CA2044166A1 - Digital Receiver for Spread-Spectrum Signals - Google Patents

Digital Receiver for Spread-Spectrum Signals

Info

Publication number
CA2044166A1
CA2044166A1 CA2044166A CA2044166A CA2044166A1 CA 2044166 A1 CA2044166 A1 CA 2044166A1 CA 2044166 A CA2044166 A CA 2044166A CA 2044166 A CA2044166 A CA 2044166A CA 2044166 A1 CA2044166 A1 CA 2044166A1
Authority
CA
Canada
Prior art keywords
digital
correlator
spread
digital receiver
spectrum signals
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
CA2044166A
Other languages
French (fr)
Other versions
CA2044166C (en
Inventor
Hans Kaufmann
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.)
Ascom Zelcom AG
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 CA2044166A1 publication Critical patent/CA2044166A1/en
Application granted granted Critical
Publication of CA2044166C publication Critical patent/CA2044166C/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
    • 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

Abstract

The receiver contains a correlator (TIC) for the correlation of the received signal with a reference code (R(k)) and a digital signal processor for evaluating the results of the correlation. The correlator is constructed as digital, time-integrating, multistage correlator (TIC), the individual stages (K1 to KN) of which are connected on the one hand to a digital delay line (17) fed with the reference code (R(k)) and to which on the other hand a digital signal (S(k)) recovered from the received signal is applied, the length (D) of the delay line (17) being adapted to the maximum expected impulse response of the transmission channel.
CA002044166A 1989-10-19 1990-10-05 Digital receiver for spread-spectrum signals Expired - Fee Related CA2044166C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3811/89-0 1989-10-19
CH3811/89A CH679718A5 (en) 1989-10-19 1989-10-19

Publications (2)

Publication Number Publication Date
CA2044166A1 true CA2044166A1 (en) 1991-04-20
CA2044166C CA2044166C (en) 1998-02-03

Family

ID=4263968

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002044166A Expired - Fee Related CA2044166C (en) 1989-10-19 1990-10-05 Digital receiver for spread-spectrum signals

Country Status (9)

Country Link
US (1) US5216691A (en)
EP (1) EP0448665B1 (en)
AT (1) ATE122189T1 (en)
CA (1) CA2044166C (en)
CH (1) CH679718A5 (en)
DE (1) DE59009021D1 (en)
DK (1) DK0448665T3 (en)
ES (1) ES2074170T3 (en)
WO (1) WO1991006164A1 (en)

