JPS56164635A - Bright line interference eliminating circuit - Google Patents

Bright line interference eliminating circuit

Info

Publication number
JPS56164635A
JPS56164635A JP6759380A JP6759380A JPS56164635A JP S56164635 A JPS56164635 A JP S56164635A JP 6759380 A JP6759380 A JP 6759380A JP 6759380 A JP6759380 A JP 6759380A JP S56164635 A JPS56164635 A JP S56164635A
Authority
JP
Japan
Prior art keywords
bright line
line interference
signal
sinusoidal wave
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.)
Granted
Application number
JP6759380A
Other languages
Japanese (ja)
Other versions
JPS6133491B2 (en
Inventor
Junji Namiki
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
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6759380A priority Critical patent/JPS56164635A/en
Priority to US06/257,234 priority patent/US4380082A/en
Publication of JPS56164635A publication Critical patent/JPS56164635A/en
Publication of JPS6133491B2 publication Critical patent/JPS6133491B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/08—Modifications for reducing interference; Modifications for reducing effects due to line faults ; Receiver end arrangements for detecting or overcoming line faults
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)

Abstract

PURPOSE:To eliminate the bright line interference, by multiplying between a base band signal and a transmission code estimated value by a coefficient of complex number and subtracting said difference signal from the base band signal. CONSTITUTION:A bright line interference signal from an FM in an input signal is detected by an error detector 100, synchronism is taken by a phase locked loop 300 and it is fed to a coefficient circuit 400 as a sinusoidal wave. The complex number fed to a terminal 405 is variably changed and a sinusoidal wave having the same amplitude and the same phase as the bright line interference by said FM is produced. The bright line interference included in the input signal can be eliminated by subtracting this sinusoidal wave from the input signal by the subtractor.
JP6759380A 1980-05-21 1980-05-21 Bright line interference eliminating circuit Granted JPS56164635A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP6759380A JPS56164635A (en) 1980-05-21 1980-05-21 Bright line interference eliminating circuit
US06/257,234 US4380082A (en) 1980-05-21 1981-04-24 Digital signal receiver with FM interference elimination capability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6759380A JPS56164635A (en) 1980-05-21 1980-05-21 Bright line interference eliminating circuit

Publications (2)

Publication Number Publication Date
JPS56164635A true JPS56164635A (en) 1981-12-17
JPS6133491B2 JPS6133491B2 (en) 1986-08-02

Family

ID=13349353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6759380A Granted JPS56164635A (en) 1980-05-21 1980-05-21 Bright line interference eliminating circuit

Country Status (1)

Country Link
JP (1) JPS56164635A (en)

Also Published As

Publication number Publication date
JPS6133491B2 (en) 1986-08-02

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