JPH0331028B2 - - Google Patents

Info

Publication number
JPH0331028B2
JPH0331028B2 JP54120308A JP12030879A JPH0331028B2 JP H0331028 B2 JPH0331028 B2 JP H0331028B2 JP 54120308 A JP54120308 A JP 54120308A JP 12030879 A JP12030879 A JP 12030879A JP H0331028 B2 JPH0331028 B2 JP H0331028B2
Authority
JP
Japan
Prior art keywords
signal
frame
phase
digital signal
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 - Lifetime
Application number
JP54120308A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5643855A (en
Inventor
Yasuharu Yoshida
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
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP12030879A priority Critical patent/JPS5643855A/ja
Publication of JPS5643855A publication Critical patent/JPS5643855A/ja
Publication of JPH0331028B2 publication Critical patent/JPH0331028B2/ja
Granted 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
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
JP12030879A 1979-09-18 1979-09-18 Digital multilevel, multiphase modulation-demodulation system Granted JPS5643855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12030879A JPS5643855A (en) 1979-09-18 1979-09-18 Digital multilevel, multiphase modulation-demodulation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12030879A JPS5643855A (en) 1979-09-18 1979-09-18 Digital multilevel, multiphase modulation-demodulation system

Publications (2)

Publication Number Publication Date
JPS5643855A JPS5643855A (en) 1981-04-22
JPH0331028B2 true JPH0331028B2 (enExample) 1991-05-02

Family

ID=14783016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12030879A Granted JPS5643855A (en) 1979-09-18 1979-09-18 Digital multilevel, multiphase modulation-demodulation system

Country Status (1)

Country Link
JP (1) JPS5643855A (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494239A (en) * 1982-05-26 1985-01-15 At&T Bell Laboratories Frame synchronization and phase ambiguity resolution in QAM transmission systems
JPS62247655A (ja) * 1986-04-10 1987-10-28 Fujitsu Ltd 位相不確定性除去方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736507A (en) * 1971-08-19 1973-05-29 Communications Satellite Co Phase ambiguity resolution for four phase psk communications systems

Also Published As

Publication number Publication date
JPS5643855A (en) 1981-04-22

Similar Documents

Publication Publication Date Title
US4347616A (en) Digital multi-level multi-phase modulation communication system
US4703282A (en) Digital demodulation system
US4039961A (en) Demodulator for combined digital amplitude and phase keyed modulation signals
GB2045581A (en) Phase slip detector and systems employing the detector
US4409562A (en) Phase correction circuit employing bandpass filters
JPH0331028B2 (enExample)
US4285062A (en) Digital multi-level multi-phase modulation communication system
JPS5855709B2 (ja) 位相復調装置
US5285458A (en) System for suppressing spread of error generated in differential coding
EP0094058B1 (en) Demodulation device for composite psk-psk modulated waves
JPH06120995A (ja) ディジタル無線用受信機のフレーム同期回路
JPH0515336B2 (enExample)
US4134075A (en) Amplitude-and-phase demodulator comprising a quantization circuit
JPH0644757B2 (ja) フレ−ム同期方式
JPH0730601A (ja) データ受信装置
JP2560339B2 (ja) ディジタル復調装置
JPS61137447A (ja) 多相ｐｓｋ信号の復号装置
JPS60189354A (ja) 通信方式
JPS6331235A (ja) Ｔｄｍａフレ−ム同期方法
JPS6291044A (ja) フレ−ム同期パタ−ン検出方式
JPH03155237A (ja) ビットタイミング再生回路
JPS60107955A (ja) 基準搬送波再生回路
JPH057229A (ja) 搬送波再生回路
JPH08172462A (ja) ディジタル無線通信方式
JPS59189759A (ja) 基準搬送波再生回路