GB0426477D0 - Methods and apparatus for symmetrical phase-shift keying - Google Patents

Methods and apparatus for symmetrical phase-shift keying

Info

Publication number
GB0426477D0
GB0426477D0 GBGB0426477.6A GB0426477A GB0426477D0 GB 0426477 D0 GB0426477 D0 GB 0426477D0 GB 0426477 A GB0426477 A GB 0426477A GB 0426477 D0 GB0426477 D0 GB 0426477D0
Authority
GB
United Kingdom
Prior art keywords
methods
shift keying
symmetrical phase
symmetrical
phase
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
GBGB0426477.6A
Other versions
GB2420950A (en
GB2420950B (en
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.)
Via Technologies Inc
Original Assignee
Via 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 Via Technologies Inc filed Critical Via Technologies Inc
Priority to GB0426477A priority Critical patent/GB2420950B/en
Publication of GB0426477D0 publication Critical patent/GB0426477D0/en
Publication of GB2420950A publication Critical patent/GB2420950A/en
Application granted granted Critical
Publication of GB2420950B publication Critical patent/GB2420950B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3411—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power reducing the peak to average power ratio or the mean power of the constellation; Arrangements for increasing the shape gain of a signal set

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB0426477A 2004-12-02 2004-12-02 Methods and apparatus for symmetrical phase-shift keying Active GB2420950B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0426477A GB2420950B (en) 2004-12-02 2004-12-02 Methods and apparatus for symmetrical phase-shift keying

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0426477A GB2420950B (en) 2004-12-02 2004-12-02 Methods and apparatus for symmetrical phase-shift keying

Publications (3)

Publication Number Publication Date
GB0426477D0 true GB0426477D0 (en) 2005-01-05
GB2420950A GB2420950A (en) 2006-06-07
GB2420950B GB2420950B (en) 2009-09-02

Family

ID=34043951

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0426477A Active GB2420950B (en) 2004-12-02 2004-12-02 Methods and apparatus for symmetrical phase-shift keying

Country Status (1)

Country Link
GB (1) GB2420950B (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5642384A (en) * 1993-07-06 1997-06-24 Ericsson Inc. Trellis coded modulation scheme with low envelope variation for mobile radio by constraining a maximum modulus of a differential phase angle

Also Published As

Publication number Publication date
GB2420950A (en) 2006-06-07
GB2420950B (en) 2009-09-02

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