WO1997008854A3 - Time division duplex repeater for use in a cdma system - Google Patents

Time division duplex repeater for use in a cdma system Download PDF

Info

Publication number
WO1997008854A3
WO1997008854A3 PCT/US1996/013868 US9613868W WO9708854A3 WO 1997008854 A3 WO1997008854 A3 WO 1997008854A3 US 9613868 W US9613868 W US 9613868W WO 9708854 A3 WO9708854 A3 WO 9708854A3
Authority
WO
WIPO (PCT)
Prior art keywords
spread spectrum
spectrum signal
tdd
time division
division duplex
Prior art date
Application number
PCT/US1996/013868
Other languages
French (fr)
Other versions
WO1997008854A2 (en
Inventor
Lindsay A Weaver Jr
Franklin P Antonio
Richard F Dean
Original Assignee
Qualcomm 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
Priority to CA002229641A priority Critical patent/CA2229641C/en
Priority to JP51055497A priority patent/JP3964461B2/en
Priority to BR9610551-8A priority patent/BR9610551A/en
Priority to AU11146/97A priority patent/AU718662B2/en
Priority to DE69627353T priority patent/DE69627353T2/en
Priority to AT96941935T priority patent/ATE237204T1/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to IL12344296A priority patent/IL123442A/en
Priority to EP96941935A priority patent/EP0847634B1/en
Publication of WO1997008854A2 publication Critical patent/WO1997008854A2/en
Publication of WO1997008854A3 publication Critical patent/WO1997008854A3/en
Priority to FI980278A priority patent/FI115581B/en
Priority to HK98110009A priority patent/HK1010949A1/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/46TPC being performed in particular situations in multi hop networks, e.g. wireless relay networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/14Relay systems
    • H04B7/15Active relay systems
    • H04B7/155Ground-based stations
    • H04B7/15528Control of operation parameters of a relay station to exploit the physical medium
    • H04B7/15535Control of relay amplifier gain
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603Arrangements for wireless physical layer control
    • H04B7/2606Arrangements for base station coverage control, e.g. by using relays in tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2618Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid code-time division multiple access [CDMA-TDMA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/26Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/40TPC being performed in particular situations during macro-diversity or soft handoff

Abstract

A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.
PCT/US1996/013868 1995-08-31 1996-08-29 Time division duplex repeater for use in a cdma system WO1997008854A2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP51055497A JP3964461B2 (en) 1995-08-31 1996-08-29 Time division duplex repeater for use in a CDMA system
BR9610551-8A BR9610551A (en) 1995-08-31 1996-08-29 Duplex time division repeater for use in a cdma system
AU11146/97A AU718662B2 (en) 1995-08-31 1996-08-29 Time division duplex repeater for use in a CDMA system
DE69627353T DE69627353T2 (en) 1995-08-31 1996-08-29 DUPLEX AMPLIFIER WITH TIME INTERLOCKING FOR CDMA ARRANGEMENT
AT96941935T ATE237204T1 (en) 1995-08-31 1996-08-29 DUPLEX AMPLIFIER WITH TIME NESTING FOR CDMA ARRANGEMENT
CA002229641A CA2229641C (en) 1995-08-31 1996-08-29 Time division duplex repeater for use in a cdma system
IL12344296A IL123442A (en) 1995-08-31 1996-08-29 Time division duplex repeater for use in a cdma system
EP96941935A EP0847634B1 (en) 1995-08-31 1996-08-29 Time division duplex repeater for use in a cdma system
FI980278A FI115581B (en) 1995-08-31 1998-02-06 Method and apparatus for amplifying a spread spectrum signal
HK98110009A HK1010949A1 (en) 1995-08-31 1998-08-19 Time division duplex repeater for use in a cdma system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/522,469 US6108364A (en) 1995-08-31 1995-08-31 Time division duplex repeater for use in a CDMA system
US08/522,469 1995-08-31

Publications (2)

Publication Number Publication Date
WO1997008854A2 WO1997008854A2 (en) 1997-03-06
WO1997008854A3 true WO1997008854A3 (en) 1997-06-19

