FI884939A0 - Radiosystem med tiddelning som utnyttjar binaer fasnycklingssynkronisering foer kvadraturfasnycklingssignaler som utsaetts foer slumpartade fasvariationer och flervaegsfadning. - Google Patents

Radiosystem med tiddelning som utnyttjar binaer fasnycklingssynkronisering foer kvadraturfasnycklingssignaler som utsaetts foer slumpartade fasvariationer och flervaegsfadning.

Info

Publication number
FI884939A0
FI884939A0 FI884939A FI884939A FI884939A0 FI 884939 A0 FI884939 A0 FI 884939A0 FI 884939 A FI884939 A FI 884939A FI 884939 A FI884939 A FI 884939A FI 884939 A0 FI884939 A0 FI 884939A0
Authority
FI
Finland
Prior art keywords
foer
som
utsaetts
tiddelning
slumpartade
Prior art date
Application number
FI884939A
Other languages
English (en)
Other versions
FI87712C (fi
FI87712B (fi
FI884939A (fi
Inventor
David E Borth
Chih-Fei Wang
Duane C Rabe
Gerald P Labedz
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of FI884939A0 publication Critical patent/FI884939A0/fi
Publication of FI884939A publication Critical patent/FI884939A/fi
Application granted granted Critical
Publication of FI87712B publication Critical patent/FI87712B/fi
Publication of FI87712C publication Critical patent/FI87712C/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Radio Relay Systems (AREA)
FI884939A 1987-12-04 1988-10-26 Radiosystem med tiddelning som utnyttjar binaer fasnycklingssynkronisering foer kvadraturfasnycklingssignaler som utsaetts foer slumpartade fasvariationer och flervaegsfadning FI87712C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/128,677 US4873683A (en) 1987-12-04 1987-12-04 TDMA radio system employing BPSK synchronization for QPSK signals subject to random phase variation and multipath fading
US12867787 1987-12-04

Publications (4)

Publication Number Publication Date
FI884939A0 true FI884939A0 (fi) 1988-10-26
FI884939A FI884939A (fi) 1989-06-05
FI87712B FI87712B (fi) 1992-10-30
FI87712C FI87712C (fi) 1993-02-10

Family

ID=22436451

Family Applications (1)

Application Number Title Priority Date Filing Date
FI884939A FI87712C (fi) 1987-12-04 1988-10-26 Radiosystem med tiddelning som utnyttjar binaer fasnycklingssynkronisering foer kvadraturfasnycklingssignaler som utsaetts foer slumpartade fasvariationer och flervaegsfadning

Country Status (9)

Country Link
US (1) US4873683A (fi)
EP (1) EP0318686B1 (fi)
JP (1) JP2990694B2 (fi)
AT (1) ATE99475T1 (fi)
CA (1) CA1294073C (fi)
DE (1) DE3886712T2 (fi)
ES (1) ES2047529T3 (fi)
FI (1) FI87712C (fi)
HK (1) HK19497A (fi)

