aplicados antes de ser emitidos por cada elemento de antena.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40219902P | 2002-08-07 | 2002-08-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
AR040815A1 true AR040815A1 (es) | 2005-04-20 |
Family
ID=29780555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AR20030102838A AR040815A1 (es) | 2002-08-07 | 2003-08-07 | Diversidad de transmision de lazo cerrado de canales fisicos punto-multipunto |
Country Status (10)
Country | Link |
---|---|
US (1) | US7181176B2 (es) |
EP (1) | EP1527634A4 (es) |
KR (3) | KR20040014326A (es) |
CN (1) | CN2686249Y (es) |
AR (1) | AR040815A1 (es) |
AU (1) | AU2003261376A1 (es) |
DE (1) | DE20312161U1 (es) |
HK (1) | HK1057970A2 (es) |
TW (4) | TWI339034B (es) |
WO (1) | WO2004016006A1 (es) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101233702B (zh) * | 2005-09-28 | 2012-07-04 | 日本电气株式会社 | 移动设备、移动通信系统以及天线验证方法 |
WO2009025029A1 (ja) * | 2007-08-21 | 2009-02-26 | Fujitsu Limited | 移動局および送信ダイバーシチ制御方法 |
US8559374B2 (en) | 2009-02-20 | 2013-10-15 | Lg Electronics Inc. | Method and apparatus for data communication through a coordinated multi-point transmission |
US11569886B2 (en) * | 2019-04-01 | 2023-01-31 | Qualcomm Incorporated | Network-sensitive transmit diversity scheme |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5812935A (en) * | 1993-04-17 | 1998-09-22 | Hughes Electronics | Cellular system employing base station transmit diversity according to transmission quality level |
US5918154A (en) * | 1995-08-23 | 1999-06-29 | Pcs Wireless, Inc. | Communications systems employing antenna diversity |
FI105740B (fi) | 1995-09-29 | 2000-09-29 | Nokia Mobile Phones Ltd | Toimistoviestintäjärjestelmä |
US6192038B1 (en) | 1995-10-18 | 2001-02-20 | Mdiversity Inc. | Method and apparatus for wireless communication employing aggregation for digital signals |
CA2211619C (en) * | 1995-11-29 | 2002-01-29 | Ntt Mobile Communications Network Inc. | Diversity receiver and its control method |
DE69705356T2 (de) * | 1996-05-17 | 2002-05-02 | Motorola Ltd | Verfahren und Vorrichtung zur Gewichtung eines Uebertragungsweges |
US6330244B1 (en) | 1996-09-05 | 2001-12-11 | Jerome Swartz | System for digital radio communication between a wireless lan and a PBX |
US6463295B1 (en) * | 1996-10-11 | 2002-10-08 | Arraycomm, Inc. | Power control with signal quality estimation for smart antenna communication systems |
US6128276A (en) * | 1997-02-24 | 2000-10-03 | Radix Wireless, Inc. | Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays |
US6128355A (en) * | 1997-05-21 | 2000-10-03 | Telefonaktiebolget Lm Ericsson | Selective diversity combining |
US6259891B1 (en) | 1997-09-04 | 2001-07-10 | Hughes Electronics Corporation | Adapter and method for use in a portable communication signal receiver system |
BR9812816A (pt) * | 1997-09-15 | 2000-08-08 | Adaptive Telecom Inc | Processos para comunicação sem fio, e para eficientemente determinar na estação base um canal espacial da unidade móvel em um sistema de comunicação sem fio, e, estação base de cdma |
US6377812B1 (en) * | 1997-11-20 | 2002-04-23 | University Of Maryland | Combined power control and space-time diversity in mobile cellular communications |
