IL139057A - Method and device for reducing the power of a pilot signal in a CDMA system - Google Patents

Method and device for reducing the power of a pilot signal in a CDMA system

Info

Publication number
IL139057A
IL139057A IL13905799A IL13905799A IL139057A IL 139057 A IL139057 A IL 139057A IL 13905799 A IL13905799 A IL 13905799A IL 13905799 A IL13905799 A IL 13905799A IL 139057 A IL139057 A IL 139057A
Authority
IL
Israel
Prior art keywords
signal
channel
despread
pilot
phase
Prior art date
Application number
IL13905799A
Other languages
English (en)
Hebrew (he)
Other versions
IL139057A0 (en
Original Assignee
Interdigital Tech Corp
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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of IL139057A0 publication Critical patent/IL139057A0/xx
Publication of IL139057A publication Critical patent/IL139057A/en

Links

Classifications

    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • 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
    • 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
    • H04B1/7073—Synchronisation aspects
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70755—Setting of lock conditions, e.g. threshold
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • 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
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0063—Elements of loops
    • H04L2027/0067—Phase error detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Radio Relay Systems (AREA)
IL13905799A 1998-05-14 1999-01-27 Method and device for reducing the power of a pilot signal in a CDMA system IL139057A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/078,417 US6366607B1 (en) 1998-05-14 1998-05-14 Processing for improved performance and reduced pilot
PCT/US1999/001794 WO1999059259A1 (en) 1998-05-14 1999-01-27 Multipath cdma receiver for reduced pilot

Publications (2)

Publication Number Publication Date
IL139057A0 IL139057A0 (en) 2001-11-25
IL139057A true IL139057A (en) 2005-12-18

Family

ID=22143895

Family Applications (1)

Application Number Title Priority Date Filing Date
IL13905799A IL139057A (en) 1998-05-14 1999-01-27 Method and device for reducing the power of a pilot signal in a CDMA system

Country Status (15)

