JPS5637756A - Transmitting device for time-division multiple connection system - Google Patents

Transmitting device for time-division multiple connection system

Info

Publication number
JPS5637756A
JPS5637756A JP11377679A JP11377679A JPS5637756A JP S5637756 A JPS5637756 A JP S5637756A JP 11377679 A JP11377679 A JP 11377679A JP 11377679 A JP11377679 A JP 11377679A JP S5637756 A JPS5637756 A JP S5637756A
Authority
JP
Japan
Prior art keywords
terminal
phase
modulator
signal
control 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
JP11377679A
Other languages
Japanese (ja)
Other versions
JPH0222583B2 (en
Inventor
Masaaki Atobe
Yoshimi Tagashira
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 JP11377679A priority Critical patent/JPS5637756A/en
Publication of JPS5637756A publication Critical patent/JPS5637756A/en
Publication of JPH0222583B2 publication Critical patent/JPH0222583B2/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
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
    • H04L27/2042—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states
    • H04L27/2046—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states in which the data are represented by carrier phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/10—Arrangements for initial synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To obtain both the reference carrier wave and the bit timing signal in a short time, by securing the phases alpha and beta alternately for the pre-word and then carrying out the N-phase offset PSK modulation of the fixed phase in accordance with the transmission signal for the information word respectively. CONSTITUTION:For the transmitting device of the time-division multiple connection system suited to the satellite communication system, the output of the carrier oscillator 1 is supplied to the double-phase modulator 2 or the N-phase modulator 4 via the change-over switch 6. The modulator 2 is controlled by the rectangular wave signal of the cycle 2T (T: symbol period) sent from the terminal 3, and then gives a phase modulation of alpha and beta to the carrier wave. The modulator 4 performs a phase modulation of 2pii/N (i=0-N-1) in correspondence to the transmission code supplied from the terminals 5 and 5'. And the outputs of both modulators pass through the switch 6' controlled by the control signal supplied from the terminal 7 and is then applied to the gate circuit 8. The switches 6 and 6' are connected to the lower and upper sides in the case of the preword and the information word each and by the control signal to be applied to the terminal 7. And the burst-type transmission signal is delivered to the terminal 10 by the gate ON/OFF control signal to be applied to the terminal 9.
JP11377679A 1979-09-05 1979-09-05 Transmitting device for time-division multiple connection system Granted JPS5637756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11377679A JPS5637756A (en) 1979-09-05 1979-09-05 Transmitting device for time-division multiple connection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11377679A JPS5637756A (en) 1979-09-05 1979-09-05 Transmitting device for time-division multiple connection system

Publications (2)

Publication Number Publication Date
JPS5637756A true JPS5637756A (en) 1981-04-11
JPH0222583B2 JPH0222583B2 (en) 1990-05-21

Family

ID=14620821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11377679A Granted JPS5637756A (en) 1979-09-05 1979-09-05 Transmitting device for time-division multiple connection system

Country Status (1)

Country Link
JP (1) JPS5637756A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194451A (en) * 1982-05-10 1983-11-12 Kanto Denshi Kiki Hanbai Kk Modulating and demodulating device of optical communication
JPS59104880A (en) * 1982-12-07 1984-06-16 Canon Inc Image pickup device
JPS6024793A (en) * 1983-07-19 1985-02-07 Matsushita Electric Ind Co Ltd Color solid-state image pickup device
JPS60169962U (en) * 1984-04-19 1985-11-11 日本電気株式会社 Transmitter/receiver for digital signal transmission
JPS60169963U (en) * 1984-04-19 1985-11-11 日本電気株式会社 Transmitter for digital signal transmission

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4846205A (en) * 1971-10-13 1973-07-02

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4846205A (en) * 1971-10-13 1973-07-02

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58194451A (en) * 1982-05-10 1983-11-12 Kanto Denshi Kiki Hanbai Kk Modulating and demodulating device of optical communication
JPS59104880A (en) * 1982-12-07 1984-06-16 Canon Inc Image pickup device
JPS6024793A (en) * 1983-07-19 1985-02-07 Matsushita Electric Ind Co Ltd Color solid-state image pickup device
JPS60169962U (en) * 1984-04-19 1985-11-11 日本電気株式会社 Transmitter/receiver for digital signal transmission
JPS60169963U (en) * 1984-04-19 1985-11-11 日本電気株式会社 Transmitter for digital signal transmission
JPH0543554Y2 (en) * 1984-04-19 1993-11-02
JPH0543555Y2 (en) * 1984-04-19 1993-11-02

Also Published As

Publication number Publication date
JPH0222583B2 (en) 1990-05-21

Similar Documents

Publication Publication Date Title
US3353101A (en) Demodulation apparatus for phasemodulated telegraphic code
JPS5637756A (en) Transmitting device for time-division multiple connection system
JPS5637755A (en) Multiphase modulating device
JPS5763925A (en) Transmitter for time-division multiplex radio communication
GB947430A (en) Improvements in or relating to pulse-code modulation transmission systems
JPS52109811A (en) Amplitude phase modulation communication system
JPS57183161A (en) 2n-phase phase modulator
GB991764A (en) Improvements in or relating to electrical signalling systems
JPS5668039A (en) Two-way light communication system
JPS5410601A (en) Representative address control system for loop communication system
JPS56157150A (en) Composite digital communication system
JPS55105491A (en) Data exchange system
JPS5588458A (en) Modulation system
GB1460078A (en) Demodulator circuits for phase-modulated signals
JPS5539475A (en) Radio transmission system for traffic control
KR940013281A (en) Dual Sampling Rate Control Circuit of Delta Modulation Exchange System
SU902297A1 (en) Device for transmitting frequency-modulated signals
JPS5449010A (en) Removing system for phase indeterminacy
SU788412A1 (en) Device for synchronizing timing generators of digital switching units
JPS57164634A (en) Time division multidirectional communication system
JPS5365011A (en) Channel modulating and demodulating unit for phase modulation communicatingunit
JPS57111715A (en) Clock switching system
JPS5393718A (en) Interference detecting system for multi-phase modulation same frequencyband polarized wave sharing communication
JPS5539410A (en) Increasing method of transmission efficiency for data communication
JPS54146914A (en) Diversity receiving system