JPS54143009A - Space diversity system for tdma communication system - Google Patents

Space diversity system for tdma communication system

Info

Publication number
JPS54143009A
JPS54143009A JP5127278A JP5127278A JPS54143009A JP S54143009 A JPS54143009 A JP S54143009A JP 5127278 A JP5127278 A JP 5127278A JP 5127278 A JP5127278 A JP 5127278A JP S54143009 A JPS54143009 A JP S54143009A
Authority
JP
Japan
Prior art keywords
space diversity
tdma communication
communication system
diversity system
tdma
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.)
Granted
Application number
JP5127278A
Other languages
English (en)
Other versions
JPS5746692B2 (ja
Inventor
Akira Ogawa
Tatsuo Watanabe
Hideki Saitou
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 KK filed Critical Kokusai Denshin Denwa KK
Priority to JP5127278A priority Critical patent/JPS54143009A/ja
Priority to US06/013,287 priority patent/US4218654A/en
Priority to GB7907620A priority patent/GB2022369B/en
Priority to CA323,075A priority patent/CA1130026A/en
Priority to FR7907559A priority patent/FR2424673A1/fr
Priority to NLAANVRAGE7902734,A priority patent/NL183692C/xx
Priority to DE2916602A priority patent/DE2916602C3/de
Priority to IT48849/79A priority patent/IT1164674B/it
Priority to BE2/57761A priority patent/BE875909A/xx
Priority to SE7903715A priority patent/SE440576B/sv
Publication of JPS54143009A publication Critical patent/JPS54143009A/ja
Publication of JPS5746692B2 publication Critical patent/JPS5746692B2/ja
Granted legal-status Critical Current

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)
  • Radio Transmission System (AREA)
  • Time-Division Multiplex Systems (AREA)
JP5127278A 1978-04-28 1978-04-28 Space diversity system for tdma communication system Granted JPS54143009A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP5127278A JPS54143009A (en) 1978-04-28 1978-04-28 Space diversity system for tdma communication system
US06/013,287 US4218654A (en) 1978-04-28 1979-02-21 Space diversity system in TDMA communication system
GB7907620A GB2022369B (en) 1978-04-28 1979-03-05 Compensating for transit time difference in a diversity system
CA323,075A CA1130026A (en) 1978-04-28 1979-03-09 Space diversity system in tdma communication system
FR7907559A FR2424673A1 (fr) 1978-04-28 1979-03-26 Systeme de reception anti-fading a antennes multiples dans un systeme de communication a acces multiple par repartition dans le temps
NLAANVRAGE7902734,A NL183692C (nl) 1978-04-28 1979-04-06 Meervoudig toegankelijk satellietcommunicatiestelsel op tijdmultiplexbasis.
DE2916602A DE2916602C3 (de) 1978-04-28 1979-04-24 Räumliches Diversity-System für die TDMA-Nachrichtenübertragung
IT48849/79A IT1164674B (it) 1978-04-28 1979-04-26 Impianto diversionale spaziale in un impianto di comunicazioni in tdma
BE2/57761A BE875909A (fr) 1978-04-28 1979-04-27 Dispositif de reception en diversite dans l'espace pour un systeme de communications a modulation
SE7903715A SE440576B (sv) 1978-04-28 1979-04-27 Rumsbaserat diversitetssystem for ett tidmultiplexkommunikationssystem

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
JPS54143009A true JPS54143009A (en) 1979-11-07
JPS5746692B2 JPS5746692B2 (ja) 1982-10-05

Family

ID=12882305

Family Applications (1)

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

Country Status (10)