Family

ID=24080988

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/013868 WO1997008854A2 (en) 1995-08-31 1996-08-29 Time division duplex repeater for use in a cdma system

Country Status (14)

Country Link
US (1) US6108364A (en)
EP (1) EP0847634B1 (en)
JP (2) JP3964461B2 (en)
KR (1) KR100399810B1 (en)
CN (1) CN1196279C (en)
AT (1) ATE237204T1 (en)
AU (1) AU718662B2 (en)
BR (1) BR9610551A (en)
CA (1) CA2229641C (en)
DE (1) DE69627353T2 (en)
FI (1) FI115581B (en)
HK (1) HK1010949A1 (en)
IL (1) IL123442A (en)
WO (1) WO1997008854A2 (en)

Families Citing this family (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5787344A (en) 1994-06-28 1998-07-28 Scheinert; Stefan Arrangements of base transceiver stations of an area-covering network
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US6108364A (en) * 1995-08-31 2000-08-22 Qualcomm Incorporated Time division duplex repeater for use in a CDMA system
US6020402A (en) 1995-09-15 2000-02-01 Cabot Corporation Silicone rubber compositions incorporating silicon-treated carbon blacks
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
DE19649855B4 (en) * 1996-12-02 2004-08-05 T-Mobile Deutschland Gmbh Repeater for radio signals
KR100233836B1 (en) * 1997-08-21 1999-12-01 정선종 Modulation apparatus of mc dsss system
EP1034683A1 (en) * 1997-11-26 2000-09-13 QUALCOMM Incorporated Method and apparatus for performing handoff in a cdma system through the use of repeaters
CA2254401A1 (en) * 1997-12-15 1999-06-15 Lucent Technologies Inc. Methodology of reducing areas with multiple dominant pilots by installing simulcasting elements or omni-directional base station
JP3881770B2 (en) 1998-03-10 2007-02-14 松下電器産業株式会社 Mobile station apparatus and communication method
US6381230B1 (en) 1998-07-28 2002-04-30 Qualcomm Incorporated Method and system for providing personal base station communications
US6411819B1 (en) * 1998-11-19 2002-06-25 Scoreboard, Inc. Method of modeling a neighbor list for a mobile unit in a CDMA cellular telephone system
DE19902407A1 (en) * 1999-01-22 2000-08-17 Mikom Gmbh Mikrotechnik Zur Ko Method and device for adjusting the gain of a repeater
US6917597B1 (en) * 1999-07-30 2005-07-12 Texas Instruments Incorporated System and method of communication using transmit antenna diversity based upon uplink measurement for the TDD mode of WCDMA
US6570858B1 (en) * 1999-11-01 2003-05-27 Motorola, Inc. Satellite-based communications system with terrestrial repeater and method therefor
US6385435B1 (en) * 2000-04-20 2002-05-07 Jhong Sam Lee Coupled interference concellation system for wideband repeaters in a cellular system
US6351236B1 (en) * 2000-04-25 2002-02-26 Agilent Technologies, Inc. Combined GPS and CDMA in a mobile transceiver
US6501955B1 (en) * 2000-06-19 2002-12-31 Intel Corporation RF signal repeater, mobile unit position determination system using the RF signal repeater, and method of communication therefor
KR100703286B1 (en) * 2000-10-10 2007-04-03 삼성전자주식회사 Method for generating phase modulation sequence in a mobile communication thereof phase modulation device
US7039418B2 (en) * 2000-11-16 2006-05-02 Qualcomm Incorporated Position determination in a wireless communication system with detection and compensation for repeaters
US7016332B2 (en) * 2000-12-05 2006-03-21 Science Applications International Corporation Method and system for a remote downlink transmitter for increasing the capacity of a multiple access interference limited spread-spectrum wireless network
US7061891B1 (en) 2001-02-02 2006-06-13 Science Applications International Corporation Method and system for a remote downlink transmitter for increasing the capacity and downlink capability of a multiple access interference limited spread-spectrum wireless network
US7113745B2 (en) * 2001-02-21 2006-09-26 Ericsson Inc. Method to achieve diversity in a communication network
WO2002080382A1 (en) 2001-03-30 2002-10-10 Science Applications International Corporation Multistage reception of code division multiple access transmissions
