GB2311425B - Method of demodulating an input signal and demodulator for performing the method - Google Patents

Method of demodulating an input signal and demodulator for performing the method

Info

Publication number
GB2311425B
GB2311425B GB9705876A GB9705876A GB2311425B GB 2311425 B GB2311425 B GB 2311425B GB 9705876 A GB9705876 A GB 9705876A GB 9705876 A GB9705876 A GB 9705876A GB 2311425 B GB2311425 B GB 2311425B
Authority
GB
United Kingdom
Prior art keywords
demodulating
demodulator
input signal
input
signal
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.)
Expired - Fee Related
Application number
GB9705876A
Other versions
GB2311425A (en
GB9705876D0 (en
Inventor
Brian Herbert Beech
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.)
Digi Media Vision Ltd
Synamedia Ltd
Original Assignee
NDS Ltd
Digi Media Vision Ltd
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 NDS Ltd, Digi Media Vision Ltd filed Critical NDS Ltd
Publication of GB9705876D0 publication Critical patent/GB9705876D0/en
Publication of GB2311425A publication Critical patent/GB2311425A/en
Application granted granted Critical
Publication of GB2311425B publication Critical patent/GB2311425B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0028—Correction of carrier offset at passband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0055—Closed loops single phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0057—Closed loops quadrature phase

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
GB9705876A 1996-03-22 1997-03-21 Method of demodulating an input signal and demodulator for performing the method Expired - Fee Related GB2311425B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9606114.8A GB9606114D0 (en) 1996-03-22 1996-03-22 Improvements in or relating to digital satellite receivers

Publications (3)

Publication Number Publication Date
GB9705876D0 GB9705876D0 (en) 1997-05-07
GB2311425A GB2311425A (en) 1997-09-24
GB2311425B true GB2311425B (en) 2000-06-21

Family

ID=10790886

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9606114.8A Pending GB9606114D0 (en) 1996-03-22 1996-03-22 Improvements in or relating to digital satellite receivers
GB9705876A Expired - Fee Related GB2311425B (en) 1996-03-22 1997-03-21 Method of demodulating an input signal and demodulator for performing the method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB9606114.8A Pending GB9606114D0 (en) 1996-03-22 1996-03-22 Improvements in or relating to digital satellite receivers

Country Status (1)

Country Link
GB (2) GB9606114D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999026339A1 (en) * 1997-11-18 1999-05-27 Scientific-Atlanta, Inc. Method and apparatus for locating digital carrier signals
GB2379105B (en) * 2001-08-24 2003-07-09 Roke Manor Research Improvements relating to fast frequency-hopping modulators and demodulators
JP3838230B2 (en) * 2003-08-19 2006-10-25 ソニー株式会社 Propagation path characteristic estimation system, propagation path characteristic estimation method, communication apparatus, and communication method
EP1808021A1 (en) 2004-11-03 2007-07-18 THOMSON Licensing Data receiving circuit with current mirror and data slicer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1348546A (en) * 1971-07-29 1974-03-20 Standard Telephones Cables Ltd Phase locked loop
US5325401A (en) * 1992-03-13 1994-06-28 Comstream Corporation L-band tuner with quadrature downconverter for PSK data applications

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1348546A (en) * 1971-07-29 1974-03-20 Standard Telephones Cables Ltd Phase locked loop
US5325401A (en) * 1992-03-13 1994-06-28 Comstream Corporation L-band tuner with quadrature downconverter for PSK data applications

Also Published As

Publication number Publication date
GB2311425A (en) 1997-09-24
GB9606114D0 (en) 1996-05-22
GB9705876D0 (en) 1997-05-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010321