JPS5489517A - Radio communication system - Google Patents

Radio communication system

Info

Publication number
JPS5489517A
JPS5489517A JP15882677A JP15882677A JPS5489517A JP S5489517 A JPS5489517 A JP S5489517A JP 15882677 A JP15882677 A JP 15882677A JP 15882677 A JP15882677 A JP 15882677A JP S5489517 A JPS5489517 A JP S5489517A
Authority
JP
Japan
Prior art keywords
subcarrier
synchronizing
output
signal
time
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
JP15882677A
Other languages
Japanese (ja)
Other versions
JPS6056344B2 (en
Inventor
Hideo Morita
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 JP52158826A priority Critical patent/JPS6056344B2/en
Publication of JPS5489517A publication Critical patent/JPS5489517A/en
Publication of JPS6056344B2 publication Critical patent/JPS6056344B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE: To make it possible to shorten a time required to detect a synchronizing signal by containing a synchronizing control signal in some parts of bits of a pulse string modulated primarily.
CONSTITUTION: Output (a) of subcarrier source 17 has its subcarrier pulses equivalent to rise parts of clock signal (b) removed by control circuit 21 as shown by (c) and is supplied to primary modulator 16, where phase modulation (e), for example, is done by output signal (d) of terminal equipment 18, and the output of main carrier source 15 is amplitude-modulated 14 and sent out by a radio carrier of center frequency (f1). On the other hand, a radio carrier transmitted at frequency (f2) from radio station 2 is detected (e) by the 1st detector 19 and clock pulse (g) is obtained by synchronizing regenerative circuit 23. Namely, regenerated clocks can be obtained immediately after pulses constituting a subcarrier are generated (approximate time T), so that the rise time requiring several clocks (NT time NT, N=5, 6...) can be shortened remarkably.
COPYRIGHT: (C)1979,JPO&Japio
JP52158826A 1977-12-27 1977-12-27 Wireless communication method Expired JPS6056344B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52158826A JPS6056344B2 (en) 1977-12-27 1977-12-27 Wireless communication method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52158826A JPS6056344B2 (en) 1977-12-27 1977-12-27 Wireless communication method

Publications (2)

Publication Number Publication Date
JPS5489517A true JPS5489517A (en) 1979-07-16
JPS6056344B2 JPS6056344B2 (en) 1985-12-10

Family

ID=15680215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52158826A Expired JPS6056344B2 (en) 1977-12-27 1977-12-27 Wireless communication method

Country Status (1)

Country Link
JP (1) JPS6056344B2 (en)

Also Published As

Publication number Publication date
JPS6056344B2 (en) 1985-12-10

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