JPS5267243A - Amplitude phase modulation signal demodulation unit - Google Patents

Amplitude phase modulation signal demodulation unit

Info

Publication number
JPS5267243A
JPS5267243A JP50143458A JP14345875A JPS5267243A JP S5267243 A JPS5267243 A JP S5267243A JP 50143458 A JP50143458 A JP 50143458A JP 14345875 A JP14345875 A JP 14345875A JP S5267243 A JPS5267243 A JP S5267243A
Authority
JP
Japan
Prior art keywords
phase modulation
modulation signal
demodulation unit
signal demodulation
amplitude phase
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
JP50143458A
Other languages
Japanese (ja)
Other versions
JPS5422742B2 (en
Inventor
Izumi Horikawa
Yoichi Saito
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 JP50143458A priority Critical patent/JPS5267243A/en
Publication of JPS5267243A publication Critical patent/JPS5267243A/en
Publication of JPS5422742B2 publication Critical patent/JPS5422742B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE: To eliminate effect of inperfect phase modulation by performing subtraction action at base band using multi-value discriminator comprising amplitude asjuster, transmission route equivalent low-lange band pass filter, subtractor and binary discriminator.
COPYRIGHT: (C)1977,JPO&Japio
JP50143458A 1975-12-01 1975-12-01 Amplitude phase modulation signal demodulation unit Granted JPS5267243A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50143458A JPS5267243A (en) 1975-12-01 1975-12-01 Amplitude phase modulation signal demodulation unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50143458A JPS5267243A (en) 1975-12-01 1975-12-01 Amplitude phase modulation signal demodulation unit

Publications (2)

Publication Number Publication Date
JPS5267243A true JPS5267243A (en) 1977-06-03
JPS5422742B2 JPS5422742B2 (en) 1979-08-08

Family

ID=15339162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50143458A Granted JPS5267243A (en) 1975-12-01 1975-12-01 Amplitude phase modulation signal demodulation unit

Country Status (1)

Country Link
JP (1) JPS5267243A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52114254A (en) * 1976-03-22 1977-09-24 Nec Corp Demodulation unit
JP2003515975A (en) * 1999-11-23 2003-05-07 トムソン ライセンシング ソシエテ アノニム Automatic Gain Control for Hierarchical QAM Transmission

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52114254A (en) * 1976-03-22 1977-09-24 Nec Corp Demodulation unit
JPS5918900B2 (en) * 1976-03-22 1984-05-01 日本電気株式会社 demodulator
JP2003515975A (en) * 1999-11-23 2003-05-07 トムソン ライセンシング ソシエテ アノニム Automatic Gain Control for Hierarchical QAM Transmission
JP4677160B2 (en) * 1999-11-23 2011-04-27 トムソン ライセンシング Automatic gain control for hierarchical QAM transmission

Also Published As

Publication number Publication date
JPS5422742B2 (en) 1979-08-08

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