IL111470A - Spread spectrum spectral density methods and apparatus - Google Patents

Spread spectrum spectral density methods and apparatus

Info

Publication number
IL111470A
IL111470A IL11147094A IL11147094A IL111470A IL 111470 A IL111470 A IL 111470A IL 11147094 A IL11147094 A IL 11147094A IL 11147094 A IL11147094 A IL 11147094A IL 111470 A IL111470 A IL 111470A
Authority
IL
Israel
Prior art keywords
spread spectrum
spectral density
spectrum spectral
density methods
methods
Prior art date
Application number
IL11147094A
Other languages
English (en)
Other versions
IL111470A0 (en
Original Assignee
Omnipoint 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 Omnipoint Corp filed Critical Omnipoint Corp
Publication of IL111470A0 publication Critical patent/IL111470A0/xx
Publication of IL111470A publication Critical patent/IL111470A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/102—Combining codes
    • 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)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Dc Digital Transmission (AREA)
IL11147094A 1993-11-01 1994-10-31 Spread spectrum spectral density methods and apparatus IL111470A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/146,499 US5436941A (en) 1993-11-01 1993-11-01 Spread spectrum spectral density techniques

Publications (2)

Publication Number Publication Date
IL111470A0 IL111470A0 (en) 1994-12-29
IL111470A true IL111470A (en) 1997-08-14

Family

ID=22517657

Family Applications (1)

Application Number Title Priority Date Filing Date
IL11147094A IL111470A (en) 1993-11-01 1994-10-31 Spread spectrum spectral density methods and apparatus

Country Status (7)

Country Link
US (2) US5436941A (ja)
EP (1) EP0727111A4 (ja)
JP (1) JPH09504670A (ja)
KR (1) KR960706233A (ja)
CA (1) CA2174647A1 (ja)
IL (1) IL111470A (ja)
WO (1) WO1995012924A1 (ja)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5436941A (en) * 1993-11-01 1995-07-25 Omnipoint Corporation Spread spectrum spectral density techniques
US5745484A (en) * 1995-06-05 1998-04-28 Omnipoint Corporation Efficient communication system using time division multiplexing and timing adjustment control
US6356607B1 (en) 1995-06-05 2002-03-12 Omnipoint Corporation Preamble code structure and detection method and apparatus
JP3707165B2 (ja) * 1996-11-01 2005-10-19 ソニー株式会社 映像伝送方法、映像処理方法、映像伝送装置および映像処理装置
US6141373A (en) 1996-11-15 2000-10-31 Omnipoint Corporation Preamble code structure and detection method and apparatus
GB9700854D0 (en) 1997-01-16 1997-03-05 Scient Generics Ltd Sub-audible acoustic data transmission mechanism
AU754257B2 (en) * 1997-10-10 2002-11-07 Qualcomm Incorporated Multi-layered PN code spreading in a multi-user communications system
US6408019B1 (en) 1997-12-29 2002-06-18 Georgia Tech Research Corporation System and method for communication using noise
GB2340700B (en) * 1998-08-13 2000-07-12 Ramar Technology Ltd A technique to extend the jamming margin of a DSSS communication system
GB9917985D0 (en) 1999-07-30 1999-09-29 Scient Generics Ltd Acoustic communication system
WO2001097395A2 (en) * 2000-06-12 2001-12-20 Time Domain Corporation A method and apparatus for applying codes having predefined properties
US20020150149A1 (en) * 2000-09-29 2002-10-17 Yoshihiro Tanno Code detection circuit and code detection method
AU2211102A (en) * 2000-11-30 2002-06-11 Scient Generics Ltd Acoustic communication system
CN101282184A (zh) * 2000-11-30 2008-10-08 英特拉松尼克斯有限公司 通信系统
US7339605B2 (en) * 2004-04-16 2008-03-04 Polycom, Inc. Conference link between a speakerphone and a video conference unit
DK1464172T3 (da) * 2001-12-24 2013-06-24 Intrasonics Sarl System til undertekstning
WO2003083094A1 (en) * 2002-03-29 2003-10-09 Innogenetics N.V. Hbv drug resistance drug resistance detection methods
US8199791B2 (en) * 2005-06-08 2012-06-12 Polycom, Inc. Mixed voice and spread spectrum data signaling with enhanced concealment of data
GB2460306B (en) 2008-05-29 2013-02-13 Intrasonics Sarl Data embedding system
KR101007339B1 (ko) * 2008-11-06 2011-01-14 주식회사 텔레칩스 의사난수 배열 생성 방식의 스크램블러 장치
JP6632782B1 (ja) * 2019-01-21 2020-01-22 三菱電機株式会社 送信装置、送信方法、制御回路、およびプログラム

