ES2125302T3 - Metodo y dispositivo para proporcionar diversidad de antenas. - Google Patents

Metodo y dispositivo para proporcionar diversidad de antenas.

Info

Publication number
ES2125302T3
ES2125302T3 ES93302273T ES93302273T ES2125302T3 ES 2125302 T3 ES2125302 T3 ES 2125302T3 ES 93302273 T ES93302273 T ES 93302273T ES 93302273 T ES93302273 T ES 93302273T ES 2125302 T3 ES2125302 T3 ES 2125302T3
Authority
ES
Spain
Prior art keywords
antennas
access code
sequence
symbols
received
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
ES93302273T
Other languages
English (en)
Inventor
Nambirajan Seshadri
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 ES2125302T3 publication Critical patent/ES2125302T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • H04B7/0602—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 antenna switching
    • H04B7/0604—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 antenna switching with predefined switching scheme
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

SE DESCRIBE UN METODO Y UN APARATO QUE PROPORCIONAN DIVERSIDAD DE ANTENAS. UN CONJUNTO DE BIT DE UNA SEÑAL DIGITAL (101,104) SE USA PARA GENERAR UN CODIGO DE ACCESO (106) DE N SIMBOLOS. LOS CODIGOS DE ACCESO (106) SE DISPONEN CONFORME A UN CODIGO DE CANAL QUE TIENE UNA DISTANCIA MINIMA HAMMING (DISTANCIA DE HAMMING; NUMERO DE BIT DIFERENTES DE DOS CARACTERES CONSECUTIVOS), DMIN, DONDE 2<=DM<=N SEÑALES, QUE REPRESENTAN N SIMBOLOS DE UN CODIGO DE ACCESO, SE TRANSMITEN CON N ANTENAS DIFERENTES (116A, 116B). LAS N SEÑALES TRANSMITIDAS SE RECIBEN Y SE AISLAN. SE FORMA UNA SECUENCIA DE N SIMBOLOS RECIBIDOS, SE COMPARA CON UNO O MAS CODIGOS DE ACCESO PARA ASOCIAR LA SECUENCIA CON UN CODIGO DE ACCESO. SE GENERA UN CONJUNTO DE BIT, BASADO EN UN CODIGO DE ACCESO ASOCIADO CON LA SECUENCIA RECIBIDA.
ES93302273T 1992-03-31 1993-03-25 Metodo y dispositivo para proporcionar diversidad de antenas. Expired - Lifetime ES2125302T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/860,830 US5479448A (en) 1992-03-31 1992-03-31 Method and apparatus for providing antenna diversity

Publications (1)

Publication Number Publication Date
ES2125302T3 true ES2125302T3 (es) 1999-03-01

Family

ID=25334124

Family Applications (1)

Application Number Title Priority Date Filing Date
ES93302273T Expired - Lifetime ES2125302T3 (es) 1992-03-31 1993-03-25 Metodo y dispositivo para proporcionar diversidad de antenas.

Country Status (6)

