AR009318A1 - Metodo para sincronizar el procesamiento de acceso multiple por division de codigo (cdma) de un sistema de comunicaciones satelitales - Google Patents
Metodo para sincronizar el procesamiento de acceso multiple por division de codigo (cdma) de un sistema de comunicaciones satelitalesInfo
- Publication number
- AR009318A1 AR009318A1 ARP970103848A ARP970103848A AR009318A1 AR 009318 A1 AR009318 A1 AR 009318A1 AR P970103848 A ARP970103848 A AR P970103848A AR P970103848 A ARP970103848 A AR P970103848A AR 009318 A1 AR009318 A1 AR 009318A1
- Authority
- AR
- Argentina
- Prior art keywords
- cdma
- propagation delay
- terrestrial
- synchronize
- multiple access
- Prior art date
Links
Classifications
-
- 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
- H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Se logra la sincronizacion de una senal CDMA transmitida terrestre con la eliminacion de dispersion y la redispersion en un satélite remoto, para latransmision a un segundo sitio terrestre, de acuerdo con los procesos enumerados en lasre ivindicaciones adjuntas. Las senales de acceso de enlaceascendente y de sincronizacion se adquieren en un conmutador de satélite y se establece un tiempo de demora de la propagacion de referencia, en términos demarcas de temporizacioncuantificadas con intervalos dentro de un rango de tamanos de intervalos de los chips que se usan en los codigos de dispersionCDMA del sistema. La demora de la propagacion se define en términos de una de las marcas cuantificadas que seestablecen cuando se recibe una primera senalde una unidad de abonado terrestre. Esta demora de la propagacion se transmite a una unidad de abonado terrestre y se utiliza para ajustar la temporizacionde los chips de codigos CDMA de enlaceascendente.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/704,041 US5838669A (en) | 1996-08-28 | 1996-08-28 | Method of synchronizing satellite switched CDMA communication system |
Publications (1)
Publication Number | Publication Date |
---|---|
AR009318A1 true AR009318A1 (es) | 2000-04-12 |
Family
ID=24827816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP970103848A AR009318A1 (es) | 1996-08-28 | 1997-08-25 | Metodo para sincronizar el procesamiento de acceso multiple por division de codigo (cdma) de un sistema de comunicaciones satelitales |
Country Status (11)
Country | Link |
---|---|
US (1) | US5838669A (es) |
EP (1) | EP0827293A3 (es) |
JP (1) | JP4184459B2 (es) |
KR (1) | KR100263109B1 (es) |
CN (1) | CN1182315A (es) |
AR (1) | AR009318A1 (es) |
AU (1) | AU733219B2 (es) |
BR (1) | BR9704484A (es) |
CA (1) | CA2203475C (es) |
MX (1) | MX9706475A (es) |
SG (1) | SG54523A1 (es) |
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US6144654A (en) * | 1997-09-03 | 2000-11-07 | Motorola, Inc. | Method of combining and separating groups of multiple CDMA-encoded data signals and apparatus therefor |
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AUPP310798A0 (en) | 1998-04-22 | 1998-05-14 | Soltec Research Pty Ltd | Vehicle system for a composition comprising a piperidinopyrimidine derivative |
KR100381012B1 (ko) | 1998-05-04 | 2003-08-19 | 한국전자통신연구원 | 부호분할 다중접속 방식에서 상향 공통 채널의 임의 접속 장치및 방법 |