Family Cites Families (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4247942A (en) * 1961-03-01 1981-01-27 Ford Aerospace & Communications Corp. Jam resistant communication system
US3934203A (en) * 1974-05-24 1976-01-20 The United States Of America As Represented By The Secretary Of The Navy Spread spectrum modem
US4163944A (en) * 1976-12-22 1979-08-07 Ncr Corporation Compensation circuit for an electrical signal mixer
US4131484A (en) * 1978-02-13 1978-12-26 Western Electric Company, Inc. Frequency adjusting a piezoelectric device by lasering
US4425661A (en) * 1981-09-03 1984-01-10 Applied Spectrum Technologies, Inc. Data under voice communications system
US4479226A (en) * 1982-03-29 1984-10-23 At&T Bell Laboratories Frequency-hopped single sideband mobile radio system
CA1191905A (en) * 1982-06-30 1985-08-13 Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'exploitation Limitee Spread spectrum modem
US4601047A (en) * 1984-03-23 1986-07-15 Sangamo Weston, Inc. Code division multiplexer using direct sequence spread spectrum signal processing
US4561089A (en) * 1984-03-23 1985-12-24 Sangamo Weston, Inc. Correlation detectors for use in direct sequence spread spectrum signal receiver
US4567588A (en) * 1984-03-23 1986-01-28 Sangamo Weston, Inc. Synchronization system for use in direct sequence spread spectrum signal receiver
DE3511430A1 (de) * 1985-03-29 1986-10-02 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zur synchronisierung der empfangseinrichtungen in einem digitalen multiplex-uebertragungssystem
US4630283A (en) * 1985-07-17 1986-12-16 Rca Corporation Fast acquisition burst mode spread spectrum communications system with pilot carrier
EP0211567A3 (en) * 1985-07-24 1989-05-24 Nec Home Electronics, Ltd. Spread spectrum power line communications
US4672658A (en) * 1985-10-16 1987-06-09 At&T Company And At&T Bell Laboratories Spread spectrum wireless PBX
US4724435A (en) * 1985-11-06 1988-02-09 Applied Spectrum Technologies, Inc. Bi-directional data telemetry system
US4703474A (en) * 1986-02-28 1987-10-27 American Telephone And Telegraph Company, At&T Bell Laboratories Spread spectrum code-division-multiple-access (SS-CDMA) lightwave communication system
US4837786A (en) * 1986-08-07 1989-06-06 Comstream Corporation Technique for mitigating rain fading in a satellite communications system using quadrature phase shift keying
US4807222A (en) * 1986-08-25 1989-02-21 American Telephone And Telegraph Company At&T Bell Laboratories Cordless accessed high-speed high-capacity local area networks
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US4804938A (en) * 1986-10-24 1989-02-14 Sangamo Weston, Inc. Distribution energy management system
US4759034A (en) * 1986-12-02 1988-07-19 General Research Of Electronics, Inc. Multi-step spread spectrum communication apparatus
US4774715A (en) * 1987-03-11 1988-09-27 Telesystems Slw Inc. Device for demodulating a spread spectrum signal
US4811357A (en) * 1988-01-04 1989-03-07 Paradyne Corporation Secondary channel for digital modems using spread spectrum subliminal induced modulation
US4805208A (en) * 1988-01-15 1989-02-14 Niravoice, Inc. Modem compression system for telephone network
GB2220824A (en) * 1988-07-13 1990-01-17 Philips Electronic Associated Transmission system for sending two signals simultaneously on the same communications channel
CH676179A5 (ja) * 1988-09-29 1990-12-14 Ascom Zelcom Ag
JP2718978B2 (ja) * 1989-03-02 1998-02-25 株式会社トキメック データ伝送方式
US5146471A (en) * 1989-03-23 1992-09-08 Echelon Systems Corporation Correlator for spread spectrum communications systems
US4943973A (en) * 1989-03-31 1990-07-24 At&T Company Spread-spectrum identification signal for communications system
CA2015105C (en) * 1989-04-21 1994-07-26 Toshio Mizuno Hybrid modulation satellite communication system
US5022047A (en) * 1989-08-07 1991-06-04 Omnipoint Data Corporation Spread spectrum correlator
US5016255A (en) * 1989-08-07 1991-05-14 Omnipoint Data Company, Incorporated Asymmetric spread spectrum correlator
US5025452A (en) * 1990-03-20 1991-06-18 Andrew Corporation Full-duplex, sub-band spread spectrum communications system
US5157686A (en) * 1990-05-24 1992-10-20 Cylink Corporation Method and apparatus for the modulation of spread spectrum radio signals
US5253268A (en) * 1990-05-24 1993-10-12 Cylink Corporation Method and apparatus for the correlation of sample bits of spread spectrum radio signals
US5166952A (en) * 1990-05-24 1992-11-24 Cylink Corporation Method and apparatus for the reception and demodulation of spread spectrum radio signals
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5081642A (en) * 1990-08-06 1992-01-14 Omnipoint Data Company, Incorporated Reciprocal saw correlator method and apparatus
US5150377A (en) * 1990-11-02 1992-09-22 At&T Bell Laboratories Direct sequence spread spectrum (dsss) communications system with frequency modulation utilized to achieve spectral spreading
US5299226A (en) * 1990-11-16 1994-03-29 Interdigital Technology Corporation Adaptive power control for a spread spectrum communications system and method
US5093840A (en) * 1990-11-16 1992-03-03 Scs Mobilecom, Inc. Adaptive power control for a spread spectrum transmitter
DE59106942D1 (de) * 1990-11-22 1996-01-04 Ascom Tech Ag Mehrfachzugriffsverfahren und Mobilfunksystem zur Durchführung des Mehrfachzugriffsverfahrens.
ATE118661T1 (de) * 1990-11-22 1995-03-15 Ascom Tech Ag Empfänger für ein dsss-signal.
US5228056A (en) * 1990-12-14 1993-07-13 Interdigital Technology Corporation Synchronous spread-spectrum communications system and method
US5274665A (en) * 1990-12-14 1993-12-28 Interdigital Technology Corporation Polyopoly overlapping spread spectrum communication system and method
CA2102914A1 (en) * 1991-05-13 1992-11-26 Robert C. Dixon Dual mode transmitter and receiver
US5177766A (en) * 1991-06-03 1993-01-05 Spectralink Corporation Digital clock timing generation in a spread-spectrum digital communication system
US5179571A (en) * 1991-07-10 1993-01-12 Scs Mobilecom, Inc. Spread spectrum cellular handoff apparatus and method
JP2554219B2 (ja) * 1991-11-26 1996-11-13 日本電信電話株式会社 ディジタル信号の重畳伝送方式
ZA931077B (en) * 1992-03-05 1994-01-04 Qualcomm Inc Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a cdma cellular communications system
US5299227A (en) * 1993-04-13 1994-03-29 American Electronics, Inc. Individual beacon identification system
MY112371A (en) * 1993-07-20 2001-05-31 Qualcomm Inc System and method for orthogonal spread spectrum sequence generation in variable data rate systems
US5436941A (en) * 1993-11-01 1995-07-25 Omnipoint Corporation Spread spectrum spectral density techniques
US5383219A (en) * 1993-11-22 1995-01-17 Qualcomm Incorporated Fast forward link power control in a code division multiple access system

