CA2385120A1 - Correlator - Google Patents

Correlator Download PDF

Info

Publication number
CA2385120A1
CA2385120A1 CA002385120A CA2385120A CA2385120A1 CA 2385120 A1 CA2385120 A1 CA 2385120A1 CA 002385120 A CA002385120 A CA 002385120A CA 2385120 A CA2385120 A CA 2385120A CA 2385120 A1 CA2385120 A1 CA 2385120A1
Authority
CA
Canada
Prior art keywords
input
outputs
shift register
code phase
logic branch
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
CA002385120A
Other languages
French (fr)
Other versions
CA2385120C (en
Inventor
Ville Eerola
Tapani Ritoniemi
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.)
Qualcomm 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 CA2385120A1 publication Critical patent/CA2385120A1/en
Application granted granted Critical
Publication of CA2385120C publication Critical patent/CA2385120C/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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked 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
    • H04B1/709—Correlator structure
    • H04B1/7095—Sliding correlator type

Abstract

The present invention relates to a de-vice for generating at least one code phase (C e, C p, C l), the device comprising a shift register (702) comprising N outputs and to which a code sequence (C in) to be phased is applied, and at least one logic branch (722, 723, 724) controlled by at least one combination control signal on the basis of which the logic branch combines the code phase from i outputs of the shift register (702). N is an integer greater than two and i is an integer between 2 and N. Said at least one logic branch preferably comprises i two-input selectors (901 to 909, 911 to 919, 921 to 929), to the first input of each of which is connected one input of the shift register (702) and to the second input is connected one combination control signal (ec0 to ec8, pc0 to pc8, lc0 to lc8), and an i-input combiner (910, 920, 930), to whose outputs are connected the outputs of said i selectors and from whose output said code phase is obtained.
CA002385120A 1999-10-13 2000-10-12 Correlator Expired - Fee Related CA2385120C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FI19992209 1999-10-13
FI992209 1999-10-13
FI20000519A FI111578B (en) 1999-10-13 2000-03-07 correlator
FI20000519 2000-03-07
PCT/FI2000/000882 WO2001028119A1 (en) 1999-10-13 2000-10-12 Correlator

Publications (2)

Publication Number Publication Date
CA2385120A1 true CA2385120A1 (en) 2001-04-19
CA2385120C CA2385120C (en) 2009-09-08

Family

ID=26160789

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002385120A Expired - Fee Related CA2385120C (en) 1999-10-13 2000-10-12 Correlator

Country Status (9)

Country Link
US (2) US7283582B1 (en)
EP (1) EP1222751B1 (en)
JP (1) JP4754750B2 (en)
AT (1) ATE409984T1 (en)
AU (1) AU772255B2 (en)
CA (1) CA2385120C (en)
DE (1) DE60040405D1 (en)
FI (1) FI111578B (en)
WO (1) WO2001028119A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI111578B (en) * 1999-10-13 2003-08-15 U Nav Microelectronics Corp correlator
RU2760730C1 (en) * 2021-05-31 2021-11-29 Акционерное общество "Концерн "Созвездие" Control apparatus for an interference-proof radio engineering system