Country Link
US (1) US5479448A (es)
EP (1) EP0566257B1 (es)
JP (1) JP3096538B2 (es)
CA (1) CA2090513C (es)
DE (1) DE69322119T2 (es)
ES (1) ES2125302T3 (es)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2992670B2 (ja) * 1994-01-31 1999-12-20 松下電器産業株式会社 移動体通信装置
US5614914A (en) 1994-09-06 1997-03-25 Interdigital Technology Corporation Wireless telephone distribution system with time and space diversity transmission for determining receiver location
JP2746190B2 (ja) * 1995-04-27 1998-04-28 住友電気工業株式会社 スペクトラム拡散通信装置
JPH08321785A (ja) * 1995-05-24 1996-12-03 Sony Corp 送信機，受信機，送信方法，受信方法及び伝送方法
EP2280494A3 (en) 1996-04-26 2011-12-07 AT & T Corp. Method and apparatus for data transmission using multiple transmit antennas
US6097771A (en) * 1996-07-01 2000-08-01 Lucent Technologies Inc. Wireless communications system having a layered space-time architecture employing multi-element antennas
US5910969A (en) * 1996-11-05 1999-06-08 Lucent Technologies Inc. Method of detecting DC-free sequences
FI108762B (fi) * 1996-12-10 2002-03-15 Nokia Corp Menetelmä toisteen aikaansaamiseksi ja tukiasemalaitteisto
US6173005B1 (en) * 1997-09-04 2001-01-09 Motorola, Inc. Apparatus and method for transmitting signals in a communication system
KR100374032B1 (ko) * 1997-09-11 2003-05-22 삼성전자주식회사 이동통신시스템의코딩및주파수다이버시티구현방법및장치
US6185258B1 (en) 1997-09-16 2001-02-06 At&T Wireless Services Inc. Transmitter diversity technique for wireless communications
WO1999023766A2 (en) * 1997-10-31 1999-05-14 At & T Wireless Services, Inc. Maximum likelihood detection of concatenated space-time codes for wireless applications with transmitter diversity
US6501803B1 (en) 1998-10-05 2002-12-31 At&T Wireless Services, Inc. Low complexity maximum likelihood detecting of concatenated space codes for wireless applications
US6088408A (en) 1998-11-06 2000-07-11 At & T Corp. Decoding for generalized orthogonal designs for space-time codes for wireless communication
US6795508B1 (en) * 1997-12-02 2004-09-21 Qualcomm, Incorporated Method and apparatus for obtaining transmit diversity using switched antennas
US6188736B1 (en) 1997-12-23 2001-02-13 At&T Wireless Svcs. Inc. Near-optimal low-complexity decoding of space-time codes for fixed wireless applications
WO1999045657A1 (en) 1998-03-03 1999-09-10 At & T Corp. Decoding of space-time coded signals for wireless communication
US6317466B1 (en) * 1998-04-15 2001-11-13 Lucent Technologies Inc. Wireless communications system having a space-time architecture employing multi-element antennas at both the transmitter and receiver
US6198775B1 (en) * 1998-04-28 2001-03-06 Ericsson Inc. Transmit diversity method, systems, and terminals using scramble coding
FI981575A7 (fi) * 1998-07-08 2000-01-09 Nokia Corp Menetelmä ja järjestelmä digitaalisen signaalin siirtämiseksi
US6470055B1 (en) 1998-08-10 2002-10-22 Kamilo Feher Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDN, and other systems
US7079584B2 (en) 1998-08-10 2006-07-18 Kamilo Feher OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation
US7415066B2 (en) 1998-08-10 2008-08-19 Kamilo Feher Mis-matched modulation-demodulation format selectable filters
US7548787B2 (en) 2005-08-03 2009-06-16 Kamilo Feher Medical diagnostic and communication system
US6757334B1 (en) * 1998-08-10 2004-06-29 Kamilo Feher Bit rate agile third-generation wireless CDMA, GSM, TDMA and OFDM system
US7593481B2 (en) 1998-08-31 2009-09-22 Kamilo Feher CDMA, W-CDMA, 3rd generation interoperable modem format selectable (MFS) systems with GMSK modulated systems
US8050345B1 (en) 1999-08-09 2011-11-01 Kamilo Feher QAM and GMSK systems
US6366619B1 (en) 1998-08-28 2002-04-02 Sicom, Inc. Constrained-envelope transmitter and method therefor
US6104761A (en) 1998-08-28 2000-08-15 Sicom, Inc. Constrained-envelope digital-communications transmission system and method therefor
EP1110356A4 (en) 1998-08-31 2003-05-28 Kamilo Feher MODULATION BY FEHER HANDLING AND TRANSCEIVERS WITH CLOCK SIGNAL CONFORMERS
US6459740B1 (en) 1998-09-17 2002-10-01 At&T Wireless Services, Inc. Maximum ratio transmission
US6584593B1 (en) * 1998-10-02 2003-06-24 At&T Corp. Concatenation of turbo-TCM with space-block coding
US6128330A (en) 1998-11-24 2000-10-03 Linex Technology, Inc. Efficient shadow reduction antenna system for spread spectrum
US6247158B1 (en) * 1998-11-30 2001-06-12 Itt Manufacturing Enterprises, Inc. Digital broadcasting system and method
EP1073214B1 (en) * 1999-02-16 2008-12-17 Mitsubishi Denki Kabushiki Kaisha Radio communication system, transmitter and receiver
US9373251B2 (en) 1999-08-09 2016-06-21 Kamilo Feher Base station devices and automobile wireless communication systems
US9813270B2 (en) 1999-08-09 2017-11-07 Kamilo Feher Heart rate sensor and medical diagnostics wireless devices
US7260369B2 (en) 2005-08-03 2007-08-21 Kamilo Feher Location finder, tracker, communication and remote control system
US9307407B1 (en) 1999-08-09 2016-04-05 Kamilo Feher DNA and fingerprint authentication of mobile devices
US6700926B1 (en) 1999-12-10 2004-03-02 Nokia Corporation Method and apparatus providing bit-to-symbol mapping for space-time codes
US6693976B1 (en) * 2000-03-21 2004-02-17 Lucent Technologies Inc. Method of wireless communication using structured unitary space-time signal constellations
US6922447B1 (en) * 2000-05-17 2005-07-26 Nokia Corporation Apparatus, and associated method, for forming a signal exhibiting space-time redundancy
US6442214B1 (en) 2000-05-19 2002-08-27 Iospan Wireless, Inc. Diversity transmitter based on linear transform processing of transmitted information
WO2001091318A1 (en) * 2000-05-25 2001-11-29 Samsung Electronics Co., Ltd Apparatus and method for transmission diversity using more than two antennas
US7020175B2 (en) * 2000-09-21 2006-03-28 Motorola, Inc. MMSE reception of DS-CDMA with transmit diversity
US7236508B2 (en) * 2001-02-05 2007-06-26 The Directv Group, Inc. Application of complex codes to maximize feeder link utilization
JP2002261667A (ja) * 2001-02-28 2002-09-13 Pioneer Electronic Corp 受信装置
FI20010963A0 (fi) 2001-05-08 2001-05-08 Nokia Corp Adaptiivinen symbolikuvaus matkaviestinjärjestelmässä
RU2208911C2 (ru) * 2001-05-14 2003-07-20 Гармонов Александр Васильевич Способ разнесенной передачи сигнала и устройство для его реализации
US6999472B2 (en) * 2001-05-30 2006-02-14 Nokia Mobile Phones Limited Apparatus, and associated method, for space-time encoding, and decoding, data at a selected code rate
US20030069043A1 (en) * 2001-10-10 2003-04-10 Pallav Chhaochharia Methods and devices for wirelessly transmitting data in dependence on location
US7126956B2 (en) * 2002-03-05 2006-10-24 Applied Micro Circuits Corporation System to provide fractional bandwidth data communications services
JP4194999B2 (ja) * 2002-04-30 2008-12-10 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 後方互換的ｄｖｂ−ｓ規格送信システム
JP2004175052A (ja) * 2002-11-29 2004-06-24 Sony Corp インクジェット被記録媒体、インクジェット画像形成方法及び印画物
US8064528B2 (en) 2003-05-21 2011-11-22 Regents Of The University Of Minnesota Estimating frequency-offsets and multi-antenna channels in MIMO OFDM systems
KR100584329B1 (ko) * 2003-09-09 2006-05-26 삼성전자주식회사 비동기 광대역 코드분할 다중접속 통신 시스템에서 프레임기준신호의 위상 회전에 따른 왜곡 보상 장치 및 방법
EP1779547A4 (en) * 2004-08-16 2011-09-07 Beceem Communications Inc METHOD AND SYSTEM FOR MAXIMUM TRANSMISSION DIVERSITY
US7477698B2 (en) * 2004-08-16 2009-01-13 Beceem Communications Inc. Method and system for rate-2 transmission
US7586997B2 (en) * 2004-08-16 2009-09-08 Beceem Communications Inc. Method and system for maximum transmit diversity
US7359449B2 (en) 2004-10-05 2008-04-15 Kamilo Feher Data communication for wired and wireless communication
US10009956B1 (en) 2017-09-02 2018-06-26 Kamilo Feher OFDM, 3G and 4G cellular multimode systems and wireless mobile networks
US7280810B2 (en) 2005-08-03 2007-10-09 Kamilo Feher Multimode communication system
US7283069B2 (en) * 2006-03-16 2007-10-16 Harris Corporation Method for encoded or encrypted bit stream synchronization
US8094751B2 (en) * 2009-07-28 2012-01-10 Ehsan Nekoui System and method for encoding and decoding of space-time block codes in data communication
US9553451B2 (en) 2011-12-28 2017-01-24 Lutron Electronics Co., Inc. Load control system having independently-controlled units responsive to a broadcast controller
US9203519B2 (en) * 2012-10-04 2015-12-01 Nec Laboratories America, Inc. Pair-wise symbol correlated high receiver sensitivity modulation format
US11235443B2 (en) 2013-03-26 2022-02-01 Milwaukee Electric Tool Corporation Pipe wrench
CN112188946A (zh) 2018-03-30 2021-01-05 米沃奇电动工具公司 管扳手
EP4192651A4 (en) 2020-08-04 2024-12-11 Milwaukee Electric Tool Corporation EXTENDABLE KEY

