JPS57170644A - Eliminating circuit for cross polarization interference - Google Patents

Eliminating circuit for cross polarization interference

Info

Publication number
JPS57170644A
JPS57170644A JP5553081A JP5553081A JPS57170644A JP S57170644 A JPS57170644 A JP S57170644A JP 5553081 A JP5553081 A JP 5553081A JP 5553081 A JP5553081 A JP 5553081A JP S57170644 A JPS57170644 A JP S57170644A
Authority
JP
Japan
Prior art keywords
output
signal
adder
cross polarization
error detector
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
JP5553081A
Other languages
Japanese (ja)
Other versions
JPS6336692B2 (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 JP5553081A priority Critical patent/JPS57170644A/en
Priority to US06/365,143 priority patent/US4466132A/en
Priority to CA000401011A priority patent/CA1175492A/en
Publication of JPS57170644A publication Critical patent/JPS57170644A/en
Publication of JPS6336692B2 publication Critical patent/JPS6336692B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/002—Reducing depolarization effects

Abstract

PURPOSE:To eliminate interference components without using any singal other than a received signal by exercising control over cross polarization compensation in digital transmission on the basis of demodulated base-band signal information. CONSTITUTION:A cross polarization component adder 1 consists of a weighting circuit 12, a compensating adder 10, and a detector 11 and after a cross-polarized signal is multiplied by a compensation coefficient, a received polarized signal is added. The output signal of the adder 1 is applied to an error detector 2 to detect a difference between a transmitted and a received signal on the basis of the output signal of the adder 1. The output signal of the error detector 2 is applied to a correlator 30 together with the output of an oscillator 31 to apply a correlation output to an integrator 33. The output of the oscillator 31, on the other hand, is attenuated by an attenuator 37 according to the mean value of the output of the error detector, and applied as the compensation coefficient of the weighting circuit 12 together with the output of the integrator 33 passed through an inverter 34.
JP5553081A 1981-04-15 1981-04-15 Eliminating circuit for cross polarization interference Granted JPS57170644A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP5553081A JPS57170644A (en) 1981-04-15 1981-04-15 Eliminating circuit for cross polarization interference
US06/365,143 US4466132A (en) 1981-04-15 1982-04-05 Cross-polarization crosstalk elimination circuit
CA000401011A CA1175492A (en) 1981-04-15 1982-04-14 Cross-polarization crosstalk elimination circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5553081A JPS57170644A (en) 1981-04-15 1981-04-15 Eliminating circuit for cross polarization interference

Publications (2)

Publication Number Publication Date
JPS57170644A true JPS57170644A (en) 1982-10-20
JPS6336692B2 JPS6336692B2 (en) 1988-07-21

Family

ID=13001279

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5553081A Granted JPS57170644A (en) 1981-04-15 1981-04-15 Eliminating circuit for cross polarization interference

Country Status (1)

Country Link
JP (1) JPS57170644A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139739A (en) * 1983-01-29 1984-08-10 Nec Corp Cross polarization interference deleting circuit
JPS60194635A (en) * 1984-03-16 1985-10-03 Nec Corp Demodulating device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59139739A (en) * 1983-01-29 1984-08-10 Nec Corp Cross polarization interference deleting circuit
JPH0440902B2 (en) * 1983-01-29 1992-07-06 Nippon Electric Co
JPS60194635A (en) * 1984-03-16 1985-10-03 Nec Corp Demodulating device

Also Published As

Publication number Publication date
JPS6336692B2 (en) 1988-07-21

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