Also Published As

Publication number Publication date
CA2174647A1 (en) 1995-05-11
IL111470A0 (en) 1994-12-29
US5436941A (en) 1995-07-25
EP0727111A1 (en) 1996-08-21
WO1995012924A1 (en) 1995-05-11
US5604767A (en) 1997-02-18
KR960706233A (ko) 1996-11-08
EP0727111A4 (en) 1998-01-07
JPH09504670A (ja) 1997-05-06

Similar Documents

Publication Publication Date Title
IL111470A0 (en) Spread spectrum spectral density methods and apparatus
IL136989A0 (en) Spread spectrum transmitter and method for use thereof
GR3033470T3 (en) Method and apparatus for spectral analysis
AU676355B2 (en) Spread spectrum clock generator and associated method
GB2312909B (en) Wellbore methods and apparatus
ZA954392B (en) Electroheating apparatus and methods
IL98992A0 (en) Spread spectrum encoding apparatus
GB9511538D0 (en) Wellbore methods and apparatus
GB2317141B (en) Compaction methods and apparatus
GB2320269B (en) Wellbore methods and apparatus
AU7252096A (en) Lumpectomy facilitating apparatus and methods related thereto
GB9717194D0 (en) Detector methods and apparatus
GB9625811D0 (en) Method and apparatus for spectrum management
EP0600710A3 (en) Spread spectrum receiver.
GB2274233B (en) Function selecting method and function selecting apparatus
GB9318736D0 (en) Apparatus and methods
GB2315548B (en) Apparatus and method for spectral analysis
GB9213120D0 (en) Spectroscopic apparatus and methods
GB9423541D0 (en) Mehtod and apparatus for spectral analysis
GB9720188D0 (en) Scrambling and descramblling apparatus
IL124381A0 (en) Apparatus and method for spread spectrum communications
GB9502869D0 (en) Spectrum analysing apparatus and method
IL124381A (en) Apparatus in and method for spread spectrum communications
GB9213121D0 (en) Spectroscopic apparatus and method
GB9122409D0 (en) Spectroscopic method and apparatus

Legal Events

Date Code Title Description
FF Patent granted
KB Patent renewed
KB Patent renewed
HP Change in proprietorship
MM9K Patent not in force due to non-payment of renewal fees