ES2095302T3 - Sistema de comunicaciones de espectro de propagacion de secuencia directa (dss) con modulacion de frecuencia utilizado para conseguir propagacion de espectros. - Google Patents

Sistema de comunicaciones de espectro de propagacion de secuencia directa (dss) con modulacion de frecuencia utilizado para conseguir propagacion de espectros.

Info

Publication number
ES2095302T3
ES2095302T3 ES91309882T ES91309882T ES2095302T3 ES 2095302 T3 ES2095302 T3 ES 2095302T3 ES 91309882 T ES91309882 T ES 91309882T ES 91309882 T ES91309882 T ES 91309882T ES 2095302 T3 ES2095302 T3 ES 2095302T3
Authority
ES
Spain
Prior art keywords
signal
transmission
direct sequence
broadcast
achieve
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
ES91309882T
Other languages
English (en)
Inventor
Giovanni Vannucci
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 ES2095302T3 publication Critical patent/ES2095302T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Landscapes

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

Abstract

LA COMPLEJIDAD DEL HARDWARE DE LOS EQUIPOS DE TRANSMISION Y RECEPCION EN SISTEMA DE TRANSMISION POR RADIO CELULAR EN CDMA (ACCESO POR DIVISION DE CODIGO MULTIPLE) SE REDUCE MEDIANTE EL USO DE TECNICAS DE FRECUENCIA MODULADA FM PARA CONSEGUIR UNA AMPLITUD ESPECTRAL EN COMBINACION CON UNA MODULACION DE SEÑAL. LA TECNICA DE AMPLITUD ESPECTRAL DE UN SISTEMA DE COMUNICACIONES TELEFONICA POR RADIO CELULAR CDMA SE GENERALIZA EXTENDIENDO LA AMPLITUD DE VALORES ASIGNADOS A LA AMPLITUD DE ONDA DE LA SEÑAL CODIGO PARA INCLUIR NUMEROS COMPLEJOS DE MAGNITUD UNITARIA. ESTO PERMITE LA INCORPORACION DE (EN 307) UNA VERSION DE BANDA BASE (A 301) DE LA SEÑAL DE INFORMACION Y DE LA AMPLITUD DE LAS FORMAS DE ONDA (DESDE 303, 305) EN VEZ DE LA MULTIPLICACION CONVENCIONAL DE LAS DOS SEÑALES EN LOS SISTEMAS DE COMUNICACION DSSS (ESPECTRO DE AMPLITUD DE SECUENCIA DIRECTA) EXISTENTES. LA SEÑAL RESULTANTE ES UTILIZADA PARA CONTROLAR UN OSCILADOR DE VOLTAJE CONTROLADO (309) PARA PRODUCIR (A 312) UNA SEÑAL DE TRANSMISION DE ESPECTRO DE AMPLITUD DE FRECUENCIA MODULADA. ESTA DISPOSICION PERMITE IMPLEMENTACIONES MAS EFICIENTES DE LOS EQUIPOS DE TRANSMISION Y RECEPCION.
ES91309882T 1990-11-02 1991-10-25 Sistema de comunicaciones de espectro de propagacion de secuencia directa (dss) con modulacion de frecuencia utilizado para conseguir propagacion de espectros. Expired - Lifetime ES2095302T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/608,418 US5150377A (en) 1990-11-02 1990-11-02 Direct sequence spread spectrum (dsss) communications system with frequency modulation utilized to achieve spectral spreading

Publications (1)

Publication Number Publication Date
ES2095302T3 true ES2095302T3 (es) 1997-02-16

Family

ID=24436421

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91309882T Expired - Lifetime ES2095302T3 (es) 1990-11-02 1991-10-25 Sistema de comunicaciones de espectro de propagacion de secuencia directa (dss) con modulacion de frecuencia utilizado para conseguir propagacion de espectros.