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US5627856A (en) 1994-09-09 1997-05-06 Omnipoint Corporation Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators
US5610940A (en) 1994-09-09 1997-03-11 Omnipoint Corporation Method and apparatus for noncoherent reception and correlation of a continous phase modulated signal
US5856998A (en) 1994-09-09 1999-01-05 Omnipoint Corporation Method and apparatus for correlating a continuous phase modulated spread spectrum signal
US5629956A (en) 1994-09-09 1997-05-13 Omnipoint Corporation Method and apparatus for reception and noncoherent serial correlation of a continuous phase modulated signal
US5754585A (en) 1994-09-09 1998-05-19 Omnipoint Corporation Method and apparatus for serial noncoherent correlation of a spread spectrum signal
US5680414A (en) 1994-09-09 1997-10-21 Omnipoint Corporation Synchronization apparatus and method for spread spectrum receiver
US5659574A (en) 1994-09-09 1997-08-19 Omnipoint Corporation Multi-bit correlation of continuous phase modulated signals
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US5881100A (en) 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
US5832028A (en) 1994-09-09 1998-11-03 Omnipoint Corporation Method and apparatus for coherent serial correlation of a spread spectrum signal
US5953370A (en) 1994-09-09 1999-09-14 Omnipoint Corporation Apparatus for receiving and correlating a spread spectrum signal
US5963586A (en) 1994-09-09 1999-10-05 Omnipoint Corporation Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
US5784403A (en) * 1995-02-03 1998-07-21 Omnipoint Corporation Spread spectrum correlation using saw device
JP3307217B2 (en) * 1996-03-01 2002-07-24 株式会社豊田自動織機 Receiver for spread spectrum communication system
JP3671992B2 (en) * 1996-10-28 2005-07-13 ソニー株式会社 Video signal receiving apparatus and video signal receiving method
US6282228B1 (en) * 1997-03-20 2001-08-28 Xircom, Inc. Spread spectrum codes for use in communication
US6075807A (en) * 1997-03-25 2000-06-13 Intermec Ip Corp. Windowed digital matched filter circuit for power reduction in battery-powered CDMA radios
US6628699B2 (en) * 1997-06-23 2003-09-30 Schlumberger Resource Management Systems, Inc. Receiving a spread spectrum signal
US6363105B1 (en) * 1998-02-17 2002-03-26 Ericsson Inc. Flexible sliding correlator for direct sequence spread spectrum systems
AU6384799A (en) 1998-09-08 2000-03-27 University Of Hawaii Spread-spectrum continuous-time analog correlator and method therefor
WO2000054142A2 (en) * 1999-03-09 2000-09-14 Siemens Aktiengesellschaft Device for comparing data sequences
US6744808B1 (en) * 1999-06-03 2004-06-01 Skyworks Solutions, Inc. Techniques to increase data transmission rate of spread spectrum communications systems
DE19929727C2 (en) * 1999-06-29 2003-01-30 Siemens Ag Receiving part for operating a receiving part
US6795491B2 (en) * 1999-07-22 2004-09-21 Aether Wire & Location Spread spectrum localizers
US6873664B1 (en) * 1999-11-12 2005-03-29 Itt Manufacturing Enterprises, Inc. Method and apparatus for detecting an interleaved code
US6324209B1 (en) 2000-02-28 2001-11-27 Golden Bridge Technology Inc. Multi-channel spread spectrum system
US6744806B1 (en) 2000-09-13 2004-06-01 Ut-Battelle, L.L.C. Fast-synchronizing high-fidelity spread-spectrum receiver
CN1140075C (en) * 2000-12-18 2004-02-25 信息产业部电信传输研究所 Initial sync and small area search device of CDMA system based on multipath energy window
US7995682B2 (en) 2001-05-18 2011-08-09 Broadcom Corporation Method and apparatus for performing signal processing using historical correlation data
US7769076B2 (en) 2001-05-18 2010-08-03 Broadcom Corporation Method and apparatus for performing frequency synchronization
US7006556B2 (en) 2001-05-18 2006-02-28 Global Locate, Inc. Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference
US7190712B2 (en) 2001-05-18 2007-03-13 Global Locate, Inc Method and apparatus for performing signal correlation
US6891880B2 (en) * 2001-05-18 2005-05-10 Global Locate, Inc. Method and apparatus for performing signal correlation
US7567636B2 (en) 2001-05-18 2009-07-28 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
JP2003188767A (en) * 2001-12-13 2003-07-04 Oki Electric Ind Co Ltd Synchronism capture circuit
US7227886B2 (en) * 2002-07-29 2007-06-05 Thomson Licensing Synchronization strategy and architecture for spread-spectrum receivers
US6795486B2 (en) 2002-09-23 2004-09-21 Thomson Licensing S.A. Variable-length correlator for spread-spectrum communications
US7545845B2 (en) * 2003-02-05 2009-06-09 Nippon Telegraph And Telephone Corporation Wireless communication system, wireless transmitter, wireless receiver, wireless communication method, wireless transmission method and wireless reception method
FR2854995B1 (en) * 2003-05-14 2005-07-29 Nortel Networks Ltd SPECTRUM DISPLAY MODULATOR AND DEMODULATOR
GB0426915D0 (en) * 2004-12-08 2005-01-12 Melexis Nv Method and apparatus for determining the resonant frequency of surface acoustic wave resonators
US20080043782A1 (en) * 2006-08-15 2008-02-21 Maurizio Skerlj Method and apparatus for checking the position of a receive window
US10656244B2 (en) * 2016-04-08 2020-05-19 General Radar Corp. Reconfigurable correlator (pulse compression receiver) and beam former based on multi-gigabit serial transceivers (SERDES)
US10957445B2 (en) 2017-10-05 2021-03-23 Hill-Rom Services, Inc. Caregiver and staff information system

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US4164628A (en) * 1977-06-06 1979-08-14 International Telephone And Telegraph Corporation Processor for multiple, continuous, spread spectrum signals
US4361891A (en) * 1980-12-22 1982-11-30 General Electric Company Spread spectrum signal estimator
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Also Published As

Publication number Publication date
EP0448665A1 (en) 1991-10-02
ES2074170T3 (en) 1995-09-01
CH679718A5 (en) 1992-03-31
CA2044166C (en) 1998-02-03
DK0448665T3 (en) 1995-09-25
WO1991006164A1 (en) 1991-05-02
ATE122189T1 (en) 1995-05-15
EP0448665B1 (en) 1995-05-03
US5216691A (en) 1993-06-01
DE59009021D1 (en) 1995-06-08

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Legal Events

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EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20031006