JPS54143009A - Space diversity system for tdma communication system - Google Patents
Space diversity system for tdma communication systemInfo
- 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
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)
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)
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)
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 |
-
1978
- 1978-04-28 JP JP5127278A patent/JPS54143009A/ja active Granted
-
1979
- 1979-02-21 US US06/013,287 patent/US4218654A/en not_active Expired - Lifetime
- 1979-03-05 GB GB7907620A patent/GB2022369B/en not_active Expired
- 1979-03-09 CA CA323,075A patent/CA1130026A/en not_active Expired
- 1979-03-26 FR FR7907559A patent/FR2424673A1/fr active Granted
- 1979-04-06 NL NLAANVRAGE7902734,A patent/NL183692C/xx not_active IP Right Cessation
- 1979-04-24 DE DE2916602A patent/DE2916602C3/de not_active Expired
- 1979-04-26 IT IT48849/79A patent/IT1164674B/it active
- 1979-04-27 SE SE7903715A patent/SE440576B/sv not_active IP Right Cessation
- 1979-04-27 BE BE2/57761A patent/BE875909A/xx not_active IP Right Cessation
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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