ES2143491T3 - Precodificacion de secuencias de signatura para sistemas cdma. - Google Patents

Precodificacion de secuencias de signatura para sistemas cdma.

Info

Publication number
ES2143491T3
ES2143491T3 ES93306640T ES93306640T ES2143491T3 ES 2143491 T3 ES2143491 T3 ES 2143491T3 ES 93306640 T ES93306640 T ES 93306640T ES 93306640 T ES93306640 T ES 93306640T ES 2143491 T3 ES2143491 T3 ES 2143491T3
Authority
ES
Spain
Prior art keywords
receivers
sequences
mai
experienced
signature
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES93306640T
Other languages
English (en)
Inventor
Vijitha Weerackody
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of ES2143491T3 publication Critical patent/ES2143491T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023—Interference mitigation or co-ordination
    • H04J11/0026—Interference mitigation or co-ordination of multi-user interference
    • H04J11/0036—Interference mitigation or co-ordination of multi-user interference at the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

SE PRESENTA UNA TECNICA PARA REDUCIR INTERFERENCIA DE ACCESO MULTIPLE (MAI) EXPERIMENTADAS POR RECEPTORES DE TRANSMISION A PARTIR DE TRANSMISORES (10), POR EJEMPLO, UNA ESTACION DE BASE, EN UN SISTEMA DE COMUNICACION DIRECTA DE ACCESO MULTIPLE DE DIVISION DE CODIGO EN SECUENCIAS, POR EJEMPLO UN SISTEMA DE RADIO CELULAR. LA TECNICA SE REFIERE A LA CODIFICACION DE SECUENCIAS DE SIGNATURA DE USUARIO (A1(T) IFUNDIR (EN 5) SEÑALES DE INFORMACION (BI(T) TIR. EL USO DE SECUENCIAS DE SIGNATURA PRECODIFICADAS (C1(T) CK(T) REDUCE SIGNIFICATIVAMENTE EL NIVEL MEDIO DE MAI EXPERIMENTADAS POR LOS RECEPTORES. AL RECIBIR LA RECEPCION DE LA DIFUSION DE LAS SEÑALES RECIBIDAS POR RECEPTORES SE PUEDE LLEVAR A CABO CON LAS SECUENCIAS DE SIGNATURA ORIGINALES (POR EJEMPLO NO PRECODIFICADAS) (A1(T) DETERMINAR UN JUEGO DE SECUENCIAS TANTO PARA EL TRANSMISOR COMO PARA EL RECEPTOR DESDE UN JUEGO MAS PEQUEÑO DE SECUENCIAS ORTOGONALES.
ES93306640T 1992-08-31 1993-08-20 Precodificacion de secuencias de signatura para sistemas cdma. Expired - Lifetime ES2143491T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/938,072 US5461610A (en) 1992-08-31 1992-08-31 Precoding of signature sequences for CDMA systems

Publications (1)

Publication Number Publication Date
ES2143491T3 true ES2143491T3 (es) 2000-05-16

Family

ID=25470823

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93306640T Expired - Lifetime ES2143491T3 (es) 1992-08-31 1993-08-20 Precodificacion de secuencias de signatura para sistemas cdma.

Country Status (6)