Country Link
US (10) US6366607B1 (de)
EP (3) EP1076938B1 (de)
JP (2) JP4004229B2 (de)
KR (1) KR100629701B1 (de)
CN (3) CN100530995C (de)
AT (2) ATE262240T1 (de)
AU (1) AU2477699A (de)
BR (1) BR9910412A (de)
CA (1) CA2330703A1 (de)
DE (2) DE69915714T2 (de)
ES (2) ES2189387T3 (de)
IL (1) IL139057A (de)
SG (1) SG111970A1 (de)
TR (1) TR200003340T2 (de)
WO (1) WO1999059259A1 (de)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6259687B1 (en) * 1997-10-31 2001-07-10 Interdigital Technology Corporation Communication station with multiple antennas
US6366607B1 (en) * 1998-05-14 2002-04-02 Interdigital Technology Corporation Processing for improved performance and reduced pilot
US6498784B1 (en) 1998-10-20 2002-12-24 Interdigital Technology Corporation Cancellation of pilot and traffic signals
US8180675B2 (en) * 2000-08-31 2012-05-15 Prime Research Alliance E., Inc. System and method for automatically managing avail inventory data and avail pricing
KR100318950B1 (ko) * 1998-12-26 2001-12-29 윤종용 멀티코드 이동통신시스템에서 왜곡 보상장치 및 방법
JP2001016135A (ja) 1999-06-29 2001-01-19 Nec Corp 自動周波数制御方法と自動周波数制御方式とｃｄｍａ受信機
JP3715141B2 (ja) * 1999-07-13 2005-11-09 松下電器産業株式会社 通信端末装置
US6560299B1 (en) * 1999-07-30 2003-05-06 Christopher H Strolle Diversity receiver with joint signal processing
KR20010035967A (ko) * 1999-10-05 2001-05-07 서평원 코드분할다중접속 시스템의 다중 사용자 신호 동기 획득 장치 및 그 방법
US6621857B1 (en) 1999-12-31 2003-09-16 Thomson Licensing S.A. Carrier tracking loop for direct sequence spread spectrum systems
BR0109904A (pt) * 2000-03-28 2004-03-30 Interdigital Tech Corp Sistema de cdma que utiliza rotação prévia antes da transmissão
DE10052392A1 (de) * 2000-10-20 2002-05-02 Alcatel Sa Basisstation eines funkbetriebenen Kommunikationssystems
FR2816776B1 (fr) * 2000-11-10 2003-02-07 Cit Alcatel Procede de correction de l'erreur de frequence
US6754253B2 (en) * 2000-11-29 2004-06-22 Ericsson Inc. Receiver architecture for transmit diversity in CDMA system
US7069545B2 (en) * 2000-12-29 2006-06-27 Intel Corporation Quantization and compression for computation reuse
US6990137B2 (en) * 2001-05-17 2006-01-24 Qualcomm, Incorporated System and method for received signal prediction in wireless communications systems
US7170924B2 (en) * 2001-05-17 2007-01-30 Qualcomm, Inc. System and method for adjusting combiner weights using an adaptive algorithm in wireless communications system
US7333530B1 (en) * 2001-08-06 2008-02-19 Analog Devices, Inc. Despread signal recovery in digital signal processors
US7230975B2 (en) * 2001-08-07 2007-06-12 Qualcomm Incorporated Adaptive pilot filter for a wireless communication system
WO2003032546A1 (en) * 2001-09-28 2003-04-17 Fujitsu Limited Channel inferring device and method
US7023902B2 (en) * 2001-11-06 2006-04-04 Qualcomm Inc. Apparatus and method for scalable offline CDMA demodulation
US7801085B1 (en) * 2002-06-03 2010-09-21 Ericsson Ab System and method of processing CDMA signals
US7130329B2 (en) * 2002-07-08 2006-10-31 Qualcomm Incorporated Apparatus and method for radio frequency tracking and acquisition
AU2002354332A1 (en) * 2002-11-08 2004-06-07 Pirelli And C.S.P.A. Optical communication line and system with reduced polarization mode dispersion
US7180963B2 (en) * 2002-11-25 2007-02-20 Ali Corporation Digital receiver capable of processing modulated signals at various data rates
US7302233B2 (en) * 2003-06-23 2007-11-27 Texas Instruments Incorporated Multiuser detection for wireless communications systems in the presence of interference
JP4183613B2 (ja) * 2003-12-26 2008-11-19 三洋電機株式会社 受信方法および装置
CN1300949C (zh) * 2004-06-07 2007-02-14 东南大学 一种切普均衡器与瑞克接收机并行接收的方法
GB0420184D0 (en) 2004-09-10 2004-10-13 Ttp Communications Ltd Method and apparatus for selecting a channel filter for a communication system
JP4886276B2 (ja) * 2005-11-17 2012-02-29 ザインエレクトロニクス株式会社 クロックデータ復元装置
US7764728B2 (en) * 2006-10-18 2010-07-27 Via Technologies, Inc. Apparatus and method for reducing complexity of matched filter
US7868819B2 (en) * 2007-09-07 2011-01-11 The Board Of Trustees Of The Leland Stanford Junior University Arrangements for satellite-based navigation and methods therefor
US7990929B2 (en) * 2007-11-27 2011-08-02 Harris Corporation Wireless communications device including rake finger stage providing frequency correction and related methods
US8520721B2 (en) 2008-03-18 2013-08-27 On-Ramp Wireless, Inc. RSSI measurement mechanism in the presence of pulsed jammers
US20090239550A1 (en) * 2008-03-18 2009-09-24 Myers Theodore J Random phase multiple access system with location tracking
US8477830B2 (en) 2008-03-18 2013-07-02 On-Ramp Wireless, Inc. Light monitoring system using a random phase multiple access system
US7733945B2 (en) 2008-03-18 2010-06-08 On-Ramp Wireless, Inc. Spread spectrum with doppler optimization
US7593452B1 (en) 2008-03-18 2009-09-22 On-Ramp Wireless, Inc. Despreading spread spectrum data
US8958460B2 (en) 2008-03-18 2015-02-17 On-Ramp Wireless, Inc. Forward error correction media access control system
US7773664B2 (en) 2008-03-18 2010-08-10 On-Ramp Wireless, Inc. Random phase multiple access system with meshing
US8363699B2 (en) 2009-03-20 2013-01-29 On-Ramp Wireless, Inc. Random timing offset determination
US7639726B1 (en) 2009-03-20 2009-12-29 On-Ramp Wireless, Inc. Downlink communication
US7702290B1 (en) 2009-04-08 2010-04-20 On-Ramp Wirless, Inc. Dynamic energy control
US9044525B2 (en) 2011-06-29 2015-06-02 Nippon Shokubai Co., Ltd. Polyacrylic acid (salt)-based water absorbent resin powder and method for producing the same
CN108897014A (zh) * 2018-07-25 2018-11-27 航天恒星科技有限公司 一种无模糊度接收boc导航信号的抗多径方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5579338A (en) 1992-06-29 1996-11-26 Mitsubishi Denki Kabushiki Kaisha Spread spectrum receiver using partial correlations
CN1068477C (zh) 1993-08-06 2001-07-11 Ntt移运通信网株式会社 扩频通信的接收机和中继器
CN1035586C (zh) 1993-10-13 1997-08-06 Ntt移动通信网株式会社 扩频通信接收机
KR950035142A (ko) 1994-03-10 1995-12-30 가나미야지 준 수신장치, 기지국 수신 시스템 및 이동국 수신시스템
EP0716520B1 (de) 1994-06-23 2004-05-12 NTT DoCoMo, Inc. Cdma demodulationsschaltung und -verfahren
US5920555A (en) 1994-07-28 1999-07-06 Roke Manor Research Limited Pilot assisted direct sequence spread spectrum synchronization apparatus
GB2292053B (en) * 1994-07-28 1998-08-26 Roke Manor Research Synchronisation apparatus
US5619524A (en) * 1994-10-04 1997-04-08 Motorola, Inc. Method and apparatus for coherent communication reception in a spread-spectrum communication system
US5724378A (en) 1994-12-13 1998-03-03 Nit Mobile Communications Network, Inc. CDMA multiuser receiver and method
JPH08172464A (ja) * 1994-12-20 1996-07-02 Fujitsu Ltd キャリア位相制御回路
US5692006A (en) 1995-07-31 1997-11-25 Qualcomm Incorporated Adaptive despreader
US6356555B1 (en) * 1995-08-25 2002-03-12 Terayon Communications Systems, Inc. Apparatus and method for digital data transmission using orthogonal codes
US5745837A (en) 1995-08-25 1998-04-28 Terayon Corporation Apparatus and method for digital data transmission over a CATV system using an ATM transport protocol and SCDMA
US5930288A (en) * 1996-05-06 1999-07-27 Motorola, Inc. Time-shared lock indicator circuit and method for power control and traffic channel decoding in a radio receiver
US5768307A (en) 1996-09-13 1998-06-16 Telefonaktiebolaget Lm Ericsson Coherent demodulation with decision-directed channel estimation for digital communication
CA2214163C (en) * 1996-09-27 2001-07-31 Nec Corporation Method and apparatus for preamble-less demodulation
US6192068B1 (en) * 1996-10-03 2001-02-20 Wi-Lan Inc. Multicode spread spectrum communications system
JP3006679B2 (ja) * 1997-01-16 2000-02-07 日本電気株式会社 セルラー移動電話システム
US5943331A (en) * 1997-02-28 1999-08-24 Interdigital Technology Corporation Orthogonal code synchronization system and method for spread spectrum CDMA communications
US6055231A (en) * 1997-03-12 2000-04-25 Interdigital Technology Corporation Continuously adjusted-bandwidth discrete-time phase-locked loop
US6366607B1 (en) * 1998-05-14 2002-04-02 Interdigital Technology Corporation Processing for improved performance and reduced pilot
BR0109904A (pt) * 2000-03-28 2004-03-30 Interdigital Tech Corp Sistema de cdma que utiliza rotação prévia antes da transmissão
US7075973B2 (en) * 2003-03-03 2006-07-11 Interdigital Technology Corporation Multiuser detection of differing data rate signals

