DE602005010588D1 - Verwendung von adaptiven filtern in drahtlosen, pilotsignalverwendenden cdma-systemen - Google Patents

Verwendung von adaptiven filtern in drahtlosen, pilotsignalverwendenden cdma-systemen

Info

Publication number
DE602005010588D1
DE602005010588D1 DE602005010588T DE602005010588T DE602005010588D1 DE 602005010588 D1 DE602005010588 D1 DE 602005010588D1 DE 602005010588 T DE602005010588 T DE 602005010588T DE 602005010588 T DE602005010588 T DE 602005010588T DE 602005010588 D1 DE602005010588 D1 DE 602005010588D1
Authority
DE
Germany
Prior art keywords
adaptive
signal
correlation
pilot signal
films
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.)
Expired - Fee Related
Application number
DE602005010588T
Other languages
English (en)
Inventor
Alvin M Despain
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.)
Acorn Technologies Inc
Original Assignee
Acorn Technologies 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 Acorn Technologies Inc filed Critical Acorn Technologies Inc
Publication of DE602005010588D1 publication Critical patent/DE602005010588D1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type
    • 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
    • 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
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
DE602005010588T 2004-07-19 2005-07-15 Verwendung von adaptiven filtern in drahtlosen, pilotsignalverwendenden cdma-systemen Expired - Fee Related DE602005010588D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/894,913 US7599426B2 (en) 2004-07-19 2004-07-19 Use of adaptive filters in multiple access wireless systems employing predictable signals
PCT/US2005/025335 WO2006020157A2 (en) 2004-07-19 2005-07-15 Use of adaptive filters in cdma wireless systems employing pilot signals

Publications (1)

Publication Number Publication Date
DE602005010588D1 true DE602005010588D1 (de) 2008-12-04

Family

ID=35521012

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602005010588T Expired - Fee Related DE602005010588D1 (de) 2004-07-19 2005-07-15 Verwendung von adaptiven filtern in drahtlosen, pilotsignalverwendenden cdma-systemen

Country Status (7)

Country Link
US (1) US7599426B2 (de)
EP (1) EP1774670B1 (de)
KR (1) KR100867029B1 (de)
CN (1) CN101036311B (de)
AT (1) ATE412277T1 (de)
DE (1) DE602005010588D1 (de)
WO (1) WO2006020157A2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1447950A1 (de) * 2003-02-14 2004-08-18 Vrije Universiteit Brussel Adaptativer niederspannungsentzerrer
US7756196B1 (en) * 2005-04-04 2010-07-13 Acorn Technologies, Inc. Efficient adaptive filters for CDMA wireless systems
US7893873B2 (en) 2005-12-20 2011-02-22 Qualcomm Incorporated Methods and systems for providing enhanced position location in wireless communications
US7801210B2 (en) * 2006-01-24 2010-09-21 Nokia Corporation Apparatus and methods for implementing a split equalizer filter for sparse channels
US20080037689A1 (en) * 2006-08-09 2008-02-14 Tolga Kurt Adaptive Kalman filtering for fast fading removal
KR100773294B1 (ko) * 2006-08-28 2007-11-05 삼성전자주식회사 광대역 무선접속 시스템에서 채널 추정 장치 및 방법
IL203785A (en) 2007-09-12 2014-07-31 Qualcomm Inc Devices to increase capacitance and methods for wireless communication
BRPI0816696B1 (pt) * 2007-09-12 2020-08-04 Qualcomm Incorporated Dispositivos e métodos para comunicação sem fio com capacidade aumentada
US8386549B1 (en) 2008-03-04 2013-02-26 Acorn Technologies, Inc. Reduced complexity adaptive multistage wiener filter
US8195001B2 (en) * 2008-04-09 2012-06-05 Intel Corporation In-loop adaptive wiener filter for video coding and decoding
US7700416B1 (en) 2008-04-25 2010-04-20 Acorn Technologies, Inc. Tensile strained semiconductor on insulator using elastic edge relaxation and a sacrificial stressor layer
US20100098042A1 (en) * 2008-10-21 2010-04-22 Paul Wilkinson Dent Using the same multiplexed radio resource for pilot and information signals
KR101643952B1 (ko) * 2009-12-23 2016-08-01 삼성전자주식회사 이동 통신 시스템에서 채널 추정 장치 및 방법
US9059201B2 (en) 2010-04-28 2015-06-16 Acorn Technologies, Inc. Transistor with longitudinal strain in channel induced by buried stressor relaxed by implantation
US9401541B2 (en) 2012-04-06 2016-07-26 Digimarc Corporation Methods and systems useful in connection with multipath
US8688062B2 (en) * 2012-04-09 2014-04-01 Harris Corporation Wireless communications system with interference mitigation and associated methods
US9294949B2 (en) * 2012-08-28 2016-03-22 Intel Deutschland Gmbh Interference and noise estimation of a communications channel
KR102206829B1 (ko) * 2014-02-12 2021-01-25 한국전자통신연구원 동기 획득을 위한 무선 통신 시스템 및 그의 제어 방법
CN114389920B (zh) * 2022-01-21 2023-09-26 哲库科技(北京)有限公司 信道估计结果处理方法、装置、终端及存储介质

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5734598A (en) 1994-12-28 1998-03-31 Quantum Corporation Low power filter coefficient adaptation circuit for digital adaptive filter
US5953327A (en) * 1996-10-29 1999-09-14 Stanford Telecommunications, Inc. Class of low cross correlation non-palindromic synchronization sequences for code tracking in synchronous multiple access communication systems
US6175588B1 (en) 1997-12-30 2001-01-16 Motorola, Inc. Communication device and method for interference suppression using adaptive equalization in a spread spectrum communication system
FI112831B (fi) * 1999-04-28 2004-01-15 Nokia Corp Menetelmä kanavaestimaatin muodostamiseksi ja vastaanotin
US7120657B2 (en) 2000-08-29 2006-10-10 Science Applications International Corporation System and method for adaptive filtering
AU2002211881A1 (en) 2000-10-13 2002-04-22 Science Applications International Corporation System and method for linear prediction
US7061970B2 (en) 2000-11-14 2006-06-13 Irving Reed Self-synchronizing adaptive multistage receiver for wireless communication systems
US20020191568A1 (en) 2001-03-29 2002-12-19 Koninklijke Philips Electronics N.V. Adaptive chip equalizers for synchronous DS-CDMA systems with pilot sequences
US7158558B2 (en) * 2001-04-26 2007-01-02 Interuniversitair Microelektronica Centrum (Imec) Wideband multiple access telecommunication method and apparatus
US7181085B1 (en) 2002-04-04 2007-02-20 Acorn Technologies, Inc. Adaptive multistage wiener filter
FI20020953A0 (fi) * 2002-05-21 2002-05-21 Nokia Corp Kanavaestimointi hajaspektrijärjestelmässä
US6744749B2 (en) 2002-06-05 2004-06-01 Qualcomm, Incorporated Method and apparatus for pilot estimation using a wiener filter

Also Published As

Publication number Publication date
EP1774670A2 (de) 2007-04-18
CN101036311A (zh) 2007-09-12
US7599426B2 (en) 2009-10-06
KR100867029B1 (ko) 2008-11-04
CN101036311B (zh) 2010-09-29
WO2006020157A2 (en) 2006-02-23
EP1774670B1 (de) 2008-10-22
WO2006020157A3 (en) 2006-04-06
ATE412277T1 (de) 2008-11-15
KR20070042968A (ko) 2007-04-24
US20060013292A1 (en) 2006-01-19

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee