KR970009301B1 - Spread spectrum communication system - Google Patents

Spread spectrum communication system Download PDF

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Publication number
KR970009301B1
KR970009301B1 KR94015592A KR19940015592A KR970009301B1 KR 970009301 B1 KR970009301 B1 KR 970009301B1 KR 94015592 A KR94015592 A KR 94015592A KR 19940015592 A KR19940015592 A KR 19940015592A KR 970009301 B1 KR970009301 B1 KR 970009301B1
Authority
KR
South Korea
Prior art keywords
communication system
spectrum communication
spread spectrum
code output
output means
Prior art date
Application number
KR94015592A
Other languages
English (en)
Other versions
KR950002282A (ko
Inventor
Masayasu Miyake
Original Assignee
Casio Computer Co Ltd
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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Publication of KR950002282A publication Critical patent/KR950002282A/ko
Application granted granted Critical
Publication of KR970009301B1 publication Critical patent/KR970009301B1/ko

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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • 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)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Relay Systems (AREA)
KR94015592A 1993-06-30 1994-06-30 Spread spectrum communication system KR970009301B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16074193 1993-06-30
JP93-160741 1993-06-30

Publications (2)

Publication Number Publication Date
KR950002282A KR950002282A (ko) 1995-01-04
KR970009301B1 true KR970009301B1 (en) 1997-06-10

Family

ID=15721458

Family Applications (1)

Application Number Title Priority Date Filing Date
KR94015592A KR970009301B1 (en) 1993-06-30 1994-06-30 Spread spectrum communication system

Country Status (5)

Country Link
US (1) US5546424A (ko)
EP (1) EP0632611B1 (ko)
KR (1) KR970009301B1 (ko)
CN (1) CN1074620C (ko)
DE (1) DE69428836T2 (ko)

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US5790588A (en) * 1995-06-07 1998-08-04 Ntt Mobile Communications Network, Inc. Spread spectrum transmitter and receiver employing composite spreading codes
US7929498B2 (en) * 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US5862173A (en) * 1995-12-11 1999-01-19 Ericsson Inc. Re-orthogonalization of wideband CDMA signals
US6061388A (en) * 1996-06-07 2000-05-09 General Electric Company Spread spectrum communication system with frequency-separated message and reference signals
JP2800797B2 (ja) * 1996-08-12 1998-09-21 日本電気株式会社 スペクトル拡散通信方式
JP3671992B2 (ja) * 1996-10-28 2005-07-13 ソニー株式会社 映像信号受信装置および映像信号受信方法
US6088659A (en) * 1997-09-11 2000-07-11 Abb Power T&D Company Inc. Automated meter reading system
US20020051434A1 (en) * 1997-10-23 2002-05-02 Ozluturk Fatih M. Method for using rapid acquisition spreading codes for spread-spectrum communications
JP3333454B2 (ja) 1997-12-20 2002-10-15 松下電器産業株式会社 相関検出装置及び相関検出装置の逆拡散符号切換え方法
US6408019B1 (en) 1997-12-29 2002-06-18 Georgia Tech Research Corporation System and method for communication using noise
FI105741B (fi) * 1998-02-12 2000-09-29 Nokia Networks Oy Tiedonsiirtomenetelmä ja radiojärjestelmä
GB2340700B (en) * 1998-08-13 2000-07-12 Ramar Technology Ltd A technique to extend the jamming margin of a DSSS communication system
US6700902B1 (en) 1998-10-19 2004-03-02 Elster Electricity, Llc Method and system for improving wireless data packet delivery
GB2352944B (en) 1999-05-31 2004-02-11 Korea Electronics Telecomm Apparatus and method for moduating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication sytem
US6801495B1 (en) * 2000-02-28 2004-10-05 Nortel Networks Limited High capacity robust modem for multiple classes of services
JP2001358613A (ja) * 2000-06-14 2001-12-26 Fujitsu Ltd Ｃｄｍａ受信装置
JP3438703B2 (ja) * 2000-06-28 2003-08-18 日本電気株式会社 スペクトラム拡散通信装置及びその通信方法
US20030021271A1 (en) * 2001-04-03 2003-01-30 Leimer Donald K. Hybrid wireless communication system
CA2356077A1 (en) * 2001-08-28 2003-02-28 Sirific Wireless Corporation Improved apparatus and method for down conversion
US7126378B2 (en) 2003-12-17 2006-10-24 Rambus, Inc. High speed signaling system with adaptive transmit pre-emphasis
US7397848B2 (en) 2003-04-09 2008-07-08 Rambus Inc. Partial response receiver
US7092472B2 (en) 2003-09-16 2006-08-15 Rambus Inc. Data-level clock recovery
US7092426B2 (en) * 2003-09-24 2006-08-15 S5 Wireless, Inc. Matched filter for scalable spread spectrum communications systems
US7236510B2 (en) * 2003-10-01 2007-06-26 S5 Wireless, Inc. Equalizer with decision feedback frequency tracking and bit decoding for spread spectrum communications
US7233164B2 (en) * 2003-12-17 2007-06-19 Rambus Inc. Offset cancellation in a multi-level signaling system
US7742430B2 (en) 2004-09-24 2010-06-22 Elster Electricity, Llc System for automated management of spontaneous node migration in a distributed fixed wireless network
US7702594B2 (en) 2004-09-24 2010-04-20 Elster Electricity, Llc System and method for automated configuration of meters
US7991040B2 (en) * 2006-04-04 2011-08-02 Qualcomm Incorporated Methods and apparatus for reduction of a peak to average ratio for an OFDM transmit signal
US8073384B2 (en) 2006-12-14 2011-12-06 Elster Electricity, Llc Optimization of redundancy and throughput in an automated meter data collection system using a wireless network
US8320302B2 (en) 2007-04-20 2012-11-27 Elster Electricity, Llc Over the air microcontroller flash memory updates
US9612132B2 (en) 2007-12-26 2017-04-04 Elster Solutions, Llc Optimized data collection in a wireless fixed network metering system
US8525692B2 (en) 2008-06-13 2013-09-03 Elster Solutions, Llc Techniques for limiting demand from an electricity meter with an installed relay
US8325783B2 (en) * 2008-09-23 2012-12-04 Sprint Communications Company L.P. Spreading code optimization based on quality factors
US8203463B2 (en) 2009-02-13 2012-06-19 Elster Electricity Llc Wakeup and interrogation of meter-reading devices using licensed narrowband and unlicensed wideband radio communication
CN102879644A (zh) * 2012-11-01 2013-01-16 南京国睿安泰信科技股份有限公司 利用模拟带宽预切换实现频谱仪分辨率带宽的系统