Also Published As

Publication number Publication date
US7110443B2 (en) 2006-09-19
US20020097787A1 (en) 2002-07-25
US20040156424A1 (en) 2004-08-12
BR9910412A (pt) 2001-01-09
EP1076938A1 (de) 2001-02-21
US20020067760A1 (en) 2002-06-06
DE69915714D1 (de) 2004-04-22
WO1999059259A1 (en) 1999-11-18
US8254431B2 (en) 2012-08-28
US20020039382A1 (en) 2002-04-04
CN100530995C (zh) 2009-08-19
SG111970A1 (en) 2005-06-29
CN1300476A (zh) 2001-06-20
US20120320952A1 (en) 2012-12-20
US7949037B2 (en) 2011-05-24
US20030156629A1 (en) 2003-08-21
US20050254557A1 (en) 2005-11-17
JP2002515679A (ja) 2002-05-28
KR100629701B1 (ko) 2006-09-29
US20070014338A1 (en) 2007-01-18
US6944209B2 (en) 2005-09-13
AU2477699A (en) 1999-11-29
JP2008011542A (ja) 2008-01-17
EP1429469A2 (de) 2004-06-16
ATE262240T1 (de) 2004-04-15
KR20010043543A (ko) 2001-05-25
EP1283602A3 (de) 2003-02-19
DE69904039T2 (de) 2003-09-11
US6516022B2 (en) 2003-02-04
ATE228278T1 (de) 2002-12-15
EP1076938B1 (de) 2002-11-20
DE69915714T2 (de) 2005-02-10
CN1501614A (zh) 2004-06-02
EP1283602B1 (de) 2004-03-17
ES2189387T3 (es) 2003-07-01
ES2218498T3 (es) 2004-11-16
US20110188546A1 (en) 2011-08-04
CN1917385A (zh) 2007-02-21
IL139057A0 (en) 2001-11-25
HK1035814A1 (en) 2001-12-07
DE69904039D1 (de) 2003-01-02
CA2330703A1 (en) 1999-11-18
US6366607B1 (en) 2002-04-02
EP1283602A2 (de) 2003-02-12
US6707845B2 (en) 2004-03-16
JP4566222B2 (ja) 2010-10-20
JP4004229B2 (ja) 2007-11-07
TR200003340T2 (tr) 2001-02-21
US8582625B2 (en) 2013-11-12
US6483868B2 (en) 2002-11-19
CN1213547C (zh) 2005-08-03
US6480530B2 (en) 2002-11-12
EP1429469A3 (de) 2004-06-30

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