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GB2272133B (en) * 1992-11-02 1996-06-12 Motorola Inc Radio system
US5677934A (en) * 1992-12-30 1997-10-14 Nokia Mobile Phones Limited Multipath propagation compensation in a TDMA system
FI94818C (fi) * 1993-06-02 1995-10-25 Nokia Telecommunications Oy Menetelmä digitaalisesti moduloidun signaalin demoduloimiseksi sekä demodulaattori
JP3160453B2 (ja) * 1993-11-29 2001-04-25 松下電器産業株式会社 データ受信装置
WO1995018486A1 (en) * 1993-12-29 1995-07-06 Tcsi Corporation A wireless digital synchronized diversity receiver
US5479453A (en) * 1993-12-29 1995-12-26 Tsci Corporation Wireless telecommunication digital receiver
US5461646A (en) * 1993-12-29 1995-10-24 Tcsi Corporation Synchronization apparatus for a diversity receiver
US5533063A (en) * 1994-01-31 1996-07-02 The Regents Of The University Of California Method and apparatus for multipath channel shaping
US6195399B1 (en) * 1994-03-28 2001-02-27 Ericsson Inc. Method and apparatus for converting a wideband if signal to a complex (quadrature) baseband signal
WO1995034140A1 (en) * 1994-06-03 1995-12-14 Motorola, Inc. Method and apparatus for cancelling interference in signals having undergone multipath
US5881100A (en) * 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent 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
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
US5754584A (en) * 1994-09-09 1998-05-19 Omnipoint Corporation Non-coherent spread-spectrum continuous-phase modulation communication system
JP3581448B2 (ja) * 1994-10-21 2004-10-27 キヤノン株式会社 スペクトラム拡散通信装置
US5621766A (en) * 1994-10-31 1997-04-15 Motorola, Inc. Method and apparatus for burst detecting
US6128331A (en) * 1994-11-07 2000-10-03 Cisco Systems, Inc. Correlation system for use in wireless direct sequence spread spectrum systems
US5742907A (en) * 1995-07-19 1998-04-21 Ericsson Inc. Automatic clear voice and land-line backup alignment for simulcast system
US6055280A (en) * 1997-06-27 2000-04-25 Raytheon Company High data rate digital demodulator and bit synchronizer
CN1124009C (zh) * 1997-12-29 2003-10-08 株式会社建伍 接收机的帧同步信号捕获电路
US6560652B1 (en) * 1998-11-20 2003-05-06 Legerity, Inc. Method and apparatus for accessing variable sized blocks of data
FR2808951B1 (fr) * 2000-05-10 2002-09-27 Jean Pierre Dehaene Procede de modulation-demodulation a 4 etats de phase utilisant le poinconnage de certains symboles pour ameliorer l'acquisition de la synchronisation phase- frequence a faible rapport signal a bruit
US6912249B2 (en) * 2001-03-15 2005-06-28 Telefonaktiebolaget L M Ericsson (Publ) Method and system for training a radio receiver
US7603081B2 (en) * 2001-09-14 2009-10-13 Atc Technologies, Llc Radiotelephones and operating methods that use a single radio frequency chain and a single baseband processor for space-based and terrestrial communications
US6973296B2 (en) * 2001-12-04 2005-12-06 Intersil Americas Inc. Soft decision gain compensation for receive filter attenuation
FR2855684B1 (fr) * 2003-05-26 2005-07-01 Commissariat Energie Atomique Recepteur de signal ultra large bande et procede de reception associe.
KR100594146B1 (ko) * 2004-02-11 2006-06-28 삼성전자주식회사 비동기 이동통신 시스템에서 초기 주파수 옵셋 추정 장치및 방법
US7627004B2 (en) * 2005-05-26 2009-12-01 Cisco Technology, Inc. Transporting synchronization channel information across a packet network
FI20065534A0 (fi) * 2006-08-28 2006-08-28 Nokia Corp Synkronisointi
JP5217999B2 (ja) * 2008-12-12 2013-06-19 沖電気工業株式会社 伝搬遅延時間調整方法、伝搬遅延時間調整システム、伝搬遅延時間調整装置、伝搬遅延時間調整プログラム及びノード装置

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US3617889A (en) * 1969-08-13 1971-11-02 Rca Corp Time-frequency-phase in-band coded communications system
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US4672638A (en) * 1983-10-24 1987-06-09 Nec Corporation Multipath canceller for cancelling a distortion caused to a radio frequency pulse by multipath transmission
US4606051A (en) * 1983-11-10 1986-08-12 Universal Data Systems, Inc. QPSK demodulator with I and Q post-detection data correction
US4599732A (en) * 1984-04-17 1986-07-08 Harris Corporation Technique for acquiring timing and frequency synchronization for modem utilizing known (non-data) symbols as part of their normal transmitted data format
US4707841A (en) * 1984-08-21 1987-11-17 University Of Toronto, Innovations Foundation Digital data receiver for preamble free data transmission
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Also Published As

Publication number Publication date
EP0318686A3 (en) 1990-08-29
DE3886712D1 (de) 1994-02-10
FI87712C (fi) 1993-02-10
EP0318686B1 (en) 1993-12-29
US4873683A (en) 1989-10-10
EP0318686A2 (en) 1989-06-07
FI87712B (fi) 1992-10-30
ES2047529T3 (es) 1994-03-01
ATE99475T1 (de) 1994-01-15
HK19497A (en) 1997-02-20
FI884939A (fi) 1989-06-05
DE3886712T2 (de) 1994-04-28
CA1294073C (en) 1992-01-07
JP2990694B2 (ja) 1999-12-13
JPH01190152A (ja) 1989-07-31

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Legal Events

Date Code Title Description
FG Patent granted

Owner name: MOTOROLA, INC.

MA Patent expired