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US3808536A (en) * 1972-04-12 1974-04-30 Gen Electric Co Ltd Communication scrambler system
US4308617A (en) * 1977-11-07 1981-12-29 The Bendix Corporation Noiselike amplitude and phase modulation coding for spread spectrum transmissions
US4392220A (en) * 1980-05-30 1983-07-05 Nippon Electric Co., Ltd. Modem to be coupled to a directional transmission line of an SS multiplex communication network
US4494238A (en) * 1982-06-30 1985-01-15 Motorola, Inc. Multiple channel data link system
US4475214A (en) * 1982-10-12 1984-10-02 The United States Of America As Represented By The Secretary Of The Army CW Interference cancelling sytem for spread spectrum signals utilizing active coherent detection
US4475215A (en) * 1982-10-15 1984-10-02 The United States Of America As Represented By The Secretary Of The Army Pulse interference cancelling system for spread spectrum signals utilizing active coherent detection
US4470138A (en) * 1982-11-04 1984-09-04 The United States Of America As Represented By The Secretary Of The Army Non-orthogonal mobile subscriber multiple access system
GB8516581D0 (en) * 1985-07-01 1985-08-07 Secr Defence Serial data highway system
KR870004587A (ko) * 1985-10-16 1987-05-11 엘리 와이스 무선 근거리 통신 장치
US4759034A (en) * 1986-12-02 1988-07-19 General Research Of Electronics, Inc. Multi-step spread spectrum communication apparatus
JPH0332241A (ja) * 1989-06-29 1991-02-12 Mitsubishi Electric Corp スペクトラム拡散通信方式
US5291515A (en) * 1990-06-14 1994-03-01 Clarion Co., Ltd. Spread spectrum communication device
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5093840A (en) * 1990-11-16 1992-03-03 Scs Mobilecom, Inc. Adaptive power control for a spread spectrum transmitter
US5218619A (en) * 1990-12-17 1993-06-08 Ericsson Ge Mobile Communications Holding, Inc. CDMA subtractive demodulation

Also Published As

Publication number Publication date
DE69428836T2 (de) 2002-04-11
EP0632611A2 (en) 1995-01-04
EP0632611B1 (en) 2001-10-31
KR950002282A (ko) 1995-01-04
CN1074620C (zh) 2001-11-07
CN1104394A (zh) 1995-06-28
US5546424A (en) 1996-08-13
EP0632611A3 (en) 1995-11-02
DE69428836D1 (de) 2001-12-06

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