DE3377886D1 - Improvements relating to communication over noisy lines - Google Patents

Improvements relating to communication over noisy lines

Info

Publication number
DE3377886D1
DE3377886D1 DE8383300988T DE3377886T DE3377886D1 DE 3377886 D1 DE3377886 D1 DE 3377886D1 DE 8383300988 T DE8383300988 T DE 8383300988T DE 3377886 T DE3377886 T DE 3377886T DE 3377886 D1 DE3377886 D1 DE 3377886D1
Authority
DE
Germany
Prior art keywords
control unit
signals
series
degree
compared
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
Application number
DE8383300988T
Other languages
English (en)
Inventor
Duncan George Derwent Clark
Ian David Kimber
Roderick Gerald May
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.)
EMI Ltd
Original Assignee
EMI 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 EMI Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of DE3377886D1 publication Critical patent/DE3377886D1/de
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L23/00Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00
    • H04L23/02Apparatus or local circuits for systems other than those covered by groups H04L15/00 - H04L21/00 adapted for orthogonal signalling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B1/7073Synchronisation aspects
    • H04B1/7075Synchronisation aspects with code phase acquisition
    • H04B1/70755Setting of lock conditions, e.g. threshold
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details 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
    • H04B1/69Spread spectrum techniques
    • H04B1/707Spread spectrum techniques using direct sequence modulation
    • H04B2001/70706Spread spectrum techniques using direct sequence modulation using a code tracking loop, e.g. a delay locked loop
DE8383300988T 1982-03-10 1983-02-25 Improvements relating to communication over noisy lines Expired DE3377886D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8207043 1982-03-10

Publications (1)

Publication Number Publication Date
DE3377886D1 true DE3377886D1 (en) 1988-10-06

Family

ID=10528916

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383300988T Expired DE3377886D1 (en) 1982-03-10 1983-02-25 Improvements relating to communication over noisy lines

Country Status (11)