Country Link
US (1) US5461610A (es)
EP (1) EP0586159B1 (es)
JP (1) JP3406355B2 (es)
CA (1) CA2100847C (es)
DE (1) DE69327494T2 (es)
ES (1) ES2143491T3 (es)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5793758A (en) * 1994-04-06 1998-08-11 U S West, Inc. Method and system for wireless communication of a datagram
JP2705623B2 (ja) * 1995-03-22 1998-01-28 日本電気株式会社 ダイバーシチ送受信方法及び送受信機
US6044083A (en) * 1995-10-20 2000-03-28 Zenith Electronics Corporation Synchronous code division multiple access communication system
KR100186627B1 (ko) * 1996-09-21 1999-05-15 삼성전자 주식회사 베이스 밴드 인터리버
US6112095A (en) * 1997-01-08 2000-08-29 Us Wireless Corporation Signature matching for location determination in wireless communication systems
US5940429A (en) * 1997-02-25 1999-08-17 Solana Technology Development Corporation Cross-term compensation power adjustment of embedded auxiliary data in a primary data signal
JP2914442B2 (ja) * 1997-06-25 1999-06-28 日本電気株式会社 符号多重化通信装置
US6061326A (en) * 1997-10-14 2000-05-09 At&T Corp Wideband communication system for the home
CN1148989C (zh) 1999-05-31 2004-05-05 韩国电子通信研究院 使用正交可变扩展系数码来调制数据消息的装置和方法
US7035238B1 (en) * 1999-06-04 2006-04-25 Lucent Technologies Inc. Code assignment in a CDMA wireless system
US6483470B1 (en) 1999-09-08 2002-11-19 Qwest Communications International, Inc. Power supply for a light pole mounted wireless antenna
US6987769B1 (en) 1999-09-08 2006-01-17 Qwest Communications International Inc. System and method for dynamic distributed communication
US7561895B1 (en) 1999-09-08 2009-07-14 Qwest Communications International, Inc. Reverse sectorization wireless communication
US6831902B1 (en) 1999-09-08 2004-12-14 Qwest Communications International, Inc. Routing information packets in a distributed network
US8005077B1 (en) 1999-09-08 2011-08-23 Qwest Communications International Inc. Distributively routed VDSL and high-speed information packets
US7388846B1 (en) 1999-09-08 2008-06-17 Qwest Communications International Inc. Cellularized packetized voice and data
US7236508B2 (en) * 2001-02-05 2007-06-26 The Directv Group, Inc. Application of complex codes to maximize feeder link utilization
KR100475037B1 (ko) * 2002-10-17 2005-03-10 한국과학기술원 Ｐｒ-ｑｍｆ 계수를 이용한 수열 구현방법, 최적화방법 및그 수열을 ｃｄｍａ 시스템에 적용하는 방법
DE10333141B4 (de) * 2003-07-16 2005-09-22 Technische Universität Dresden Verfahren und Anordnung zum Senden von CDMA-Signalen für mehrere Nutzer
CN102299886B (zh) 2004-12-23 2017-09-12 韩国电子通信研究院 用于在无线通信系统中生成和发送帧的装置及方法
JP4796626B2 (ja) 2005-07-01 2011-10-19 ヨーロピアン スペース エージェンシー 衛星ナビゲーション・システムのための拡散符号
US8437299B2 (en) 2010-08-17 2013-05-07 Qualcomm Incorporated Radio channel aggregation and segmentation

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460992A (en) * 1982-11-04 1984-07-17 The United States Of America As Represented By The Secretary Of The Army Orthogonal CDMA system utilizing direct sequence pseudo noise codes
US4542515A (en) * 1983-11-14 1985-09-17 The United States Of America As Represented By The Secretary Of The Army Multilevel mate pair code compressor for codes expanded by the process of butting
US4561089A (en) * 1984-03-23 1985-12-24 Sangamo Weston, Inc. Correlation detectors for use in direct sequence spread spectrum signal receiver
US4601047A (en) * 1984-03-23 1986-07-15 Sangamo Weston, Inc. Code division multiplexer using direct sequence spread spectrum signal processing
EP0216974A1 (en) * 1985-09-25 1987-04-08 Sangamo Weston, Inc. Code division multiplexer using direct sequence spread spectrum signal processing.
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US4922506A (en) * 1988-01-11 1990-05-01 Sicom Corporation Compensating for distortion in a communication channel
US4930140A (en) * 1989-01-13 1990-05-29 Agilis Corporation Code division multiplex system using selectable length spreading code sequences
US5029180A (en) * 1989-03-23 1991-07-02 Echelon Systems Corporation Transceiver providing selectable frequencies and spreading sequences
US5081645A (en) * 1990-08-06 1992-01-14 Aware, Inc. Novel spread spectrum codec apparatus and method
US5099493A (en) * 1990-08-27 1992-03-24 Zeger-Abrams Incorporated Multiple signal receiver for direct sequence, code division multiple access, spread spectrum signals
JPH0779281B2 (ja) * 1990-09-21 1995-08-23 日本ビクター株式会社 スペクトル拡散変調復調装置
US5136612A (en) * 1990-12-31 1992-08-04 At&T Bell Laboratories Method and apparatus for reducing effects of multiple access interference in a radio receiver in a code division multiple access communication system

Also Published As

Publication number Publication date
CA2100847A1 (en) 1994-03-01
EP0586159A2 (en) 1994-03-09
JP3406355B2 (ja) 2003-05-12
JPH06177860A (ja) 1994-06-24
EP0586159A3 (es) 1994-04-27
DE69327494D1 (de) 2000-02-10
CA2100847C (en) 1997-12-23
US5461610A (en) 1995-10-24
DE69327494T2 (de) 2000-07-27
EP0586159B1 (en) 2000-01-05

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