KR100419789B1 (en) * 2001-08-10 2004-02-21 주식회사 텔레매틱스 Apparatus for Interexchanging Multi-Path of Mobile Communication System using Delay Process
US7006461B2 (en) * 2001-09-17 2006-02-28 Science Applications International Corporation Method and system for a channel selective repeater with capacity enhancement in a spread-spectrum wireless network
US7924751B2 (en) * 2001-11-20 2011-04-12 Qualcomm Incorporated Reverse link power controlled repeater
GB0200237D0 (en) * 2002-01-07 2002-02-20 Imec Inter Uni Micro Electr Wireless cellular network architecture
US6904266B1 (en) * 2002-02-19 2005-06-07 Navini Networks, Inc. Wireless enhancer using a switch matrix
US7010325B1 (en) 2002-06-11 2006-03-07 Sprint Spectrum L.P. Wireless repeater with wireless telephone adapter
US8498234B2 (en) 2002-06-21 2013-07-30 Qualcomm Incorporated Wireless local area network repeater
US8885688B2 (en) 2002-10-01 2014-11-11 Qualcomm Incorporated Control message management in physical layer repeater
AU2003274992A1 (en) 2002-10-11 2004-05-04 Widefi, Inc. Reducing loop effects in a wireless local area network repeater
ATE402527T1 (en) 2002-10-15 2008-08-15 Qualcomm Inc WLAN REPEATER WITH AUTOMATIC GAIN CONTROL FOR EXTENDED NETWORK COVERAGE
US8078100B2 (en) 2002-10-15 2011-12-13 Qualcomm Incorporated Physical layer repeater with discrete time filter for all-digital detection and delay generation
US7230935B2 (en) * 2002-10-24 2007-06-12 Widefi, Inc. Physical layer repeater with selective use of higher layer functions based on network operating conditions
US7831263B2 (en) * 2002-11-08 2010-11-09 Qualcomm Incorporated Apparatus and method for determining the location of a repeater
JP2006506897A (en) * 2002-11-15 2006-02-23 ワイデファイ インコーポレイテッド Wireless local area network detection repeater
JP2004179801A (en) * 2002-11-25 2004-06-24 Keio Gijuku Uwb relaying apparatus and uwb communication apparatus
AU2003300938A1 (en) 2002-12-16 2004-07-29 Widefi, Inc. Improved wireless network repeater
US20040146013A1 (en) * 2003-01-22 2004-07-29 Hong Kong Applied Science And Technology Research Institute Co., Ltd Wireless local area network time division duplex relay system with high speed automatic up-link and down-link detection
US7016688B2 (en) * 2003-02-24 2006-03-21 Qualcomm, Incorporated Forward link repeater delay watermarking system
US6961367B2 (en) * 2003-02-24 2005-11-01 Qualcomm, Incorporated Forward link repeater frequency watermarking scheme
KR100492564B1 (en) * 2003-03-05 2005-06-03 엘지전자 주식회사 A method of decision threshold value for output power on/off control in mobile phone
KR20040090603A (en) * 2003-04-17 2004-10-26 주식회사 맥스웨이브 One channel multi-repeater system
CN1225849C (en) * 2003-07-18 2005-11-02 大唐移动通信设备有限公司 Method and device for proceeding bidirectional synchronous translate against radio signal
KR100694631B1 (en) * 2003-11-25 2007-03-13 에스케이 텔레콤주식회사 Method and Apparatus for Radio Frequency Signal Detection RF repeater in Time Division Duplex
US7196594B2 (en) * 2004-01-29 2007-03-27 Triquint, Inc. Surface acoustic wave duplexer having enhanced isolation performance
WO2005103753A1 (en) * 2004-04-05 2005-11-03 Qualcomm Incorporated Repeater with positioning capabilities
EP1733569A4 (en) * 2004-04-05 2009-12-16 Qualcomm Inc Repeater that reports detected neighbors
US8027642B2 (en) 2004-04-06 2011-09-27 Qualcomm Incorporated Transmission canceller for wireless local area network
EP1745567B1 (en) * 2004-05-13 2017-06-14 QUALCOMM Incorporated Non-frequency translating repeater with detection and media access control
KR20070026558A (en) 2004-06-03 2007-03-08 위데피, 인코포레이티드 Frequency translating repeater with low cost high performance local oscillator architecture
US7778596B2 (en) 2004-07-29 2010-08-17 Qualcomm Incorporated Airlink sensing watermarking repeater
US8059727B2 (en) 2005-01-28 2011-11-15 Qualcomm Incorporated Physical layer repeater configuration for increasing MIMO performance
US7233770B2 (en) * 2005-03-07 2007-06-19 Harris Corporation Communications system using separate receive and transmit frequency hopping hopsets
