CA2139269A1 - Ds/cdma receiver using moving-averaged pilot signals for weighting and phase rotation of orthogonal data symbol vectors - Google Patents

Ds/cdma receiver using moving-averaged pilot signals for weighting and phase rotation of orthogonal data symbol vectors

Info

Publication number
CA2139269A1
CA2139269A1 CA002139269A CA2139269A CA2139269A1 CA 2139269 A1 CA2139269 A1 CA 2139269A1 CA 002139269 A CA002139269 A CA 002139269A CA 2139269 A CA2139269 A CA 2139269A CA 2139269 A1 CA2139269 A1 CA 2139269A1
Authority
CA
Canada
Prior art keywords
orthogonal
moving
orthogonal data
weighting
pilot 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
CA002139269A
Other languages
French (fr)
Other versions
CA2139269C (en
Inventor
Tomoya Kaku
Sean O'regan
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.)
NEC Corp
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 CA2139269A1 publication Critical patent/CA2139269A1/en
Application granted granted Critical
Publication of CA2139269C publication Critical patent/CA2139269C/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
    • H04B1/7097—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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Complex Calculations (AREA)

Abstract

In a direct-sequence spread-spectrum receiver, spread orthogonal data signals and spread orthogonal pilot signals are correlated with orthogonal despreading sequences at a chip rate.
These despread signals are integrated at a symbol rate to produce orthogonal data symbols and orthogonal pilot symbols.
A predetermined number of pilot symbols of each phase component is moving-averaged. Each phase component of the orthogonal data symbols is weighted with the moving average value of the corresponding phase component of the pilot symbols, and summed with the other weighted component of the data symbols to produce an output signal of the spread spectrum receiver.
CA 2139269 1993-12-30 1994-12-29 Ds/cdma receiver using moving-averaged pilot signals for weighting and phase rotation of orthogonal data symbol vectors Expired - Fee Related CA2139269C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JPJP5-354553 1993-12-30
JP35455393A JP2605615B2 (en) 1993-12-30 1993-12-30 Spread spectrum receiver

Publications (2)

Publication Number Publication Date
CA2139269A1 true CA2139269A1 (en) 1995-07-01
CA2139269C CA2139269C (en) 2001-03-20

Family

ID=18438332

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2139269 Expired - Fee Related CA2139269C (en) 1993-12-30 1994-12-29 Ds/cdma receiver using moving-averaged pilot signals for weighting and phase rotation of orthogonal data symbol vectors

Country Status (7)

Country Link
US (1) US5548613A (en)
EP (1) EP0661829B1 (en)
JP (1) JP2605615B2 (en)
KR (1) KR0142035B1 (en)
AU (1) AU681209B2 (en)
CA (1) CA2139269C (en)
DE (1) DE69432555T2 (en)

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Also Published As

Publication number Publication date
CA2139269C (en) 2001-03-20
US5548613A (en) 1996-08-20
JP2605615B2 (en) 1997-04-30
EP0661829A2 (en) 1995-07-05
KR950022350A (en) 1995-07-28
DE69432555D1 (en) 2003-05-28
AU681209B2 (en) 1997-08-21
EP0661829A3 (en) 1998-04-15
AU8176094A (en) 1995-07-06
DE69432555T2 (en) 2004-05-06
KR0142035B1 (en) 1998-07-01
JPH07202756A (en) 1995-08-04
EP0661829B1 (en) 2003-04-23

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Effective date: 20031229