CA2263676A1 - Symbol-matched filter having a low silicon and power requirement - Google Patents

Symbol-matched filter having a low silicon and power requirement

Info

Publication number
CA2263676A1
CA2263676A1 CA002263676A CA2263676A CA2263676A1 CA 2263676 A1 CA2263676 A1 CA 2263676A1 CA 002263676 A CA002263676 A CA 002263676A CA 2263676 A CA2263676 A CA 2263676A CA 2263676 A1 CA2263676 A1 CA 2263676A1
Authority
CA
Canada
Prior art keywords
shift registers
data
adder
matched filter
adds
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.)
Granted
Application number
CA002263676A
Other languages
French (fr)
Other versions
CA2263676C (en
Inventor
Jimmy Cuong Tran
Sorin Davidovici
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.)
Golden Bridge Technology Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2263676A1 publication Critical patent/CA2263676A1/en
Application granted granted Critical
Publication of CA2263676C publication Critical patent/CA2263676C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0254—Matched filters

Abstract

A spread spectrum matched filter for use with a spread spectrum receiver comprising a first plurality of shift registers (131), a second plurality of shift registers (132), a control processor (138), a multiplexer (133), a plurality of data shift registers (134), a plurality of exclusive-OR (XOR) gates (135), an adder tree (136), a memory (137), and an adder (139). The first plurality of shift registers (131) stores a first portion of a referencechip-sequence signal and the second plurality of shift registers (132) stores a second portion of the reference-chip-sequence signal. The multiplexer (133), responsive to the control processor (138), outputs the first portion during a first clock cycle and the second portion during a second clock cycle. The plurality of XOR gates (135) multiply the first portion, during a first clock cycle, by a plurality of input-data-samples shifted through the data shift registers (134) to generate a first plurality of product-output signals. The plurality of XOR gates (135) multiply the second portion by a plurality of input-data-samples shifted through the data shift registers (134) to generate a second plurality of product-output-signals. The adder tree (136) adds the first plurality of product-output signals as a first sum which is stored in the memory (137). The adder tree (136) adds the second plurality of productoutput signals as a second sum. The adder (139) adds the first and second sums.
CA002263676A 1996-08-22 1997-08-20 Symbol-matched filter having a low silicon and power requirement Expired - Fee Related CA2263676C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/701,440 1996-08-22
US08/701,440 US5715276A (en) 1996-08-22 1996-08-22 Symbol-matched filter having a low silicon and power requirement
PCT/US1997/014675 WO1998008313A1 (en) 1996-08-22 1997-08-20 Symbol-matched filter having a low silicon and power requirement

Publications (2)

Publication Number Publication Date
CA2263676A1 true CA2263676A1 (en) 1998-02-26
CA2263676C CA2263676C (en) 2007-10-23

Family

ID=24817388

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002263676A Expired - Fee Related CA2263676C (en) 1996-08-22 1997-08-20 Symbol-matched filter having a low silicon and power requirement

Country Status (10)

Country Link
US (2) US5715276A (en)
EP (1) EP0920743B1 (en)
JP (1) JP2000516421A (en)
KR (1) KR100450838B1 (en)
CN (1) CN1107388C (en)
AU (1) AU4078697A (en)
CA (1) CA2263676C (en)
DE (1) DE69732908D1 (en)
TW (1) TW367665B (en)
WO (1) WO1998008313A1 (en)

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US6363108B1 (en) * 1999-03-31 2002-03-26 Qualcomm Inc. Programmable matched filter searcher
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US6760366B1 (en) * 1999-11-29 2004-07-06 Qualcomm Incorporated Method and apparatus for pilot search using a matched filter
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US6480529B1 (en) * 1999-12-21 2002-11-12 Qualcomm, Incorporated Programmable matched filter searcher for multiple pilot searching
JP2001251220A (en) * 1999-12-27 2001-09-14 Sanyo Electric Co Ltd Digital matched filter and mobile wireless terminal using the digital matched filter
US6842480B1 (en) 2000-02-28 2005-01-11 Golden Bridge Technology Incorporated Programmable matched filter bank
US6839889B2 (en) * 2000-03-01 2005-01-04 Realtek Semiconductor Corp. Mixed hardware/software architecture and method for processing xDSL communications
US7103095B2 (en) * 2000-03-06 2006-09-05 Texas Instruments Incorporated Spread spectrum code correlator
US6981180B1 (en) * 2000-03-16 2005-12-27 Akamai Technologies, Inc. Method and apparatus for testing request-response service using live connection traffic
RU2158319C1 (en) * 2000-04-25 2000-10-27 Институт металлургии и материаловедения им. А.А. Байкова РАН High-strength corrosion- and wear-resistant austenitic steel
US6801569B1 (en) 2000-06-22 2004-10-05 Golden Bridge Technology Inc. Digital matched filter bank for othogonal signal set
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US7035315B2 (en) * 2001-04-24 2006-04-25 Lucent Technologies Inc. Doppler corrected communications receiver and method of removing doppler frequency shift
US7209461B2 (en) * 2001-05-09 2007-04-24 Qualcomm Incorporated Method and apparatus for chip-rate processing in a CDMA system
US7688919B1 (en) * 2001-06-26 2010-03-30 Altera Corporation Parallel samples, parallel coefficients, time division multiplexing correlator architecture
GB2397985B (en) * 2001-11-02 2004-12-15 Toshiba Res Europ Ltd Receiver processing system
US7194021B2 (en) * 2002-04-15 2007-03-20 Stmicroelectronics, Inc. Digital matched filter
WO2004047328A1 (en) * 2002-11-15 2004-06-03 Telecom Italia S.P.A. Memory based device and method for channel estimation in a digital communication receiver
US20050069052A1 (en) * 2003-09-30 2005-03-31 David Carbonari Ultra-wideband receiver
GB0714927D0 (en) * 2007-08-01 2007-09-12 Nokia Siemens Networks Oy Resource allocation
CN101562592B (en) * 2009-05-22 2013-03-20 哈尔滨工业大学 Method for integrating phase factor based on memory unit
US20160291129A1 (en) * 2015-02-09 2016-10-06 The Regents Of The University Of Michigan Current-Mode Matched Filter Architecture For Signal Acquisition
CN108344987B (en) * 2018-01-04 2022-06-14 中国人民解放军91388部队 Numerical value calculation-based method for multi-subarray synthetic aperture sonar frequency domain function

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Also Published As

Publication number Publication date
EP0920743B1 (en) 2005-03-30
US5715276A (en) 1998-02-03
EP0920743A1 (en) 1999-06-09
CA2263676C (en) 2007-10-23
KR20000068247A (en) 2000-11-25
TW367665B (en) 1999-08-21
CN1107388C (en) 2003-04-30
KR100450838B1 (en) 2004-10-02
DE69732908D1 (en) 2005-05-04
EP0920743A4 (en) 2000-01-26
JP2000516421A (en) 2000-12-05
AU4078697A (en) 1998-03-06
US5933447A (en) 1999-08-03
WO1998008313A1 (en) 1998-02-26
CN1227681A (en) 1999-09-01

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Effective date: 20110822