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

Families Citing this family (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4287598A (en) * 1979-12-17 1981-09-01 Bell Telephone Laboratories, Incorporated Cooperating arrangement for diversity stations
US4630289A (en) * 1979-12-21 1986-12-16 Wren Paul E Emergency locator transmitter incident time correlator
FR2502426A1 (fr) * 1981-03-20 1982-09-24 Trt Telecom Radio Electr Systeme de transmission d'informations entre une station principale et des stations secondaires operant selon un procede amrt
JPS6030898B2 (ja) * 1981-05-15 1985-07-19 テクトロニクス・インコ−ポレイテツド ロジツク・アナライザの入力装置
JPS58111784A (ja) * 1981-12-25 1983-07-02 Nec Corp 時刻の遠隔較正方式
US4630267A (en) * 1983-12-23 1986-12-16 International Business Machines Corporation Programmable timing and synchronization circuit for a TDMA communications controller
US4696052A (en) * 1985-12-31 1987-09-22 Motorola Inc. Simulcast transmitter apparatus having automatic synchronization capability
US4696051A (en) * 1985-12-31 1987-09-22 Motorola Inc. Simulcast transmission system having automtic synchronization
US4805189A (en) * 1986-02-13 1989-02-14 Signatron, Inc. Signal processing system
US4805196A (en) * 1987-04-29 1989-02-14 Gte Laboratories Incorporated Line delay compensation for digital transmission systems utilizing low power line drivers
JPS6469907A (en) * 1987-09-11 1989-03-15 Nippon Avionics Co Ltd Method for detecting three-dimensional positional shift of rod-shaped body
US5172396A (en) * 1988-10-20 1992-12-15 General Electric Company Public service trunking simulcast system
EP0396101B1 (en) * 1989-05-02 1996-01-03 Nec Corporation Space diversity TDMA receiver
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
US4972410A (en) * 1989-07-20 1990-11-20 Electrocom Automation, Inc. Method and apparatus for controlling signal coherency in simulcast systems
JP2552928B2 (ja) * 1990-01-31 1996-11-13 三菱電機株式会社 アンテナ選択ダイバーシチ受信装置
FR2661579A1 (fr) * 1990-04-27 1991-10-31 Trt Telecom Radio Electr Dispositif de mise en phase de signaux dans un systeme a doublement du conduit numerique.
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
GB2268366B (en) * 1992-06-30 1996-08-07 Ericsson Ge Mobile Communicat Control channel timing detection and self correction for digitally trunked simulcast radio communication system
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
FI934875A (fi) * 1993-11-04 1995-05-05 Nokia Telecommunications Oy Menetelmä radiotaajuisten signaalien lähettämiseksi sekä TDMA-lähetinvastaanotin
WO1995018977A1 (en) * 1994-01-03 1995-07-13 Trimble Navigation A network for code phase differential gps corrections
US5477458A (en) * 1994-01-03 1995-12-19 Trimble Navigation Limited Network for carrier phase differential GPS corrections
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.
GB2293725B (en) * 1994-07-22 1999-02-10 Int Maritime Satellite Organiz Satellite communication method and apparatus
US5846088A (en) * 1997-01-06 1998-12-08 Reichert; Jonathan F. Teaching appparatus for magnetic torque experiments
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
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
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
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
US6690681B1 (en) * 1997-05-19 2004-02-10 Airbiquity Inc. In-band signaling for data communications over digital wireless telecommunications network
US6493338B1 (en) 1997-05-19 2002-12-10 Airbiquity Inc. Multichannel in-band signaling for data communications over digital wireless telecommunications networks
US6771629B1 (en) 1999-01-15 2004-08-03 Airbiquity Inc. In-band signaling for synchronization in a voice communications network
US7164662B2 (en) * 1997-05-19 2007-01-16 Airbiquity, Inc. Network delay identification method and apparatus
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
CN1115809C (zh) * 1999-06-17 2003-07-23 三菱电机株式会社 在地面无线站与用户站之间进行无线通信的移动通信***
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
US6888498B2 (en) * 2002-09-24 2005-05-03 Honeywell International, Inc. Method and system for compensating satellite signals
US7555262B2 (en) * 2002-09-24 2009-06-30 Honeywell International Inc. Radio frequency interference monitor
AU2003272597A1 (en) * 2002-09-24 2004-04-19 Honeywell International Inc. Method and system for compensating satellite signals
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
KR101293069B1 (ko) 2007-10-20 2013-08-06 에어비퀴티 인코포레이티드. 차량내 시스템들에 의한 무선 인―밴드 시그널링
US8594138B2 (en) 2008-09-15 2013-11-26 Airbiquity Inc. Methods for in-band signaling through enhanced variable-rate codecs
US7983310B2 (en) 2008-09-15 2011-07-19 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
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
CN113056877B (zh) 2018-09-06 2023-04-04 环球星链公司 蜂窝核心网络和无线电接入网基础设施以及空间管理
US11863250B2 (en) 2021-01-06 2024-01-02 Lynk Global, Inc. Satellite communication system transmitting navigation signals using a wide beam and data signals using a directive beam

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3418579A (en) * 1964-09-08 1968-12-24 Comm And Systems Inc Satellite communication synchronizing system
US3654395A (en) * 1969-10-15 1972-04-04 Communications Satellite Corp Synchronization of tdma space division satellite system
JPS52122027A (en) * 1975-12-10 1977-10-13 Nec Corp Burst synchronizing method and unit of time-sharing pluralistic connec tion communication system
JPS5949744B2 (ja) * 1976-11-11 1984-12-04 日本電気株式会社 フレ−ム同期回路

Also Published As

Publication number Publication date
GB2022369B (en) 1982-06-30
US4218654A (en) 1980-08-19
NL183692C (nl) 1988-12-16
DE2916602C3 (de) 1981-08-13
NL183692B (nl) 1988-07-18
SE7903715L (sv) 1979-10-29
IT1164674B (it) 1987-04-15
DE2916602A1 (de) 1979-10-31
BE875909A (fr) 1979-08-16
FR2424673B1 (ja) 1984-03-30
CA1130026A (en) 1982-08-17
SE440576B (sv) 1985-08-05
NL7902734A (nl) 1979-10-30
IT7948849A0 (it) 1979-04-26
DE2916602B2 (de) 1980-10-23
JPS5746692B2 (ja) 1982-10-05
FR2424673A1 (fr) 1979-11-23
GB2022369A (en) 1979-12-12

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