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3267380A (en) * 1962-10-19 1966-08-16 Sichak Associates Diversity phase control system using subcarrier identifying signals
US3348150A (en) * 1964-07-27 1967-10-17 Bell Telephone Labor Inc Diversity transmission system
US3662268A (en) * 1970-11-17 1972-05-09 Bell Telephone Labor Inc Diversity communication system using distinct spectral arrangements for each branch
US3717814A (en) * 1971-09-23 1973-02-20 Bell Telephone Labor Inc Cophasing diversity communication system with pilot feedback
JPS5147313A (es) * 1974-10-21 1976-04-22 Nippon Telegraph & Telephone
DE2534888C2 (de) * 1975-08-05 1983-12-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Antennendiversityverfahren und Anordnung zur Durchführung des Verfahrens
US4280222A (en) * 1980-01-14 1981-07-21 The Singer Company Receiver and correlator switching method
US4383332A (en) * 1980-11-21 1983-05-10 Bell Telephone Laboratories, Incorporated High capacity digital mobile radio system
JPS5815341A (ja) * 1981-07-22 1983-01-28 Nec Corp 送信ダイバーシティ信号の送信方法および装置
US4513412A (en) * 1983-04-25 1985-04-23 At&T Bell Laboratories Time division adaptive retransmission technique for portable radio telephones
DE3517247A1 (de) * 1985-05-13 1986-11-13 Gerhard Prof. Dr.-Ing. 8012 Ottobrunn Flachenecker Antennendiversity-empfangsanlage zur elimination von empfangsstoerungen
US4881241A (en) * 1988-02-24 1989-11-14 Centre National D'etudes Des Telecommunications Method and installation for digital communication, particularly between and toward moving vehicles
JPH0338932A (ja) * 1989-07-06 1991-02-20 Oki Electric Ind Co Ltd スペースダイバーシチ方式
US5029185A (en) * 1989-07-28 1991-07-02 At&T Bell Laboratories Coded modulation for mobile radio
US5134633A (en) * 1990-11-30 1992-07-28 At&T Bell Laboratories Digital communications synchronization scheme
US5170413A (en) * 1990-12-24 1992-12-08 Motorola, Inc. Control strategy for reuse system assignments and handoff
US5305353A (en) * 1992-05-29 1994-04-19 At&T Bell Laboratories Method and apparatus for providing time diversity