Country Status (6)

Country Link
US (1) US5150377A (es)
EP (1) EP0484065B1 (es)
JP (1) JPH0779283B2 (es)
KR (1) KR100210321B1 (es)
DE (1) DE69123942T2 (es)
ES (1) ES2095302T3 (es)

Families Citing this family (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5987058A (en) * 1988-11-02 1999-11-16 Axonn Corporation Wireless alarm system
US5504936A (en) 1991-04-02 1996-04-02 Airtouch Communications Of California Microcells for digital cellular telephone systems
US5887020A (en) 1991-05-13 1999-03-23 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5815525A (en) 1991-05-13 1998-09-29 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5694414A (en) 1991-05-13 1997-12-02 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5790587A (en) 1991-05-13 1998-08-04 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5796772A (en) 1991-05-13 1998-08-18 Omnipoint Corporation Multi-band, multi-mode spread-spectrum communication system
US5285469A (en) 1991-06-03 1994-02-08 Omnipoint Data Corporation Spread spectrum wireless telephone system
US5280499A (en) * 1991-10-18 1994-01-18 Ricoh Company, Ltd. Spread spectrum communication system
US5258995A (en) * 1991-11-08 1993-11-02 Teknekron Communications Systems, Inc. Wireless communication system
US5353311A (en) * 1992-01-09 1994-10-04 Nec Corporation Radio transmitter
GB2267627B (en) * 1992-05-27 1996-01-03 Roke Manor Research Improvements in or relating to radio communication systems
US5258996A (en) * 1992-07-17 1993-11-02 Voyager Technologies, Inc. Spread spectrum apparatus
US5533046A (en) * 1992-10-08 1996-07-02 Lund; Vanmetre Spread spectrum communication system
US5299228A (en) * 1992-12-28 1994-03-29 Motorola, Inc. Method and apparatus of reducing power consumption in a CDMA communication unit
US5465396A (en) 1993-01-12 1995-11-07 Usa Digital Radio Partners, L.P. In-band on-channel digital broadcasting
US5353302A (en) * 1993-02-03 1994-10-04 At&T Bell Laboratories Signal despreader for CDMA systems
US5363401A (en) * 1993-02-25 1994-11-08 Harris Corporation Mechanism for extracting hybrid (fh/ds) spread spectrum signals within multi-signal type environment
US5854808A (en) * 1993-09-14 1998-12-29 Pacific Communication Sciences Methods and apparatus for detecting the presence of a prescribed signal in a channel of a communications system
US5574750A (en) * 1993-09-14 1996-11-12 Pacific Communication Sciences, Inc. Methods and apparatus for detecting a cellular digital packet data (CDPD) carrier
JP2705538B2 (ja) * 1993-09-22 1998-01-28 日本電気株式会社 Ｃｄｍａモード及びｆｍモードの共用受信機
CN1035586C (zh) * 1993-10-13 1997-08-06 Ntt移动通信网株式会社 扩频通信接收机
US5436941A (en) * 1993-11-01 1995-07-25 Omnipoint Corporation Spread spectrum spectral density techniques
KR100217715B1 (ko) * 1993-12-31 1999-09-01 윤종용 직접확산/부호분할 다중접근 시스템에서의 업-링크 접근 시스템
US5956624A (en) * 1994-07-12 1999-09-21 Usa Digital Radio Partners Lp Method and system for simultaneously broadcasting and receiving digital and analog signals
IL114471A0 (en) * 1994-07-12 1996-01-31 Usa Digital Radio Partners L P Method and system for simultaneously broadcasting and analog signals
US5627856A (en) * 1994-09-09 1997-05-06 Omnipoint Corporation Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators
US5692007A (en) 1994-09-09 1997-11-25 Omnipoint Corporation Method and apparatus for differential phase encoding and decoding in spread-spectrum communication systems with continuous-phase modulation
US5648982A (en) * 1994-09-09 1997-07-15 Omnipoint Corporation Spread spectrum transmitter
US5832028A (en) * 1994-09-09 1998-11-03 Omnipoint Corporation Method and apparatus for coherent serial correlation of a spread spectrum signal
US5610940A (en) * 1994-09-09 1997-03-11 Omnipoint Corporation Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal
US5963586A (en) 1994-09-09 1999-10-05 Omnipoint Corporation Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
US5953370A (en) 1994-09-09 1999-09-14 Omnipoint Corporation Apparatus for receiving and correlating a spread spectrum signal
US5881100A (en) 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
US5754585A (en) 1994-09-09 1998-05-19 Omnipoint Corporation Method and apparatus for serial noncoherent correlation of a spread spectrum signal
US5757847A (en) 1994-09-09 1998-05-26 Omnipoint Corporation Method and apparatus for decoding a phase encoded signal
US5629956A (en) * 1994-09-09 1997-05-13 Omnipoint Corporation Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal
US5680414A (en) 1994-09-09 1997-10-21 Omnipoint Corporation Synchronization apparatus and method for spread spectrum receiver
