SE440576B - Rumsbaserat diversitetssystem for ett tidmultiplexkommunikationssystem - Google Patents

Rumsbaserat diversitetssystem for ett tidmultiplexkommunikationssystem

Info

Publication number
SE440576B
SE440576B SE7903715A SE7903715A SE440576B SE 440576 B SE440576 B SE 440576B SE 7903715 A SE7903715 A SE 7903715A SE 7903715 A SE7903715 A SE 7903715A SE 440576 B SE440576 B SE 440576B
Authority
SE
Sweden
Prior art keywords
pulse
transmission
path
signal
bundle
Prior art date
Application number
SE7903715A
Other languages
English (en)
Swedish (sv)
Other versions
SE7903715L (sv
Inventor
A Ogawa
T Watanabe
H Saito
Original Assignee
Kokusai Denshin Denwa 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 Kokusai Denshin Denwa Co Ltd filed Critical Kokusai Denshin Denwa Co Ltd
Publication of SE7903715L publication Critical patent/SE7903715L/
Publication of SE440576B publication Critical patent/SE440576B/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0891—Space-time diversity
    • H04B7/0894—Space-time diversity using different delays between antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0845—Weighted combining per branch equalization, e.g. by an FIR-filter or RAKE receiver per antenna branch
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/185—Space-based or airborne stations; Stations for satellite systems
    • H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
    • H04B7/18532—Arrangements for managing transmission, i.e. for transporting data or a signalling message
    • H04B7/18534—Arrangements for managing transmission, i.e. for transporting data or a signalling message for enhancing link reliablility, e.g. satellites diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/2041—Spot beam multiple access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radio Relay Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radio Transmission System (AREA)
SE7903715A 1978-04-28 1979-04-27 Rumsbaserat diversitetssystem for ett tidmultiplexkommunikationssystem SE440576B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5127278A JPS54143009A (en) 1978-04-28 1978-04-28 Space diversity system for tdma communication system

Publications (2)

Publication Number Publication Date
SE7903715L SE7903715L (sv) 1979-10-29
SE440576B true SE440576B (sv) 1985-08-05

Family

ID=12882305

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7903715A SE440576B (sv) 1978-04-28 1979-04-27 Rumsbaserat diversitetssystem for ett tidmultiplexkommunikationssystem

Country Status (10)

Country Link
US (1) US4218654A (fr)
JP (1) JPS54143009A (fr)
BE (1) BE875909A (fr)
CA (1) CA1130026A (fr)
DE (1) DE2916602C3 (fr)
FR (1) FR2424673A1 (fr)
GB (1) GB2022369B (fr)
IT (1) IT1164674B (fr)
NL (1) NL183692C (fr)
SE (1) SE440576B (fr)

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* Cited by examiner, † Cited by third party
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WO1995012927A1 (fr) * 1993-11-04 1995-05-11 Nokia Telecommunications Oy Procede d'emission de signaux radio et emetteur-recepteur armt

