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GB2370205B - False-synchronization detection device for a bit-synchronous circuit of a pi/4-shift DQPSK demodulator - Google Patents

False-synchronization detection device for a bit-synchronous circuit of a pi/4-shift DQPSK demodulator

Info

Publication number
GB2370205B
GB2370205B GB0206067A GB0206067A GB2370205B GB 2370205 B GB2370205 B GB 2370205B GB 0206067 A GB0206067 A GB 0206067A GB 0206067 A GB0206067 A GB 0206067A GB 2370205 B GB2370205 B GB 2370205B
Authority
GB
United Kingdom
Prior art keywords
false
bit
detection device
synchronization detection
synchronous circuit
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
GB0206067A
Other versions
GB0206067D0 (en
GB2370205A (en
Inventor
Hideaki Nobusawa
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
NEC Corp
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
Priority claimed from JP9134102A external-priority patent/JP3037201B2/en
Application filed by NEC Corp filed Critical NEC Corp
Publication of GB0206067D0 publication Critical patent/GB0206067D0/en
Publication of GB2370205A publication Critical patent/GB2370205A/en
Application granted granted Critical
Publication of GB2370205B publication Critical patent/GB2370205B/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
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0331—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop with a digital phase-locked loop [PLL] processing binary samples, e.g. add/subtract logic for correction of receiver clock
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
GB0206067A 1997-05-23 1998-05-22 False-synchronization detection device for a bit-synchronous circuit of a pi/4-shift DQPSK demodulator Expired - Fee Related GB2370205B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9134102A JP3037201B2 (en) 1997-05-23 1997-05-23 False synchronization detection device
GB9811148A GB2329559B (en) 1997-05-23 1998-05-22 False-synchronization detection device for bit-synchronous circuit of pi/4-shift dqpsk demodulator

Publications (3)

Publication Number Publication Date
GB0206067D0 GB0206067D0 (en) 2002-04-24
GB2370205A GB2370205A (en) 2002-06-19
GB2370205B true GB2370205B (en) 2002-08-14

Family

ID=26313731

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0206067A Expired - Fee Related GB2370205B (en) 1997-05-23 1998-05-22 False-synchronization detection device for a bit-synchronous circuit of a pi/4-shift DQPSK demodulator

Country Status (1)

Country Link
GB (1) GB2370205B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162505A1 (en) * 1984-04-24 1985-11-27 Koninklijke Philips Electronics N.V. Arrangement for generating a clock signal
US4653075A (en) * 1985-03-29 1987-03-24 Ford Aerospace & Communications Corp. BPSK synchronizer using computational analysis
EP0625837A2 (en) * 1993-05-19 1994-11-23 Koninklijke Philips Electronics N.V. Automatic false synchronization correction mechanism for biphase-modulated signal reception

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0162505A1 (en) * 1984-04-24 1985-11-27 Koninklijke Philips Electronics N.V. Arrangement for generating a clock signal
US4653075A (en) * 1985-03-29 1987-03-24 Ford Aerospace & Communications Corp. BPSK synchronizer using computational analysis
EP0625837A2 (en) * 1993-05-19 1994-11-23 Koninklijke Philips Electronics N.V. Automatic false synchronization correction mechanism for biphase-modulated signal reception

Also Published As

Publication number Publication date
GB0206067D0 (en) 2002-04-24
GB2370205A (en) 2002-06-19

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Legal Events

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

Effective date: 20100522