US7706789B2 (en) * 2005-03-31 2010-04-27 Intel Corporation Techniques to manage roaming
WO2006107136A1 (en) * 2005-04-08 2006-10-12 Kt Corporation Apparatus and method for detecting preamble and rf repeating system using the same
KR20070001791A (en) * 2005-06-29 2007-01-04 이시동 Adaptive gps tdd repeater and method
US20070268846A1 (en) * 2006-03-31 2007-11-22 Widefi, Inc. Enhanced physical layer repeater for operation in WiMAX systems
GB2439609B (en) * 2006-06-28 2010-04-14 Motorola Inc Relaying in wireless communication sytems
JP4907260B2 (en) * 2006-08-18 2012-03-28 富士通株式会社 Radio relay system, radio relay station apparatus, and radio communication method
US8559379B2 (en) 2006-09-21 2013-10-15 Qualcomm Incorporated Method and apparatus for mitigating oscillation between repeaters
WO2008057290A1 (en) 2006-10-26 2008-05-15 Qualcomm Incorporated Repeater techniques for multiple input multiple output utilizing beam formers
US8078286B2 (en) 2006-11-30 2011-12-13 Biosense Webster, Inc. Techniques for minimizing radiofrequency-induced tissue heating
US8750786B2 (en) 2007-12-21 2014-06-10 Telefonaktiebolaget Lm Ericsson (Publ) Forwarding node in a wireless communication system
EP2086269B1 (en) * 2008-01-31 2017-03-15 Mediatek Inc. A transmit power controller
US7773664B2 (en) * 2008-03-18 2010-08-10 On-Ramp Wireless, Inc. Random phase multiple access system with meshing
US7733945B2 (en) * 2008-03-18 2010-06-08 On-Ramp Wireless, Inc. Spread spectrum with doppler optimization
US7526013B1 (en) * 2008-03-18 2009-04-28 On-Ramp Wireless, Inc. Tag communications with access point
US20100195553A1 (en) 2008-03-18 2010-08-05 Myers Theodore J Controlling power in a spread spectrum system
US20090239550A1 (en) * 2008-03-18 2009-09-24 Myers Theodore J Random phase multiple access system with location tracking
US8520721B2 (en) 2008-03-18 2013-08-27 On-Ramp Wireless, Inc. RSSI measurement mechanism in the presence of pulsed jammers
US8958460B2 (en) 2008-03-18 2015-02-17 On-Ramp Wireless, Inc. Forward error correction media access control system
US8477830B2 (en) 2008-03-18 2013-07-02 On-Ramp Wireless, Inc. Light monitoring system using a random phase multiple access system
DE102008017881B9 (en) * 2008-04-09 2012-11-08 Andrew Wireless Systems Gmbh TDD repeater for a wireless network and method for operating such a repeater
US8576900B2 (en) 2008-06-15 2013-11-05 Lg Electronics Inc. Method and apparatus for transmitting and receiving signal from relay station in radio communication system
WO2010093221A2 (en) * 2009-02-16 2010-08-19 엘지전자주식회사 Method and apparatus for transmitting and receiving signal from relay station in radio communication system
KR101595131B1 (en) * 2009-02-16 2016-02-18 엘지전자 주식회사 Method and apparatus of transmitting or receiving signal for relay station in wireless communication system
US8363699B2 (en) 2009-03-20 2013-01-29 On-Ramp Wireless, Inc. Random timing offset determination
JP5364048B2 (en) * 2010-07-07 2013-12-11 株式会社エヌ・ティ・ティ・ドコモ Base station apparatus and method
CN109309522B (en) * 2017-07-28 2021-12-03 广州极飞科技股份有限公司 Method, device and system for signal transmission and unmanned aerial vehicle positioning
US10608678B1 (en) * 2019-05-31 2020-03-31 Qualcomm Incorporated Bidirectional repeaters for time division duplexed millimeter wave systems
US11863219B2 (en) 2019-08-20 2024-01-02 Shanghai United Imaging Healthcare Co., Ltd. Radio frequency power amplifier control device
US11165453B2 (en) * 2019-08-20 2021-11-02 Shanghai United Imaging Healthcare Co., Ltd. Radio frequency power amplifier control device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409538A2 (en) * 1989-07-20 1991-01-23 AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL INC. Spread spectrum signal demodulator
US5081643A (en) * 1990-11-16 1992-01-14 Scs Mobilecom, Inc. Spread spectrum multipath receiver apparatus and method
US5170412A (en) * 1990-11-22 1992-12-08 Ascom Tech Ag. Multiple access method
EP0536068A1 (en) * 1991-10-02 1993-04-07 Alcatel Espace Low orbit satellite communication system with terminals as destination

