BR9904592A - Cancelador de interferência para multi-usuário - Google Patents
Cancelador de interferência para multi-usuárioInfo
- Publication number
- BR9904592A BR9904592A BR9904592A BR9904592A BR9904592A BR 9904592 A BR9904592 A BR 9904592A BR 9904592 A BR9904592 A BR 9904592A BR 9904592 A BR9904592 A BR 9904592A BR 9904592 A BR9904592 A BR 9904592A
- Authority
- BR
- Brazil
- Prior art keywords
- signal
- stage
- interference
- signals
- amplitude
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
- H04B1/7107—Subtractive interference cancellation
- H04B1/71075—Parallel interference cancellation
Abstract
"CANCELADOR DE INTERFERêNCIA PARA MULTI-USUáRIO". Em um particular estágio, dentre os estágios para cancelar interferência do cancelador de interferência para multi-usuário do tipo de processamento paralelo, as unidades para estimar interferência (IEUs) reproduzem os sinais replicadores de símbolo a partir do sinal de entrada do estágio, e também produzem os sinais de difusão de local. Os sinais de difusão de local tem informação de resultado da reprodução somente nas IEUs, respectivamente, e ainda não foram submetidos à filtragem. Tais sinais de difusão de local são multiplexados no sinal multiplexado, que então é submetido à limitação de amplitude, para ser o sinal limitado de amplitude. Depois do que, o sinal limitado de amplitude é filtrado pelo filtro, para dar entrada no subtraidor. O substraidor subtrai o sinal filtrado a partir do sinal de entrada deste estágio, e através do que, produz a saída deste estágio.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24361798A JP3031348B2 (ja) | 1998-08-28 | 1998-08-28 | Cdmaマルチユーザ型干渉キャンセラ |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9904592A true BR9904592A (pt) | 2000-09-19 |
Family
ID=17106495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9904592A BR9904592A (pt) | 1998-08-28 | 1999-08-30 | Cancelador de interferência para multi-usuário |
Country Status (4)
Country | Link |
---|---|
US (1) | US6480482B1 (pt) |
EP (1) | EP0982872B1 (pt) |
JP (1) | JP3031348B2 (pt) |
BR (1) | BR9904592A (pt) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001203619A (ja) * | 2000-01-19 | 2001-07-27 | Matsushita Electric Ind Co Ltd | 無線基地局装置及び無線通信方法 |
US7061891B1 (en) | 2001-02-02 | 2006-06-13 | Science Applications International Corporation | Method and system for a remote downlink transmitter for increasing the capacity and downlink capability of a multiple access interference limited spread-spectrum wireless network |
EP1386406A4 (en) * | 2001-03-30 | 2009-06-03 | Science Applic Int Corp | MULTI-STAGE TRANSMISSION RECEIVER WITH CODE DIVISION MULTIPLE ACCESS |
KR100395497B1 (ko) * | 2001-06-08 | 2003-08-25 | 한국전자통신연구원 | 씨디엠에이 수신기의 병렬형 간섭 제거 방법 |
US7006461B2 (en) * | 2001-09-17 | 2006-02-28 | Science Applications International Corporation | Method and system for a channel selective repeater with capacity enhancement in a spread-spectrum wireless network |
FI20020794A0 (fi) | 2002-04-24 | 2002-04-24 | Nokia Corp | Häiriönpoistomenetelmä radiojärjestelmän vastaanottimessa |
CN100373836C (zh) * | 2002-05-30 | 2008-03-05 | 华为技术有限公司 | 一种并行干扰对消方法及其装置 |
US9042429B2 (en) * | 2013-06-27 | 2015-05-26 | Intel Mobile Communications GmbH | Interference cancellation radio receiver |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5553062A (en) * | 1993-04-22 | 1996-09-03 | Interdigital Communication Corporation | Spread spectrum CDMA interference canceler system and method |
US5724378A (en) * | 1994-12-13 | 1998-03-03 | Nit Mobile Communications Network, Inc. | CDMA multiuser receiver and method |
KR100212306B1 (ko) * | 1995-06-13 | 1999-08-02 | 다치카와 게이지 | 코드 분할 다중 접속(cdma) 복조 장치 |
JP2737776B2 (ja) | 1996-03-29 | 1998-04-08 | 日本電気株式会社 | Ds−cdmaマルチユーザーシリアル干渉キャンセラ装置 |
JP2737775B2 (ja) | 1996-03-29 | 1998-04-08 | 日本電気株式会社 | Ds−cdmaマルチユーザーシリアル干渉キャンセラの干渉レプリカ信号の伝送方式 |
US5629929A (en) * | 1996-06-07 | 1997-05-13 | Motorola, Inc. | Apparatus for rapid interference cancellation and despreading of a CDMA waveform |
JP2746261B2 (ja) | 1996-06-10 | 1998-05-06 | 日本電気株式会社 | Ds−cdma干渉キャンセル装置 |
JP2798128B2 (ja) * | 1996-08-06 | 1998-09-17 | 日本電気株式会社 | Cdmaマルチユーザ受信装置 |
JPH10117180A (ja) | 1996-10-09 | 1998-05-06 | Oki Electric Ind Co Ltd | 符号分割多元接続復調装置 |
JPH10190495A (ja) * | 1996-12-20 | 1998-07-21 | Fujitsu Ltd | 干渉キャンセラ |
US6049607A (en) * | 1998-09-18 | 2000-04-11 | Lamar Signal Processing | Interference canceling method and apparatus |
-
1998
- 1998-08-28 JP JP24361798A patent/JP3031348B2/ja not_active Expired - Fee Related
-
1999
- 1999-08-27 EP EP19990306865 patent/EP0982872B1/en not_active Expired - Lifetime
- 1999-08-30 BR BR9904592A patent/BR9904592A/pt not_active IP Right Cessation
- 1999-08-30 US US09/386,204 patent/US6480482B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3031348B2 (ja) | 2000-04-10 |
EP0982872A2 (en) | 2000-03-01 |
EP0982872B1 (en) | 2006-02-15 |
JP2000078108A (ja) | 2000-03-14 |
EP0982872A3 (en) | 2000-09-20 |
US6480482B1 (en) | 2002-11-12 |
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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 10A. ANUIDADE. |
|
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 DA RPI 2047 DE 30/03/2010. |