US6335920B1 (en) * | 1998-06-29 | 2002-01-01 | Hughes Electronics Corporation | Satellite-based measurement for uplink power control and time synchronization |
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US6876623B1 (en) * | 1998-12-02 | 2005-04-05 | Agere Systems Inc. | Tuning scheme for code division multiplex broadcasting system |
US6980531B1 (en) * | 1998-12-02 | 2005-12-27 | At&T Corp. | Multiple access spread spectrum switching methodology |
US6169887B1 (en) * | 1999-03-02 | 2001-01-02 | Motorola, Inc. | Range extension within a communication system |
KR100673420B1 (ko) * | 1999-06-29 | 2007-01-23 | 에스케이 텔레콤주식회사 | 통신시스템에서의 동기신호 송수신 장치 및 그의 동기획득 방법 |
KR100341088B1 (ko) * | 1999-08-16 | 2002-06-20 | 김진찬 | 리턴 링크에 직접순차 코드분할다중접속 방식을 사용하는 위성통신 시스템의 초기 액세스 동기 확립 방법 |
KR100733997B1 (ko) * | 1999-10-20 | 2007-06-29 | 소니 가부시끼 가이샤 | 범지구 측위시스템의 신호수신장치 및 휴대무선단말장치 |
KR100701766B1 (ko) | 1999-12-31 | 2007-03-29 | 주식회사 케이티 | 이동통신시스템에서의 프레임 동기 방법 |
US7009958B1 (en) | 2000-05-19 | 2006-03-07 | At&T Corp. | Unified encoding process for generalized multiple access |
US6859652B2 (en) | 2000-08-02 | 2005-02-22 | Mobile Satellite Ventures, Lp | Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis |
US7792488B2 (en) | 2000-12-04 | 2010-09-07 | Atc Technologies, Llc | Systems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength |
US6912211B2 (en) * | 2001-01-26 | 2005-06-28 | At&T Corp. | CDMA to packet-switching interface for code division switching in a terrestrial wireless system |
US20040202137A1 (en) * | 2001-01-26 | 2004-10-14 | Gerakoulis Diakoumis Parissis | Method for CDMA to packet-switching interface code division switching in a terrestrial wireless system |
DE60102157T2 (de) * | 2001-09-24 | 2004-07-29 | Evolium S.A.S. | Verfahren zur Synchronization von mit GNSS Empfängern versehenen Knoten eines terrestrischen Netzwerks |
US8418210B2 (en) * | 2002-02-26 | 2013-04-09 | Thomson Licensing | Satellite television system ground station having wideband multi-channel LNB converter/transmitter architecture with controlled uplink transmission |
EP1510018B1 (en) * | 2002-05-29 | 2008-11-12 | Thomson Licensing | Method and apparatus for enabling transmission of a wireless return channel signal in a satellite communications system |
MXPA05000102A (es) * | 2002-06-24 | 2005-06-06 | Qualcomm Inc | Metodo para la sincronizacion de enlace de retorno en un sistema satelital de cdma ortogonal. |
JP3950764B2 (ja) * | 2002-07-31 | 2007-08-01 | 日本電気株式会社 | 無線基地局及びそれに用いる無線フレーム同期検出方法並びにそのプログラム |
JP2004289717A (ja) * | 2003-03-25 | 2004-10-14 | Mitsubishi Electric Corp | ランダムアクセス制御方法、基地局および端末装置 |
US20050095982A1 (en) * | 2003-11-05 | 2005-05-05 | Blanchard Scott D. | MSS user equipment and methods for synchronizing MSS user equipment |
WO2007025439A1 (fr) * | 2005-08-31 | 2007-03-08 | Huawei Technologies Co., Ltd. | Methode d'implementation et equipement de retard de propagation d'une voie d'acces aleatoire physique dans une grande couverture |
US8228957B1 (en) * | 2006-05-26 | 2012-07-24 | Sprint Communications Company L.P. | Differential delay mitigation in diverse backhaul environments |