US5856998A (en) 1994-09-09 1999-01-05 Omnipoint Corporation Method and apparatus for correlating a continuous phase modulated spread spectrum signal
US5659574A (en) 1994-09-09 1997-08-19 Omnipoint Corporation Multi-bit correlation of continuous phase modulated signals
US5754584A (en) 1994-09-09 1998-05-19 Omnipoint Corporation Non-coherent spread-spectrum continuous-phase modulation communication system
US5682605A (en) * 1994-11-14 1997-10-28 989008 Ontario Inc. Wireless communication system
US5917850A (en) * 1994-11-24 1999-06-29 Canon Kabushiki Kaisha Spread spectrum receiving apparatus
US5832022A (en) * 1995-06-02 1998-11-03 Omnipoint Corporation Method and apparatus for controlling the modulation index of continuous phase modulated (CPM) signals
US5828692A (en) * 1995-12-06 1998-10-27 Rockwell International Corporation Baseband demodulator for polar or rectangular modulated signal in a cordless spread spectrum telephone
JP2780692B2 (ja) * 1995-12-06 1998-07-30 日本電気株式会社 Ｃｄｍａ受信装置
US5892792A (en) * 1995-12-06 1999-04-06 Rockwell International Corporation 12-chip coded spread spectrum modulation for direct conversion radio architecture in a digital cordless telephone
US5778022A (en) * 1995-12-06 1998-07-07 Rockwell International Corporation Extended time tracking and peak energy in-window demodulation for use in a direct sequence spread spectrum system
US5896576A (en) * 1995-12-06 1999-04-20 Rockwell International Corporation Audio mute for digital cordless telephone
US5930286A (en) * 1995-12-06 1999-07-27 Conexant Systems, Inc. Gain imbalance compensation for a quadrature receiver in a cordless direct sequence spread spectrum telephone
US5764689A (en) * 1995-12-06 1998-06-09 Rockwell International Corporation Variable digital automatic gain control in a cordless direct sequence spread spectrum telephone
US5799034A (en) * 1995-12-06 1998-08-25 Rockwell International Corporation Frequency acquisition method for direct sequence spread spectrum systems
US5732111A (en) * 1995-12-06 1998-03-24 Rockwell International Corporation Frequency error compensation for direct sequence spread spectrum systems
US5758263A (en) * 1995-12-07 1998-05-26 Rockwell International Corporation Selection of communication channel in a digital cordless telephone
US5894593A (en) * 1996-11-04 1999-04-13 Motorola, Inc. Method and apparatus for enhancing the detection of the presence of an FM signal using a coded pattern
EP0895366A1 (fr) * 1997-07-31 1999-02-03 Alcatel Emetteur/récepteur à étalement de spectre
US6775324B1 (en) * 1998-03-11 2004-08-10 Thomson Licensing S.A. Digital signal modulation system
US20010050946A1 (en) * 1998-04-30 2001-12-13 Nabil Khalifa Code division multiple access transmitter and receiver
EP0993702A2 (en) * 1998-04-30 2000-04-19 Cellon France SAS Code division multiple access transmitter and receiver
SE9802109D0 (sv) * 1998-06-12 1998-06-12 Ericsson Telefon Ab L M One-bit correlator rake receiver
DE19855292C1 (de) * 1998-11-24 2000-10-05 Jens Kurrat Digitales Funkkopfhöhrersystem
US6603818B1 (en) 1999-09-23 2003-08-05 Lockheed Martin Energy Research Corporation Pulse transmission transceiver architecture for low power communications
DE19954897A1 (de) * 1999-11-15 2001-07-26 Infineon Technologies Ag Verfahren zur Verwendung eines auf Frequenzmodulation basierenden Transceivers für mit einem Spreizspektrumverfahren kodierte Signale
US6282231B1 (en) 1999-12-14 2001-08-28 Sirf Technology, Inc. Strong signal cancellation to enhance processing of weak spread spectrum signal
FR2827734A1 (fr) * 2001-07-17 2003-01-24 Koninkl Philips Electronics Nv Recepteur, procede, programme et signal de transport pour adapter le volume sonore d'un signal acoustique d'appel entrant
FR2834003B1 (fr) 2001-12-21 2004-07-09 Renault Moteur multicylindre a allumage par compression, notamment de type diesel a injection directe, a pistons presentant un fond de bol specialement profile
DE10302391A1 (de) * 2003-01-22 2004-08-12 Austriamicrosystems Ag Oszillatoranordnung für Frequenzmodulation
US20040198260A1 (en) * 2003-02-11 2004-10-07 Andreas Molisch UWB communication system with shaped signal spectrum
BR0302553A (pt) * 2003-07-01 2005-03-29 Intelbras S A Ind De Telecomun Equipamento telefônico sem fio com espalhamento espectral em voz amostrada
US7746939B2 (en) * 2005-07-29 2010-06-29 Itt Manufacturing Enterprises, Inc. Methods and apparatus for encoding information in a signal by spectral notch modulation
US9712355B1 (en) 2016-01-11 2017-07-18 Qualcomm Incorporated Spreading techniques for frequency-shift keying modulation
DE102022113117B3 (de) 2022-05-24 2023-10-05 Oliver Bartels Besonders sicheres Mehrträger-Kommunikationsgerät für hohe Datenraten

