CN1310893A - Ocdma卫星通信系统功率通量密度抑制 - Google Patents

Ocdma卫星通信系统功率通量密度抑制 Download PDF

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Publication number
CN1310893A
CN1310893A CN99808840A CN99808840A CN1310893A CN 1310893 A CN1310893 A CN 1310893A CN 99808840 A CN99808840 A CN 99808840A CN 99808840 A CN99808840 A CN 99808840A CN 1310893 A CN1310893 A CN 1310893A
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CN
China
Prior art keywords
signal
wave beam
subcarrier
quadrature
receiver
Prior art date
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Pending
Application number
CN99808840A
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English (en)
Chinese (zh)
Inventor
J·奥尔森
F·D·纳塔利
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.)
Nokia of America Corp
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Stanford Telecommunications Inc
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 Stanford Telecommunications Inc filed Critical Stanford Telecommunications Inc
Publication of CN1310893A publication Critical patent/CN1310893A/zh
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
CN99808840A 1998-05-19 1999-05-18 Ocdma卫星通信系统功率通量密度抑制 Pending CN1310893A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/080,952 1998-05-19
US09/080,952 US6075781A (en) 1997-12-12 1998-05-19 Flux density reduction in OCDMA satellite communication system

Publications (1)

Publication Number Publication Date
CN1310893A true CN1310893A (zh) 2001-08-29

Family

ID=22160721

Family Applications (1)

Application Number Title Priority Date Filing Date
CN99808840A Pending CN1310893A (zh) 1998-05-19 1999-05-18 Ocdma卫星通信系统功率通量密度抑制

Country Status (7)

Country Link
US (1) US6075781A (enExample)
EP (1) EP1077006B1 (enExample)
JP (1) JP4527879B2 (enExample)
CN (1) CN1310893A (enExample)
AU (1) AU4952099A (enExample)
DE (1) DE69934883T2 (enExample)
WO (1) WO1999060806A1 (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101795493A (zh) * 2010-03-12 2010-08-04 清华大学 一种适用于geo卫星移动通信系统的星上处理交换系统
CN101485215B (zh) * 2006-07-07 2012-01-11 艾利森电话股份有限公司 使用波束成形的无线通信系统中的资源调度
US8185043B2 (en) 2005-02-18 2012-05-22 Panasonic Corporation Wireless communication method, relay station apparatus, and wireless transmitting apparatus
CN102664722A (zh) * 2005-09-30 2012-09-12 三菱电机株式会社 无线通信系统及无线通信方法
US9065596B2 (en) 2005-09-30 2015-06-23 Mitsubishi Electric Corporation Wireless communication system and wireless communication method
CN111936879A (zh) * 2018-04-06 2020-11-13 高通股份有限公司 用于导航和定位信号的分离的正交频分复用
CN117978254A (zh) * 2024-03-07 2024-05-03 北京蓝凌星通科技有限公司 基于多条幅阵列天线的低轨蓝牙卫星正交调制方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6711121B1 (en) * 1998-10-09 2004-03-23 At&T Corp. Orthogonal code division multiplexing for twisted pair channels
CA2276971A1 (en) * 1999-07-06 2001-01-06 Wen Tong Preamble using golay sequence for access channel in cellular communications systems
US7471735B2 (en) * 2001-04-27 2008-12-30 The Directv Group, Inc. Maximizing power and spectral efficiencies for layered and conventional modulations
US7583728B2 (en) 2002-10-25 2009-09-01 The Directv Group, Inc. Equalizers for layered modulated and other signals
US7423987B2 (en) * 2001-04-27 2008-09-09 The Directv Group, Inc. Feeder link configurations to support layered modulation for digital signals
GB0320352D0 (en) * 2003-09-01 2003-10-01 Secr Defence Digital modulation waveforms for use in ranging systems

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5856290B2 (ja) * 1979-04-04 1983-12-14 日本電信電話株式会社 移動無線通信方式
US5208829A (en) * 1991-03-26 1993-05-04 Hughes Aircraft Company Communication satellite system having an increased power output density per unit of bandwidth
US5687166A (en) * 1992-11-24 1997-11-11 Stanford Telecommunications, Inc. Modulation system for spread spectrum CDMA communication
US5473601A (en) * 1993-10-21 1995-12-05 Hughes Aircraft Company Frequency reuse technique for a high data rate satellite communication system
US5619503A (en) * 1994-01-11 1997-04-08 Ericsson Inc. Cellular/satellite communications system with improved frequency re-use
US5649318A (en) * 1995-03-24 1997-07-15 Terrastar, Inc. Apparatus for converting an analog c-band broadcast receiver into a system for simultaneously receiving analog and digital c-band broadcast television signals
US5638361A (en) * 1995-02-08 1997-06-10 Stanford Telecommunications, Inc. Frequency hopped return link with net entry channel for a satellite personal communications system
US5623485A (en) * 1995-02-21 1997-04-22 Lucent Technologies Inc. Dual mode code division multiple access communication system and method
US5623487A (en) * 1995-05-19 1997-04-22 Stanford Telecommunications, Inc. Doubly orthogonal code and frequency division multiple access communication system
US5764630A (en) * 1996-03-25 1998-06-09 Stanford Telecommunications, Inc. Forward link carrier recovery in an OCDMA spread spectrum communication system without a pilot tone
US6134215A (en) * 1996-04-02 2000-10-17 Qualcomm Incorpoated Using orthogonal waveforms to enable multiple transmitters to share a single CDM channel
JP3426888B2 (ja) * 1996-12-25 2003-07-14 日本電信電話株式会社 マルチビーム通信方法およびマルチビーム通信装置

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8185043B2 (en) 2005-02-18 2012-05-22 Panasonic Corporation Wireless communication method, relay station apparatus, and wireless transmitting apparatus
US8422941B2 (en) 2005-02-18 2013-04-16 Panasonic Corporation Radio communication method
CN102664722A (zh) * 2005-09-30 2012-09-12 三菱电机株式会社 无线通信系统及无线通信方法
US9065596B2 (en) 2005-09-30 2015-06-23 Mitsubishi Electric Corporation Wireless communication system and wireless communication method
CN102664722B (zh) * 2005-09-30 2015-11-25 三菱电机株式会社 无线通信系统及无线通信方法
CN101485215B (zh) * 2006-07-07 2012-01-11 艾利森电话股份有限公司 使用波束成形的无线通信系统中的资源调度
CN101795493A (zh) * 2010-03-12 2010-08-04 清华大学 一种适用于geo卫星移动通信系统的星上处理交换系统
CN101795493B (zh) * 2010-03-12 2012-12-26 清华大学 一种适用于geo卫星移动通信系统的星上处理交换系统
CN111936879A (zh) * 2018-04-06 2020-11-13 高通股份有限公司 用于导航和定位信号的分离的正交频分复用
CN111936879B (zh) * 2018-04-06 2023-11-28 高通股份有限公司 用于导航和定位信号的分离的正交频分复用
CN117978254A (zh) * 2024-03-07 2024-05-03 北京蓝凌星通科技有限公司 基于多条幅阵列天线的低轨蓝牙卫星正交调制方法

Also Published As

Publication number Publication date
WO1999060806A1 (en) 1999-11-25
DE69934883D1 (de) 2007-03-08
EP1077006A4 (en) 2004-03-24
JP2002516548A (ja) 2002-06-04
US6075781A (en) 2000-06-13
DE69934883T2 (de) 2007-10-11
JP4527879B2 (ja) 2010-08-18
EP1077006B1 (en) 2007-01-17
AU4952099A (en) 1999-12-06
EP1077006A1 (en) 2001-02-21

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