Country Link
US (1) US4517679A (de)
EP (1) EP0088564B1 (de)
JP (1) JPS58175332A (de)
AT (1) ATE36923T1 (de)
AU (1) AU559003B2 (de)
CA (1) CA1187960A (de)
DE (1) DE3377886D1 (de)
DK (1) DK168055B1 (de)
NO (1) NO161097C (de)
NZ (1) NZ203517A (de)
ZA (1) ZA831543B (de)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641322A (en) * 1983-10-18 1987-02-03 Nec Corporation System for carrying out spread spectrum communication through an electric power line
JPS60229545A (ja) * 1984-04-27 1985-11-14 Sony Corp 双方向デイジタル通信方式
US4611333A (en) * 1985-04-01 1986-09-09 Motorola, Inc. Apparatus for despreading a spread spectrum signal produced by a linear feedback shift register (LFSR)
EP0211567A3 (de) * 1985-07-24 1989-05-24 Nec Home Electronics, Ltd. Bandspreizungskommunikation über Netzleitungen
US4815106A (en) * 1986-04-16 1989-03-21 Adaptive Networks, Inc. Power line communication apparatus
US4800508A (en) * 1986-06-30 1989-01-24 Eaton Corporation Frequency detector
GB8621875D0 (en) * 1986-09-11 1986-11-05 Emi Plc Thorn Signal receiver
FR2617656B1 (fr) * 1987-06-30 1989-10-20 Thomson Csf Procede et dispositif pour l'acquisition de bits de synchronisation dans des systemes de transmission de donnees
JPS6489823A (en) * 1987-09-30 1989-04-05 Toshiba Corp Control circuit for radio equipment
FR2640099A1 (fr) * 1988-12-02 1990-06-08 Aeta Procede et dispositif de transmission de donnees a modulation a gradient de phase minimal
US5052026A (en) * 1989-02-07 1991-09-24 Harris Corporation Bit synchronizer for short duration burst communications
US5499265A (en) * 1989-08-07 1996-03-12 Omnipoint Data Company, Incorporated Spread spectrum correlator
WO1992016064A1 (en) * 1989-08-07 1992-09-17 Omnipoint Corporation Asymmetric spread spectrum correlator
US5016255A (en) * 1989-08-07 1991-05-14 Omnipoint Data Company, Incorporated Asymmetric spread spectrum correlator
US5090024A (en) * 1989-08-23 1992-02-18 Intellon Corporation Spread spectrum communications system for networks
EP0540664A4 (en) * 1990-07-23 1993-06-09 Omnipoint Corporation Sawc phase-detection method and apparatus
US5081642A (en) * 1990-08-06 1992-01-14 Omnipoint Data Company, Incorporated Reciprocal saw correlator method and apparatus
AU8959191A (en) * 1990-10-23 1992-05-20 Omnipoint Corporation Method and apparatus for establishing spread spectrum communications
US5402413A (en) * 1991-04-08 1995-03-28 Omnipoint Corporation Three-cell wireless communication system
WO1992021195A1 (en) * 1991-05-13 1992-11-26 Omnipoint Corporation Dual mode transmitter and receiver
US5285469A (en) 1991-06-03 1994-02-08 Omnipoint Data Corporation Spread spectrum wireless telephone system
EP0617864B1 (de) * 1991-12-16 2002-02-27 XIRCOM Wireless, Inc. Spreizspektrum-datenveröffentlichungssystem
US5461629A (en) * 1992-09-09 1995-10-24 Echelon Corporation Error correction in a spread spectrum transceiver
US5355389A (en) * 1993-01-13 1994-10-11 Omnipoint Corporation Reciprocal mode saw correlator method and apparatus
FR2709899B1 (fr) * 1993-09-07 1995-11-10 Sagem Procédé de détection d'une perte de synchronisation dans un réseau numérique de communication et terminal pour la mise en Óoeuvre du procédé.
WO1995012945A1 (en) * 1993-11-01 1995-05-11 Omnipoint Corporation Despreading/demodulating direct sequence spread spectrum signals
US5832028A (en) * 1994-09-09 1998-11-03 Omnipoint Corporation Method and apparatus for coherent serial correlation of a spread spectrum 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
US5757847A (en) * 1994-09-09 1998-05-26 Omnipoint Corporation Method and apparatus for decoding a phase encoded signal
US5754585A (en) * 1994-09-09 1998-05-19 Omnipoint Corporation Method and apparatus for serial noncoherent correlation of a 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
US5856998A (en) * 1994-09-09 1999-01-05 Omnipoint Corporation Method and apparatus for correlating a continuous phase modulated spread spectrum signal
US5881100A (en) * 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
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
US5680414A (en) * 1994-09-09 1997-10-21 Omnipoint Corporation Synchronization apparatus and method for spread spectrum receiver
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
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
US5610940A (en) * 1994-09-09 1997-03-11 Omnipoint Corporation Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal
US5648982A (en) * 1994-09-09 1997-07-15 Omnipoint Corporation Spread spectrum transmitter
US5742583A (en) 1994-11-03 1998-04-21 Omnipoint Corporation Antenna diversity techniques
US5784403A (en) * 1995-02-03 1998-07-21 Omnipoint Corporation Spread spectrum correlation using saw device
US5832022A (en) * 1995-06-02 1998-11-03 Omnipoint Corporation Method and apparatus for controlling the modulation index of continuous phase modulated (CPM) signals
US6282228B1 (en) 1997-03-20 2001-08-28 Xircom, Inc. Spread spectrum codes for use in communication
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
US6757334B1 (en) 1998-08-10 2004-06-29 Kamilo Feher Bit rate agile third-generation wireless CDMA, GSM, TDMA and OFDM system
US7079584B2 (en) * 1998-08-10 2006-07-18 Kamilo Feher OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation
EP1104604A1 (de) 1998-08-10 2001-06-06 Feher Kamilo Effiziente spektralsparende fqpsk und fqam signalübertragungssysteme und empfangssysteme
US6198777B1 (en) 1998-08-31 2001-03-06 Kamilo Feher Feher keying (KF) modualtion and transceivers including clock shaping processors
TWI383599B (zh) * 2008-06-02 2013-01-21 Univ Nat Taiwan 雙二位元式收發器
CN113406009B (zh) * 2021-06-23 2023-07-04 电子科技大学 一种基于光声信号匹配滤波的金属材料热扩散率测量方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800086A (en) * 1964-09-30 1974-03-26 Us Navy Automatic sync detector
US3537069A (en) * 1967-10-02 1970-10-27 Gen Dynamics Corp Sychronizers employing sequential probability ratio tests
US3654390A (en) * 1970-03-16 1972-04-04 Gen Electric Synchronizer for sequence generators
US3878527A (en) * 1970-10-07 1975-04-15 Itt Radiant energy receiver circuits
US4351064A (en) * 1970-10-30 1982-09-21 Westinghouse Electric Corp. Communication
JPS4968606A (de) * 1972-11-06 1974-07-03
US3953674A (en) * 1975-04-04 1976-04-27 Nasa Telemetry Synchronizer
US4039749A (en) * 1975-09-08 1977-08-02 Ncr Corporation Spread spectrum demodulator
JPS6028170B2 (ja) * 1979-03-30 1985-07-03 山水電気株式会社 スペクトラム拡散信号の受信における符号同期方式
US4435822A (en) * 1982-05-19 1984-03-06 Sperry Corporation Coherent spread spectrum receiving apparatus

