DE19983814T1 - Channel estimation for a CDMA system and use of predefined symbols in addition to pilot symbols - Google Patents

Channel estimation for a CDMA system and use of predefined symbols in addition to pilot symbols

Info

Publication number
DE19983814T1
DE19983814T1 DE19983814T DE19983814T DE19983814T1 DE 19983814 T1 DE19983814 T1 DE 19983814T1 DE 19983814 T DE19983814 T DE 19983814T DE 19983814 T DE19983814 T DE 19983814T DE 19983814 T1 DE19983814 T1 DE 19983814T1
Authority
DE
Germany
Prior art keywords
symbols
addition
channel estimation
cdma system
predefined
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.)
Withdrawn
Application number
DE19983814T
Other languages
German (de)
Inventor
Hans Cavander
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of DE19983814T1 publication Critical patent/DE19983814T1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • 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
    • 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
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04L25/0214—Channel estimation of impulse response of a single coefficient
    • 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
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • 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
DE19983814T 1998-12-16 1999-12-16 Channel estimation for a CDMA system and use of predefined symbols in addition to pilot symbols Withdrawn DE19983814T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21225898A 1998-12-16 1998-12-16
PCT/SE1999/002398 WO2000036760A1 (en) 1998-12-16 1999-12-16 Channel estimation for a cdma system using pre-defined symbols in addition to pilot symbols

Publications (1)

Publication Number Publication Date
DE19983814T1 true DE19983814T1 (en) 2001-12-13

Family

ID=22790260

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19983814T Withdrawn DE19983814T1 (en) 1998-12-16 1999-12-16 Channel estimation for a CDMA system and use of predefined symbols in addition to pilot symbols

Country Status (7)

Country Link
JP (1) JP2002533007A (en)
CN (1) CN1192506C (en)
AU (1) AU3092600A (en)
DE (1) DE19983814T1 (en)
GB (1) GB2363553B (en)
MY (1) MY130820A (en)
WO (1) WO2000036760A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001186082A (en) * 1999-12-24 2001-07-06 Matsushita Electric Ind Co Ltd Cdma mobile communication system and method
FR2814011B1 (en) * 2000-09-14 2003-10-24 France Telecom OPTIMAL ESTIMATION METHOD OF A PROPAGATION CHANNEL BASED ONLY ON PILOT SYMBOLS AND CORRESPONDING ESTIMATOR
CN1157880C (en) * 2000-09-25 2004-07-14 华为技术有限公司 Multiple time interval power control method
WO2002039686A1 (en) * 2000-11-09 2002-05-16 Linkair Communications, Inc. A channel estimating method and apparatus thereof
EP1263179B1 (en) * 2001-05-29 2007-06-27 Lucent Technologies Inc. Channel estimation for a CDMA system using coded control symbols as additional pilot symbols
JP3562502B2 (en) * 2001-09-27 2004-09-08 日本電気株式会社 CDMA receiver and channel estimation method for the same
WO2004014029A1 (en) * 2002-08-06 2004-02-12 Zte Corporation A method of channel estimation in wideband cdma communication
FR2851383A1 (en) * 2003-02-17 2004-08-20 Wavecom Wireless data transmitting process for universal mobile telecommunication system, involves estimating response of transmission channel of data transmission signal by taking into account simple carrier pilot signal
US7366137B2 (en) 2003-05-31 2008-04-29 Qualcomm Incorporated Signal-to-noise estimation in wireless communication devices with receive diversity
CN100362762C (en) * 2003-12-29 2008-01-16 华为技术有限公司 An apparatus and method for implementing data signal mode decision
EP2753036B1 (en) 2013-01-08 2016-09-07 Freescale Semiconductor, Inc. Channel estimation in wireless communication
US9118515B2 (en) 2014-01-08 2015-08-25 Freescale Semiconductor, Inc. Channel estimation in wireless communication
CN105282059A (en) 2014-06-30 2016-01-27 深圳市中兴微电子技术有限公司 Multi-path selection method and equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5263026A (en) * 1991-06-27 1993-11-16 Hughes Aircraft Company Maximum likelihood sequence estimation based equalization within a mobile digital cellular receiver
EP0715440B1 (en) * 1994-06-22 2004-06-16 NTT DoCoMo, Inc. Synchronous detector and synchronizing method for digital communication receiver
US5619524A (en) * 1994-10-04 1997-04-08 Motorola, Inc. Method and apparatus for coherent communication reception in a spread-spectrum communication system
FR2747870B1 (en) * 1996-04-19 1998-11-06 Wavecom Sa DIGITAL SIGNAL WITH MULTIPLE REFERENCE BLOCKS FOR CHANNEL ESTIMATION, CHANNEL ESTIMATION METHODS AND CORRESPONDING RECEIVERS

Also Published As

Publication number Publication date
AU3092600A (en) 2000-07-03
CN1192506C (en) 2005-03-09
JP2002533007A (en) 2002-10-02
CN1334997A (en) 2002-02-06
MY130820A (en) 2007-07-31
GB2363553B (en) 2003-12-03
WO2000036760A1 (en) 2000-06-22
GB0116741D0 (en) 2001-08-29
GB2363553A (en) 2001-12-19

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Legal Events

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8139 Disposal/non-payment of the annual fee