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58182928A (en) * 1982-04-20 1983-10-26 Nec Corp Radio repeating system
US4901307A (en) * 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
JPH0650832B2 (en) * 1987-05-29 1994-06-29 日本電気株式会社 Relay device
US5101501A (en) * 1989-11-07 1992-03-31 Qualcomm Incorporated Method and system for providing a soft handoff in communications in a cdma cellular telephone system
US5109390A (en) * 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
US5267262A (en) * 1989-11-07 1993-11-30 Qualcomm Incorporated Transmitter power control system
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5195090A (en) * 1991-07-09 1993-03-16 At&T Bell Laboratories Wireless access telephone-to-telephone network interface architecture
US5184347A (en) * 1991-07-09 1993-02-02 At&T Bell Laboratories Adaptive synchronization arrangement
CA2066538C (en) * 1991-07-09 1997-12-23 Brian David Bolliger Mobile-telephone system call processing arrangement
US5267261A (en) * 1992-03-05 1993-11-30 Qualcomm Incorporated Mobile station assisted soft handoff in a CDMA cellular communications system
US5295153A (en) * 1992-04-13 1994-03-15 Telefonaktiebolaget L M Ericsson CDMA frequency allocation
US5590173A (en) * 1992-08-05 1996-12-31 Beasley; Andrew S. Delay insensitive base station-to-handset interface for radio telephone systems
JP3266342B2 (en) * 1992-12-15 2002-03-18 日本電信電話株式会社 Wireless relay method and wireless relay device using the method
US5438565A (en) * 1993-03-31 1995-08-01 At&T Corp. Packet switch to provide code division, multiple access cellular service
CA2146445C (en) * 1993-08-06 1999-06-01 Fumiyuki Adachi Receiver and repeater for spread-spectrum communications
US5519691A (en) * 1994-06-03 1996-05-21 At&T Corp. Arrangement for and method of providing radio frequency access to a switching system
US5592481A (en) * 1995-06-06 1997-01-07 Globalstar L.P. Multiple satellite repeater capacity loading with multiple spread spectrum gateway antennas
US6108364A (en) * 1995-08-31 2000-08-22 Qualcomm Incorporated Time division duplex repeater for use in a CDMA system
JP2002306942A (en) * 2001-04-11 2002-10-22 Earth Clean Kk Globe digester
JP2004130235A (en) * 2002-10-10 2004-04-30 Tagami Toyomi Apparatus and method for reducing volume of waste
ES2626108T3 (en) * 2005-05-27 2017-07-24 Miyashiro, Tomonao Apparatus for the treatment of organic waste and method to separate and recover liquid materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0409538A2 (en) * 1989-07-20 1991-01-23 AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL INC. Spread spectrum signal demodulator
US5081643A (en) * 1990-11-16 1992-01-14 Scs Mobilecom, Inc. Spread spectrum multipath receiver apparatus and method
US5170412A (en) * 1990-11-22 1992-12-08 Ascom Tech Ag. Multiple access method
EP0536068A1 (en) * 1991-10-02 1993-04-07 Alcatel Espace Low orbit satellite communication system with terminals as destination

