TW200729759A - Method of and apparatus for multi-path signal-component combining - Google Patents

Method of and apparatus for multi-path signal-component combining

Info

Publication number
TW200729759A
TW200729759A TW095136264A TW95136264A TW200729759A TW 200729759 A TW200729759 A TW 200729759A TW 095136264 A TW095136264 A TW 095136264A TW 95136264 A TW95136264 A TW 95136264A TW 200729759 A TW200729759 A TW 200729759A
Authority
TW
Taiwan
Prior art keywords
multipath components
combining
despreading
combining weights
path signal
Prior art date
Application number
TW095136264A
Other languages
English (en)
Inventor
Andres Reial
Peter Malm
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of TW200729759A publication Critical patent/TW200729759A/zh

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
    • H04B1/7097—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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner 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
    • H04B1/69—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
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • 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
    • 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
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709727—GRAKE type RAKE receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
TW095136264A 2005-09-30 2006-09-29 Method of and apparatus for multi-path signal-component combining TW200729759A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/241,680 US7852902B2 (en) 2005-09-30 2005-09-30 Method of and apparatus for multi-path signal component combining

Publications (1)

Publication Number Publication Date
TW200729759A true TW200729759A (en) 2007-08-01

Family

ID=37496562

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095136264A TW200729759A (en) 2005-09-30 2006-09-29 Method of and apparatus for multi-path signal-component combining

Country Status (6)

Country Link
US (1) US7852902B2 (zh)
EP (1) EP1929648B1 (zh)
KR (1) KR20080063292A (zh)
CN (1) CN101278490B (zh)
TW (1) TW200729759A (zh)
WO (1) WO2007039446A1 (zh)

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US8295328B2 (en) * 2006-10-11 2012-10-23 Telefonaktiebolaget Lm Ericsson (Publ) Doppler frequency control of G-rake receiver
US8437315B2 (en) * 2007-08-01 2013-05-07 Broadcom Corporation Firmware processing for downlink F-DPCH
CN102098694B (zh) * 2009-12-09 2013-11-27 上海摩波彼克半导体有限公司 移动通信系统中移动终端侧实现多径能量合并的方法
WO2011145986A1 (en) * 2010-05-18 2011-11-24 Telefonaktiebolaget L M Ericsson (Publ) Load estimation in softer handover
CN101951288A (zh) * 2010-09-16 2011-01-19 华亚微电子（上海）有限公司 多径信号的同步误差处理方法以及处理装置
DE112016007003B4 (de) * 2016-06-24 2019-09-12 Mitsubishi Electric Corporation Funkempfangsvorrichtung
US10880678B1 (en) * 2018-08-07 2020-12-29 Nestwave Sas Indoor and outdoor geolocation and time of arrival estimation
EP3644518B1 (en) 2018-10-23 2021-06-23 Nxp B.V. Optimizing mrc coefficients for rake receiver for increasing snr

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US6714585B1 (en) * 1999-06-25 2004-03-30 Ericsson Inc. Rake combining methods and apparatus using weighting factors derived from knowledge of spreading spectrum signal characteristics
US7415061B2 (en) * 1999-08-31 2008-08-19 Broadcom Corporation Cancellation of burst noise in a communication system with application to S-CDMA
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US7457381B1 (en) * 1999-09-09 2008-11-25 Texas Instruments Incorporated Spread spectrum multipath combination
US6922434B2 (en) 1999-10-19 2005-07-26 Ericsson Inc. Apparatus and methods for finger delay selection in RAKE receivers
US6683924B1 (en) 1999-10-19 2004-01-27 Ericsson Inc. Apparatus and methods for selective correlation timing in rake receivers
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Also Published As

Publication number Publication date
US7852902B2 (en) 2010-12-14
EP1929648A1 (en) 2008-06-11
CN101278490A (zh) 2008-10-01
KR20080063292A (ko) 2008-07-03
US20070076785A1 (en) 2007-04-05
WO2007039446A1 (en) 2007-04-12
EP1929648B1 (en) 2015-11-11
CN101278490B (zh) 2012-06-27

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