KR101029099B1 (ko) | 2008-12-31 | 2011-04-13 | 한국과학기술원 | 위성 통신 시스템의 상하향 시간 동기 획득 방법 및 이를 이용한 위성 통신 시스템 |
CN101854729A (zh) * | 2010-03-30 | 2010-10-06 | 中国人民解放军信息工程大学 | 一种卫星通信系统的随机接入方法 |
CN104980244B (zh) * | 2015-07-01 | 2017-07-28 | 大唐电信(成都)信息技术有限公司 | 时间同步设备输入线路延时补偿装置及方法 |
CN107682074B (zh) * | 2017-11-08 | 2024-03-29 | 南京天际易达通信技术有限公司 | 一种卫星上行信号发射时间补偿方法、装置及通信系统 |
US10879952B2 (en) * | 2018-04-18 | 2020-12-29 | Huawei Technologies Co., Ltd. | Apparatus and receiver for performing synchronization in analog spread spectrum systems |
CN109743102B (zh) * | 2019-01-28 | 2021-03-05 | 西安玄黄通信技术有限公司 | 一种微纳卫星的时间基准同步方法及其组网控制方法 |
CN115080498B (zh) * | 2022-07-27 | 2022-11-08 | 成都奇芯微电子有限公司 | 基于卫星导航应用的信号数据存储方法以及存储芯片 |
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US5048053A (en) * | 1989-11-20 | 1991-09-10 | Unisys Corporation | Detecting and tracking circuit for component PN codes |
US5003552A (en) * | 1989-11-20 | 1991-03-26 | Unisys Corporation | Carrier aided code tracking loop |
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US5128957A (en) * | 1990-08-10 | 1992-07-07 | Ricoh Company, Ltd. | Initial acquisition method in spread spectrum system and such system |
US5359624A (en) * | 1993-06-07 | 1994-10-25 | Motorola, Inc. | System and method for chip timing synchronization in an adaptive direct sequence CDMA communication system |
CA2151737C (en) * | 1993-10-14 | 1999-09-28 | Tomohiro Dohi | Correlation detector and communication apparatus |
JP2677191B2 (ja) * | 1994-03-15 | 1997-11-17 | 日本電気株式会社 | Cdma通信方式 |
US5504787A (en) * | 1994-03-23 | 1996-04-02 | Loral Corporation | Coherent sequential PN code extractor |
US5511067A (en) * | 1994-06-17 | 1996-04-23 | Qualcomm Incorporated | Layered channel element in a base station modem for a CDMA cellular communication system |
-
1996
- 1996-08-28 US US08/704,041 patent/US5838669A/en not_active Expired - Lifetime
-
1997
- 1997-04-23 CA CA002203475A patent/CA2203475C/en not_active Expired - Fee Related
- 1997-06-24 SG SG1997002135A patent/SG54523A1/en unknown
- 1997-08-21 EP EP97114478A patent/EP0827293A3/en not_active Withdrawn
- 1997-08-22 BR BR9704484A patent/BR9704484A/pt active Search and Examination
- 1997-08-25 CN CN97117684A patent/CN1182315A/zh active Pending
- 1997-08-25 MX MX9706475A patent/MX9706475A/es not_active IP Right Cessation
- 1997-08-25 AR ARP970103848A patent/AR009318A1/es active IP Right Grant
- 1997-08-26 AU AU35300/97A patent/AU733219B2/en not_active Ceased
- 1997-08-28 JP JP23193497A patent/JP4184459B2/ja not_active Expired - Lifetime
- 1997-08-28 KR KR1019970045785A patent/KR100263109B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US5838669A (en) | 1998-11-17 |
EP0827293A2 (en) | 1998-03-04 |
CA2203475A1 (en) | 1998-02-28 |
KR19980019217A (ko) | 1998-06-05 |
BR9704484A (pt) | 1999-01-26 |
CN1182315A (zh) | 1998-05-20 |
JPH1098447A (ja) | 1998-04-14 |
EP0827293A3 (en) | 2002-07-03 |
MX9706475A (es) | 1998-02-28 |
JP4184459B2 (ja) | 2008-11-19 |
AU3530097A (en) | 1998-03-05 |
SG54523A1 (en) | 1998-11-16 |
CA2203475C (en) | 2000-08-22 |
KR100263109B1 (ko) | 2000-08-01 |
AU733219B2 (en) | 2001-05-10 |
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