Also Published As

Publication number Publication date
EP0088564A3 (en) 1986-03-26
DK168055B1 (da) 1994-01-24
DK116383D0 (da) 1983-03-10
NO161097B (no) 1989-03-20
AU559003B2 (en) 1987-02-19
DK116383A (da) 1983-09-11
JPH0374542B2 (de) 1991-11-27
JPS58175332A (ja) 1983-10-14
EP0088564A2 (de) 1983-09-14
AU1202083A (en) 1983-09-15
EP0088564B1 (de) 1988-08-31
NO161097C (no) 1989-06-28
ATE36923T1 (de) 1988-09-15
US4517679A (en) 1985-05-14
NZ203517A (en) 1985-08-16
CA1187960A (en) 1985-05-28
ZA831543B (en) 1983-11-30
NO830791L (no) 1983-09-12

Similar Documents

Publication Publication Date Title
DE3377886D1 (en) Improvements relating to communication over noisy lines
ES2165394T3 (es) Sistema de microordenador expandido para controlar la interferencia de radio frecuencia.
TW363310B (en) CDMA communication system and method using the same
MX9708514A (es) Metodo para recibir y buscar una transmision de señal en rafaga.
IL141705A0 (en) Simplified receiver with rotator for performing position location
BR9406692A (pt) Processo para determinar a possibilidade de utilização de sinais recebidos em sistema de comunicação aparelho para receptor e receptor
DE3170013D1 (en) Improvements in or relating to data transmission systems
GB2267630A (en) System for determining absolute phase of differentially-encoded phase-modulated signal
CA2207965A1 (en) Radio loop-back test method having improved reliability and a system using the test method
SG64788G (en) System for the transmission of digital information signals
SG52292A1 (en) CLock signal generator for a digital television receiver
EP0052532B1 (de) Rauschunterdrückungssystem zur Verwendung in einem Empfänger für ein AM-Fernmeldesystem mit Vielfachträgern
SE8405992L (sv) Radiomottagare
JPS57111132A (en) Disturbing wave rejecting and receiving system
EP0326746A3 (de) Empfänger für RDS
SU1840267A1 (ru) Устройство поиска системы связи с широкополосными сигналами
HUTH Integrated source and channel encoded digital communication system design study(for space shuttles)[Final Report]
JPS57201350A (en) Information transmission system
SE9000654D0 (sv) Foerfarande foer att aastadkomma saeker traadloes kommunikation, samt system foer genomfoerande av foerfarandet
TH17940EX (th) อุปกรณ์ที่มีการให้สัญญาณนาฬิกาสำหรับภาครับทีวีแบบดิจิตอลเป็นผลตอบของการเปลี่ยนช่อง
CA2525598A1 (en) Mitigation of multipath effects in global positioning system receivers
JPS5338007A (en) System for receiving signals from moving bodies

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: BRUEMMERSTEDT, H., DIPL.-ING., PAT.-ANW., 3000 HANNOVER

8339 Ceased/non-payment of the annual fee