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365338A (en) * 1980-06-27 1982-12-21 Harris Corporation Technique for high rate digital transmission over a dynamic dispersive channel
US4707839A (en) * 1983-09-26 1987-11-17 Harris Corporation Spread spectrum correlator for recovering CCSK data from a PN spread MSK waveform
US4833479A (en) * 1988-03-21 1989-05-23 Motorola, Inc. Digital poly-phase pulse compressor
JP3544998B2 (en) * 1992-06-22 2004-07-21 ソニー株式会社 Rate converter
US5377225A (en) 1993-10-19 1994-12-27 Hughes Aircraft Company Multiple-access noise rejection filter for a DS-CDMA system
IL111469A0 (en) * 1993-11-01 1994-12-29 Omnipoint Corp Despreading/demodulating direct sequence spread spectrum signals
US5920589A (en) 1995-06-07 1999-07-06 Sanconix Inc. Direct sequence spread spectrum DSP system
US5640416A (en) 1995-06-07 1997-06-17 Comsat Corporation Digital downconverter/despreader for direct sequence spread spectrum communications system
US7123600B2 (en) * 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
JP2926651B2 (en) 1995-11-02 1999-07-28 株式会社鷹山 Matched filter circuit
DE69634974D1 (en) * 1995-12-26 2005-09-01 Sharp Kk Spreizspektrumnachrichtenübertragungssystem
JP3217688B2 (en) * 1996-03-14 2001-10-09 株式会社東芝 Synchronous tracking device for spread spectrum receiver.
JPH1011268A (en) * 1996-06-19 1998-01-16 Oki Electric Ind Co Ltd Pseudo random sequence code generator
GB2354413B (en) * 1996-07-23 2001-05-30 Roke Manor Research Randomised code acquisition
US5715276A (en) 1996-08-22 1998-02-03 Golden Bridge Technology, Inc. Symbol-matched filter having a low silicon and power requirement
JPH10117128A (en) * 1996-10-08 1998-05-06 Kokusai Electric Co Ltd Controller for phase of pseudo noise series code
JP3884115B2 (en) 1996-12-10 2007-02-21 三菱電機株式会社 Digital matched filter
EP0855796A3 (en) 1997-01-27 2002-07-31 Yozan Inc. Matched filter and filter circuit
US6289041B1 (en) * 1997-02-11 2001-09-11 Snaptrack, Inc. Fast Acquisition, high sensitivity GPS receiver
JP3408944B2 (en) 1997-04-24 2003-05-19 シャープ株式会社 Demodulator in direct spread spectrum communication system and correlator in the same
JP3818733B2 (en) * 1997-04-30 2006-09-06 富士通株式会社 Average value calculation circuit, correlation value calculation circuit using the same, matched filter, and communication device
US5999561A (en) 1997-05-20 1999-12-07 Sanconix, Inc. Direct sequence spread spectrum method, computer-based product, apparatus and system tolerant to frequency reference offset
JP3751419B2 (en) 1997-06-16 2006-03-01 松下電器産業株式会社 Matched filter and synchronization method
US6094450A (en) * 1997-06-20 2000-07-25 Cincinnati Electronics Corporation Spread spectrum chip shift keying modulation/demodulation system and method
EP1674881A3 (en) * 1997-11-19 2008-04-16 IMEC vzw Method and apparatus for receiving GPS/GLONASS signals
JPH11186984A (en) 1997-12-18 1999-07-09 Sony Corp Correlation detector and correlation detection method
JP3587675B2 (en) * 1998-02-18 2004-11-10 富士通株式会社 Pseudo noise generator
JP3856261B2 (en) 1998-03-18 2006-12-13 ソニー株式会社 Synchronous detection device
JPH11275052A (en) * 1998-03-19 1999-10-08 Fujitsu Ltd Spread coder and its method
JP3825179B2 (en) * 1998-07-17 2006-09-20 富士通株式会社 Correlator
US6445714B1 (en) * 1998-08-19 2002-09-03 Nortel Networks Limited Code generator for multiple correlators
US6463561B1 (en) * 1999-09-29 2002-10-08 Agere Systems Guardian Corp. Almost full-scan BIST method and system having higher fault coverage and shorter test application time
FI111578B (en) * 1999-10-13 2003-08-15 U Nav Microelectronics Corp correlator
US6526322B1 (en) 1999-12-16 2003-02-25 Sirf Technology, Inc. Shared memory architecture in GPS signal processing

Also Published As

Publication number Publication date
WO2001028119A1 (en) 2001-04-19
JP4754750B2 (en) 2011-08-24
DE60040405D1 (en) 2008-11-13
EP1222751B1 (en) 2008-10-01
FI20000519A (en) 2001-04-13
EP1222751A1 (en) 2002-07-17
CA2385120C (en) 2009-09-08
US7283582B1 (en) 2007-10-16
FI20000519A0 (en) 2000-03-07
ATE409984T1 (en) 2008-10-15
US20080043822A1 (en) 2008-02-21
AU7925500A (en) 2001-04-23
JP2003511958A (en) 2003-03-25
US7471719B2 (en) 2008-12-30
AU772255B2 (en) 2004-04-22
FI111578B (en) 2003-08-15

Similar Documents

Publication Publication Date Title
ES2144383T1 (en) PHASE MATRIX SPECTRUM SPECTRUM SYSTEM AND METHOD.
WO2001031373A3 (en) Mechanically actuated optical switch
ATE392050T1 (en) SIGNAL MATCHED FILTER AND SPREAD SPECTRUM RECEIVER
CA2385120A1 (en) Correlator
WO1999038337A3 (en) Method and system for generating a complex pseudonoise sequence for processing a code division multiple access signal
IL119860A (en) Digital phase shifter for phase shifting an input signal by given increments
BG103101A (en) Phase control device
MY128641A (en) Bi-directional vector rotator
DE29502573U1 (en) Switchgear, especially circuit breakers
KR970072735A (en) Correlator of spread spectrum communication system
KR960036046A (en) Temperature correction circuit for IC device and its correction method
KR960027859A (en) Numerically Controlled Phase Shift Clock Generator
CA2308085A1 (en) Phase angle data-trigonometric function value converter circuit and composite diversity receiver
EP0653800A3 (en) Wide-band power branch/combiner.
RU97121849A (en) POWER RECOVERY DEVICE
TW253082B (en) Cascadable multi-pulse generator
BR9612683A (en) Phase control device.

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20191015

MKLA Lapsed

Effective date: 20191015