GB2349045A (en) * | 1999-04-16 | 2000-10-18 | Fujitsu Ltd | Base station transmission beam pattern forming; interference reduction |
KR100555986B1 (ko) * | 1999-05-19 | 2006-03-03 | 노키아 네트워크즈 오와이 | 전송 다이버시티 방법 및 시스템 |
JP2001230709A (ja) * | 2000-02-17 | 2001-08-24 | Nec Shizuoka Ltd | ダイバーシチ受信装置 |
CN1244204C (zh) * | 2000-07-14 | 2006-03-01 | 三洋电机株式会社 | 移动通信终端和通信方法 |
KR100493152B1 (ko) | 2000-07-21 | 2005-06-02 | 삼성전자주식회사 | 이동 통신 시스템에서의 전송 안테나 다이버시티 방법 및이를 위한 기지국 장치 및 이동국 장치 |
AU2002215341A1 (en) * | 2000-10-11 | 2002-04-22 | Airnet Communications Corporation | Method and apparatus employing a remote wireless repeater for calibrating a wireless base station having an adaptive antenna array |
US6771706B2 (en) * | 2001-03-23 | 2004-08-03 | Qualcomm Incorporated | Method and apparatus for utilizing channel state information in a wireless communication system |
US6611231B2 (en) * | 2001-04-27 | 2003-08-26 | Vivato, Inc. | Wireless packet switched communication systems and networks using adaptively steered antenna arrays |
US6785341B2 (en) * | 2001-05-11 | 2004-08-31 | Qualcomm Incorporated | Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information |
US6907272B2 (en) * | 2002-07-30 | 2005-06-14 | UNIVERSITé LAVAL | Array receiver with subarray selection |
-
2003
- 2003-08-05 TW TW093110031A patent/TWI339034B/zh not_active IP Right Cessation
- 2003-08-05 TW TW095128939A patent/TWI334739B/zh not_active IP Right Cessation
- 2003-08-05 TW TW092121434A patent/TWI252644B/zh not_active IP Right Cessation
- 2003-08-05 TW TW092214220U patent/TWM240732U/zh not_active IP Right Cessation
- 2003-08-06 WO PCT/US2003/024483 patent/WO2004016006A1/en not_active Application Discontinuation
- 2003-08-06 EP EP03784920A patent/EP1527634A4/en not_active Withdrawn
- 2003-08-06 AU AU2003261376A patent/AU2003261376A1/en not_active Abandoned
- 2003-08-06 DE DE20312161U patent/DE20312161U1/de not_active Expired - Lifetime
- 2003-08-07 US US10/637,023 patent/US7181176B2/en not_active Expired - Fee Related
- 2003-08-07 HK HK03105653A patent/HK1057970A2/xx not_active IP Right Cessation
- 2003-08-07 KR KR1020030054653A patent/KR20040014326A/ko not_active Application Discontinuation
- 2003-08-07 AR AR20030102838A patent/AR040815A1/es active IP Right Grant
- 2003-08-07 CN CNU032048637U patent/CN2686249Y/zh not_active Expired - Lifetime
- 2003-08-11 KR KR20-2003-0025822U patent/KR200331916Y1/ko not_active IP Right Cessation
- 2003-10-23 KR KR1020030074319A patent/KR20040014373A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
TWI339034B (en) | 2011-03-11 |
DE20312161U1 (de) | 2003-12-11 |
US20040097200A1 (en) | 2004-05-20 |
TW200509707A (en) | 2005-03-01 |
CN2686249Y (zh) | 2005-03-16 |
TW200412743A (en) | 2004-07-16 |
EP1527634A1 (en) | 2005-05-04 |
KR20040014373A (ko) | 2004-02-14 |
WO2004016006A1 (en) | 2004-02-19 |
US7181176B2 (en) | 2007-02-20 |
TWI252644B (en) | 2006-04-01 |
HK1057970A2 (en) | 2004-04-08 |
EP1527634A4 (en) | 2010-08-25 |
TW200723905A (en) | 2007-06-16 |
TWI334739B (en) | 2010-12-11 |
AU2003261376A1 (en) | 2004-02-25 |
KR200331916Y1 (ko) | 2003-10-30 |
KR20040014326A (ko) | 2004-02-14 |
TWM240732U (en) | 2004-08-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FA | Abandonment or withdrawal | ||
FG | Grant, registration | ||
FG | Grant, registration |