Also Published As

Publication number Publication date
EP0566257B1 (en) 1998-11-18
CA2090513A1 (en) 1993-10-01
US5479448A (en) 1995-12-26
DE69322119T2 (de) 1999-05-27
EP0566257A1 (en) 1993-10-20
DE69322119D1 (de) 1998-12-24
JP3096538B2 (ja) 2000-10-10
JPH0621856A (ja) 1994-01-28
CA2090513C (en) 1998-02-03

Similar Documents

Publication Publication Date Title
ES2125302T3 (es) Metodo y dispositivo para proporcionar diversidad de antenas.
ES8202462A1 (es) Un aparato de comunicacion digital.
MX9303899A (es) Aparato para descodificar una corriente de señales codificadas.
SE8302763D0 (sv) Digitaltransmissionssystem
ES2117560A1 (es) Decodificador y metodo para el mismo.
KR880009502A (ko) 정보 전송 방법 및 그 장치
GB2075309B (en) Processing binary data framing
ES8800542A1 (es) Aparato para decodificar una informacion numerica de codigo nrzi
FR2093539A5 (es)
IT7829077A0 (it) Dispositivo per diminuire la ridondanza di sequenze di caratteri binari, che descrivono caratteri o modelli grafici.
ES8402483A1 (es) Metodo y aparato para proporcionar cancelacion adaptable de ecos en un sistema de telecomunicacion.
DK616187D0 (da) Kommunikationssystem med tidsmultipleks for effektiv udnyttelse af frekvensbaand
BR0010340A (pt) Transmissor e receptor de sinais de rádio, dispositivo e processo de comunicação e processo de receber um sinal de rádio a partir de uma estação base
KR920005112A (ko) 디지틀신호기록방법
SE8004301L (sv) Digitalt transmissionsutrustning med kodnings- och avkodningsutrustning
GB929336A (en) A.c. telegraph system using a limited frequency band
FR2410921A1 (fr) Systeme de brouillage et de debrouillage de signaux numeriques
IT1058356B (it) Sistema di trasmissione di informazioni numeriche particolarmente utile per segnali video e.o telefonici
DK0568532T3 (da) Fremgangsmåde til transmission af digitaliserede, blokkodede lydsignaler under anvendelse af skalafaktorer
ES539939A0 (es) Procedimiento para la transmision de signos mediante palabras de clave de un alfabeto de telegrafo.
JPS5389608A (en) Multilevel code transmission system
GB1149103A (en) Process and device for automatically transmitting morse signals
ES2089113T3 (es) Procedimiento para codificar una señal analogica que tiene naturaleza repetitiva y dispositivo para codificar por medio de dicho procedimiento.
JPS647831A (en) Digital signal transmission method
SU1399752A1 (ru) Устройство св зи ЭВМ

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 566257

Country of ref document: ES