NL183692B - Meervoudig toegankelijk satellietcommunicatiestelsel op tijdmultiplexbasis. - Google Patents

Meervoudig toegankelijk satellietcommunicatiestelsel op tijdmultiplexbasis.

Info

Publication number
NL183692B
NL183692B NLAANVRAGE7902734,A NL7902734A NL183692B NL 183692 B NL183692 B NL 183692B NL 7902734 A NL7902734 A NL 7902734A NL 183692 B NL183692 B NL 183692B
Authority
NL
Netherlands
Prior art keywords
communication system
satellite communication
time multiplex
multiplex basis
multiple accessible
Prior art date
Application number
NLAANVRAGE7902734,A
Other languages
English (en)
Other versions
NL183692C (nl
NL7902734A (nl
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 NL7902734A publication Critical patent/NL7902734A/nl
Publication of NL183692B publication Critical patent/NL183692B/nl
Application granted granted Critical
Publication of NL183692C publication Critical patent/NL183692C/nl

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
NLAANVRAGE7902734,A 1978-04-28 1979-04-06 Meervoudig toegankelijk satellietcommunicatiestelsel op tijdmultiplexbasis. NL183692C (nl)

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 (3)

Publication Number Publication Date
NL7902734A NL7902734A (nl) 1979-10-30
NL183692B true NL183692B (nl) 1988-07-18
NL183692C NL183692C (nl) 1988-12-16

Family

ID=12882305

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7902734,A NL183692C (nl) 1978-04-28 1979-04-06 Meervoudig toegankelijk satellietcommunicatiestelsel op tijdmultiplexbasis.

Country Status (10)

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

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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
US5477458A (en) * 1994-01-03 1995-12-19 Trimble Navigation Limited Network for carrier phase differential GPS corrections
NL9420044A (nl) * 1994-01-03 1996-10-01 Trimble Navigation Netwerk voor differentiële GPS-codefase-correcties.
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
GB2321372B (en) * 1994-07-22 1998-11-25 Int Mobile Satellite Org Satellite communication method and apparatus
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
US6356555B1 (en) 1995-08-25 2002-03-12 Terayon Communications Systems, Inc. Apparatus and method for digital data transmission using orthogonal codes
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
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
CN1142635C (zh) * 1997-05-13 2004-03-17 夸尔柯姆股份有限公司 多副天线的检测和选择系统
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
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
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
WO2000079705A1 (fr) * 1999-06-17 2000-12-28 Mitsubishi Denki Kabushiki Kaisha 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
US6888498B2 (en) * 2002-09-24 2005-05-03 Honeywell International, Inc. Method and system for compensating satellite signals
WO2004030237A2 (en) * 2002-09-24 2004-04-08 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
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
US7979095B2 (en) * 2007-10-20 2011-07-12 Airbiquity, Inc. Wireless in-band signaling with in-vehicle systems
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
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
WO2022150518A1 (en) 2021-01-06 2022-07-14 Lynk Global, Inc. Satellite communication system transmitting navigation signals using a wide beam and data signals using a directive beam

Family Cites Families (4)

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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
FR2424673A1 (fr) 1979-11-23
CA1130026A (en) 1982-08-17
JPS54143009A (en) 1979-11-07
NL183692C (nl) 1988-12-16
IT1164674B (it) 1987-04-15
SE440576B (sv) 1985-08-05
SE7903715L (sv) 1979-10-29
GB2022369A (en) 1979-12-12
JPS5746692B2 (nl) 1982-10-05
DE2916602B2 (de) 1980-10-23
GB2022369B (en) 1982-06-30
DE2916602C3 (de) 1981-08-13
NL7902734A (nl) 1979-10-30
FR2424673B1 (nl) 1984-03-30
DE2916602A1 (de) 1979-10-31
US4218654A (en) 1980-08-19
BE875909A (fr) 1979-08-16
IT7948849A0 (it) 1979-04-26

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Legal Events

Date Code Title Description
A1A A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
V4 Discontinued because of reaching the maximum lifetime of a patent

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