JPS5787631A - Phase compensating system - Google Patents

Phase compensating system

Info

Publication number
JPS5787631A
JPS5787631A JP16326080A JP16326080A JPS5787631A JP S5787631 A JPS5787631 A JP S5787631A JP 16326080 A JP16326080 A JP 16326080A JP 16326080 A JP16326080 A JP 16326080A JP S5787631 A JPS5787631 A JP S5787631A
Authority
JP
Japan
Prior art keywords
thetan
phase
reference signal
vector
signal vector
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
JP16326080A
Other languages
Japanese (ja)
Other versions
JPS5837731B2 (en
Inventor
Noboru Sonehara
Yoshihiro Jinbo
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP16326080A priority Critical patent/JPS5837731B2/en
Publication of JPS5787631A publication Critical patent/JPS5787631A/en
Publication of JPS5837731B2 publication Critical patent/JPS5837731B2/en
Expired 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
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2272—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals using phase locked loops

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To enable phase compensation without using any multiplier, by rotating a reference signal vector according to the phase variance and discriminating a correct signal vector. CONSTITUTION:An output signal gn of an automatic equalizer 8 is inputted to a discrimination circuit 9 without phase compensation. To a phase variance thetan obtained from the output of a phase controlling circuit 10, a reference signal vector an is rotated by thetan with a vector rotating device 11 and a reference signal vector thetan in phase compensation is obtained. From a difference signal en between an equalizer output signal gn and the reference signal vector thetan at the discrimination circuit 9, an error signal epsilon'n used for the correction of the automatic equalizer tap gain can directly be obtained.
JP16326080A 1980-11-21 1980-11-21 Phase correction method Expired JPS5837731B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16326080A JPS5837731B2 (en) 1980-11-21 1980-11-21 Phase correction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16326080A JPS5837731B2 (en) 1980-11-21 1980-11-21 Phase correction method

Publications (2)

Publication Number Publication Date
JPS5787631A true JPS5787631A (en) 1982-06-01
JPS5837731B2 JPS5837731B2 (en) 1983-08-18

Family

ID=15770414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16326080A Expired JPS5837731B2 (en) 1980-11-21 1980-11-21 Phase correction method

Country Status (1)

Country Link
JP (1) JPS5837731B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002067523A1 (en) * 2001-02-20 2002-08-29 Advantest Corporation Symbol point estimating device, method and program, recording medium on which the program is recorded, and modulation analyzing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002067523A1 (en) * 2001-02-20 2002-08-29 Advantest Corporation Symbol point estimating device, method and program, recording medium on which the program is recorded, and modulation analyzing device

Also Published As

Publication number Publication date
JPS5837731B2 (en) 1983-08-18

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