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1560474A (en) * 1977-06-06 1980-02-06 Int Standard Electric Corp Processor for multiple continous spread spectrum signals
JPS63169151A (ja) * 1987-01-06 1988-07-13 Kokusai Electric Co Ltd 同期ｆｓｋ方式の変調回路
US4912722A (en) * 1988-09-20 1990-03-27 At&T Bell Laboratories Self-synchronous spread spectrum transmitter/receiver
WO1990010982A1 (en) * 1989-03-06 1990-09-20 Hillier Technologies Limited Partnership Spread spectrum communications system with randomizing signal
US5016255A (en) * 1989-08-07 1991-05-14 Omnipoint Data Company, Incorporated Asymmetric spread spectrum correlator
US5005169A (en) * 1989-11-16 1991-04-02 Westinghouse Electric Corp. Frequency division multiplex guardband communication system for sending information over the guardbands

Also Published As

Publication number Publication date
JPH0779283B2 (ja) 1995-08-23
DE69123942T2 (de) 1997-04-30
JPH04267645A (ja) 1992-09-24
EP0484065B1 (en) 1997-01-02
EP0484065A3 (en) 1993-03-17
KR920011139A (ko) 1992-06-27
US5150377A (en) 1992-09-22
KR100210321B1 (ko) 1999-07-15
EP0484065A2 (en) 1992-05-06
DE69123942D1 (de) 1997-02-13

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