Also Published As

Publication number Publication date
JP3964461B2 (en) 2007-08-22
WO1997008854A2 (en) 1997-03-06
AU718662B2 (en) 2000-04-20
CN1196279C (en) 2005-04-06
CN1229545A (en) 1999-09-22
IL123442A (en) 2002-07-25
HK1010949A1 (en) 1999-07-02
FI980278A (en) 1998-04-27
EP0847634A2 (en) 1998-06-17
DE69627353T2 (en) 2004-03-04
ATE237204T1 (en) 2003-04-15
BR9610551A (en) 1999-12-21
CA2229641C (en) 2006-05-02
JP4571652B2 (en) 2010-10-27
FI980278A0 (en) 1998-02-06
MX9801621A (en) 1998-08-30
KR100399810B1 (en) 2003-12-31
KR19990044217A (en) 1999-06-25
JP2000502218A (en) 2000-02-22
FI115581B (en) 2005-05-31
IL123442A0 (en) 1999-11-30
DE69627353D1 (en) 2003-05-15
EP0847634B1 (en) 2003-04-09
US6108364A (en) 2000-08-22
AU1114697A (en) 1997-03-19
CA2229641A1 (en) 1997-03-06
JP2007110754A (en) 2007-04-26

Similar Documents

Publication Publication Date Title
WO1997008854A3 (en) Time division duplex repeater for use in a cdma system
MY123539A (en) Method and apparatus for efficient synchronization in spread spectrum communications
DK1043844T3 (en) Communication station, method and network for power management in spread spectrum systems
EP0827293A3 (en) Method of synchronizing satellite switched CDMA communication system
WO2001073965A3 (en) Apparatus, system and method in an impulse radio communications system
GB2342544A (en) Power control apparatus, and an associated method, for tdma transmitter
CA2176401A1 (en) A high-data-rate wireless local-area network
CA2041913A1 (en) Phase controlled synchronization for direct sequence spread-spectrum communication systems
EP0909042A3 (en) Despreading of multiple independent CDMA sources in satellite communication system
CA2259351A1 (en) A method of controlling initial power ramp-up in cdma systems by using short codes
EP0817396A3 (en) Spread spectrum communications system with transmitted reference
HK1052593A1 (en) Method and apparatus for transmitting pilot reference from a plurality of transmission sources
AU6154200A (en) Method and device for the wireless transmission of information between a base station and a plurality of sensors
EVANS Measured effects of repeater jamming on direct-sequence spread spectrum receivers that use envelope detectors(M. S. Thesis)

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 96196621.1

Country of ref document: CN

AK Designated states

Kind code of ref document: A2

Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA

AK Designated states

Kind code of ref document: A3

Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWE Wipo information: entry into national phase

Ref document number: 980278

Country of ref document: FI

WWE Wipo information: entry into national phase

Ref document number: 1996941935

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 1199800151

Country of ref document: VN

ENP Entry into the national phase

Ref document number: 2229641

Country of ref document: CA

Ref document number: 2229641

Country of ref document: CA

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 1997 510554

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: PA/a/1998/001621

Country of ref document: MX

Ref document number: 1019980701453

Country of ref document: KR

WWP Wipo information: published in national office

Ref document number: 1996941935

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1019980701453

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 1996941935

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1019980701453

Country of ref document: KR

WWG Wipo information: grant in national office

Ref document number: 980278

Country of ref document: FI