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US5172396A (en) * 1988-10-20 1992-12-15 General Electric Company Public service trunking simulcast system
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US4972410A (en) * 1989-07-20 1990-11-20 Electrocom Automation, Inc. Method and apparatus for controlling signal coherency in simulcast systems
US5117424A (en) * 1989-07-20 1992-05-26 Electrocom Automation L.P. Method and apparatus for setting clock signals to predetermined phases at remote broadcast sites in simulcast systems
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US5268933A (en) * 1991-09-27 1993-12-07 Motorola, Inc. Data packet alignment in a communication system
US5517680A (en) * 1992-01-22 1996-05-14 Ericsson Inc. Self correction of PST simulcast system timing
US5805645A (en) * 1992-06-30 1998-09-08 Ericsson Inc. Control channel synchronization between DBC and Cellular networks
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JP2556254B2 (ja) * 1993-05-12 1996-11-20 日本電気株式会社 バースト送出タイミング制御方式
US5477539A (en) * 1993-07-23 1995-12-19 Ericsson Inc. Narrow band simulcast system having low speed data distribution
US5477458A (en) * 1994-01-03 1995-12-19 Trimble Navigation Limited Network for carrier phase differential GPS corrections
WO1995018977A1 (fr) * 1994-01-03 1995-07-13 Trimble Navigation Reseau de corrections differentielles gps utilisant des signaux de phase de code
FR2715786A1 (fr) * 1994-02-02 1995-08-04 Trt Telecom Radio Electr Système de transmission de données transmises par une liaison comprenant des équipements intermédiaires et équipement intermédiaire pour un tel système.
US5846088A (en) * 1997-01-06 1998-12-08 Reichert; Jonathan F. Teaching appparatus for magnetic torque experiments
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US5586119A (en) * 1994-08-31 1996-12-17 Motorola, Inc. Method and apparatus for packet alignment in a communication system
US5790939A (en) * 1995-06-29 1998-08-04 Hughes Electronics Corporation Method and system of frame timing synchronization in TDMA based mobile satellite communication system
US5742907A (en) * 1995-07-19 1998-04-21 Ericsson Inc. Automatic clear voice and land-line backup alignment for simulcast system
FR2737627B1 (fr) * 1995-08-02 1997-10-03 Europ Agence Spatiale Systeme de transmission de signaux radioelectriques via un satellite de communication geostationnaire, notamment pour des communications avec des terminaux mobiles portables
US6665308B1 (en) 1995-08-25 2003-12-16 Terayon Communication Systems, Inc. Apparatus and method for equalization in distributed digital data transmission systems
US6307868B1 (en) 1995-08-25 2001-10-23 Terayon Communication Systems, Inc. Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops
US5805583A (en) * 1995-08-25 1998-09-08 Terayon Communication Systems Process for communicating multiple channels of digital data in distributed systems using synchronous code division multiple access
US6356555B1 (en) 1995-08-25 2002-03-12 Terayon Communications Systems, Inc. Apparatus and method for digital data transmission using orthogonal codes
US5991345A (en) * 1995-09-22 1999-11-23 Qualcomm Incorporated Method and apparatus for diversity enhancement using pseudo-multipath signals
US5842134A (en) * 1995-09-28 1998-11-24 Ericsson Inc. Auto-alignment of clear voice and low speed digital data signals in a simulcast system
US6009307A (en) * 1997-05-13 1999-12-28 Qualcomm Incorporated Multiple antenna detecting and selecting
US6771629B1 (en) 1999-01-15 2004-08-03 Airbiquity Inc. In-band signaling for synchronization in a voice communications network
US6690681B1 (en) * 1997-05-19 2004-02-10 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications network
US7164662B2 (en) * 1997-05-19 2007-01-16 Airbiquity, Inc. Network delay identification method and apparatus
US6493338B1 (en) 1997-05-19 2002-12-10 Airbiquity Inc. Multichannel in-band signaling for data communications over digital wireless telecommunications networks
SE9702370L (sv) * 1997-06-19 1998-12-20 Ericsson Telefon Ab L M Balanserad diversitet
US6674730B1 (en) 1998-08-04 2004-01-06 Tachyon, Inc. Method of and apparatus for time synchronization in a communication system
EP1107484A4 (fr) * 1999-06-17 2004-07-21 Mitsubishi Electric Corp Systeme de communications mobiles
JP3987258B2 (ja) * 1999-12-20 2007-10-03 株式会社ケンウッド サイトダイバーシティ方法、デジタル衛星放送の受信方法およびデジタル衛星放送受信機
US6823170B1 (en) * 2000-07-26 2004-11-23 Ericsson Inc. Satellite communications system using multiple earth stations
US6799116B2 (en) 2000-12-15 2004-09-28 Trimble Navigation Limited GPS correction methods, apparatus and signals
US7283567B2 (en) 2001-06-22 2007-10-16 Airbiquity Inc. Network delay identification method and apparatus
US7215965B2 (en) * 2001-11-01 2007-05-08 Airbiquity Inc. Facility and method for wireless transmission of location data in a voice channel of a digital wireless telecommunications network
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US6888498B2 (en) * 2002-09-24 2005-05-03 Honeywell International, Inc. Method and system for compensating satellite signals
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US7508810B2 (en) * 2005-01-31 2009-03-24 Airbiquity Inc. Voice channel control of wireless packet data communications
US7924934B2 (en) * 2006-04-07 2011-04-12 Airbiquity, Inc. Time diversity voice channel data communications
JP4079197B1 (ja) * 2007-02-06 2008-04-23 松下電器産業株式会社 受信装置とこれを用いた受信システム
JP5185390B2 (ja) * 2007-10-20 2013-04-17 エアビクティ インコーポレイテッド 車載システムによる無線帯域内シグナリング方法及びシステム
US7983310B2 (en) 2008-09-15 2011-07-19 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8594138B2 (en) 2008-09-15 2013-11-26 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US8036600B2 (en) 2009-04-27 2011-10-11 Airbiquity, Inc. Using a bluetooth capable mobile phone to access a remote network
US8418039B2 (en) 2009-08-03 2013-04-09 Airbiquity Inc. Efficient error correction scheme for data transmission in a wireless in-band signaling system
US8249865B2 (en) * 2009-11-23 2012-08-21 Airbiquity Inc. Adaptive data transmission for a digital in-band modem operating over a voice channel
US8848825B2 (en) 2011-09-22 2014-09-30 Airbiquity Inc. Echo cancellation in wireless inband signaling modem
US12250064B2 (en) 2017-03-02 2025-03-11 Lynk Global, Inc. Method and apparatus for handling communications between spacecraft operating in an orbital environment and terrestrial telecommunications devices that use terrestrial base station communications
US10084535B1 (en) 2017-04-26 2018-09-25 UbiquitiLink, Inc. Method and apparatus for handling communications between spacecraft operating in an orbital environment and terrestrial telecommunications devices that use terrestrial base station communications
CN109584546B (zh) * 2018-07-04 2021-06-01 东南大学 一种快速-常规公交共享车道发车流量阈值的确定方法
KR102879490B1 (ko) 2018-09-06 2025-10-31 링크 글로벌, 인크. 스페이스에서 셀룰러 코어 네트워크 및 라디오 액세스 네트워크 기반시설 및 관리
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995012927A1 (fr) * 1993-11-04 1995-05-11 Nokia Telecommunications Oy Procede d'emission de signaux radio et emetteur-recepteur armt

Also Published As

Publication number Publication date
IT1164674B (it) 1987-04-15
NL183692C (nl) 1988-12-16
DE2916602B2 (de) 1980-10-23
NL7902734A (nl) 1979-10-30
BE875909A (fr) 1979-08-16
GB2022369B (en) 1982-06-30
NL183692B (nl) 1988-07-18
GB2022369A (en) 1979-12-12
DE2916602C3 (de) 1981-08-13
IT7948849A0 (it) 1979-04-26
FR2424673B1 (fr) 1984-03-30
FR2424673A1 (fr) 1979-11-23
US4218654A (en) 1980-08-19
SE7903715L (sv) 1979-10-29
DE2916602A1 (de) 1979-10-31
JPS54143009A (en) 1979-11-07
CA1130026A (fr) 1982-08-17
JPS5746692B2 (fr) 1982-10-05

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