JPS57185736A - Acquisition system for time division multiplex satellite line - Google Patents

Acquisition system for time division multiplex satellite line

Info

Publication number
JPS57185736A
JPS57185736A JP7166381A JP7166381A JPS57185736A JP S57185736 A JPS57185736 A JP S57185736A JP 7166381 A JP7166381 A JP 7166381A JP 7166381 A JP7166381 A JP 7166381A JP S57185736 A JPS57185736 A JP S57185736A
Authority
JP
Japan
Prior art keywords
burst
signal
acquisition
bits
error
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
JP7166381A
Other languages
Japanese (ja)
Other versions
JPS634733B2 (en
Inventor
Koichi Nagakubo
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 JP7166381A priority Critical patent/JPS57185736A/en
Publication of JPS57185736A publication Critical patent/JPS57185736A/en
Publication of JPS634733B2 publication Critical patent/JPS634733B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]
    • H04B7/2125—Synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

PURPOSE:To prevent misdetection of a reference burst and a signal burst, by starting the acquisition of the burst of itself after the reception of the reference burst without error and performing processing as the end of burst detection even if an error within 2 bits is detected. CONSTITUTION:A reception serial data from an input terminal 1 is applied to a reference burst synchronizing pattern comparator 4 and a signal burst synchronizing pattern comparator 5 via an S-P converter 2 and comparison by each one bit is made with a prescribed pattern. When the reference burst is received without error, a flip-flop 9 is set. On the other hand, a count circuit 6 transmits a logic ''1'' to an AND circuit 14 when >=m-2 bits is coincident among the synchronizing pattern of m bits. Further, the self-burst transmission at the start of acquisition is made after a reference burst detecting output is caused at a terminal 17, and an AND gate is opened until the acquisition is finished with an output from a signal burst detection gate signal generator and the gate is opened only before and after the signal burst synchronizing pattern detection.
JP7166381A 1981-05-12 1981-05-12 Acquisition system for time division multiplex satellite line Granted JPS57185736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7166381A JPS57185736A (en) 1981-05-12 1981-05-12 Acquisition system for time division multiplex satellite line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7166381A JPS57185736A (en) 1981-05-12 1981-05-12 Acquisition system for time division multiplex satellite line

Publications (2)

Publication Number Publication Date
JPS57185736A true JPS57185736A (en) 1982-11-16
JPS634733B2 JPS634733B2 (en) 1988-01-30

Family

ID=13467063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7166381A Granted JPS57185736A (en) 1981-05-12 1981-05-12 Acquisition system for time division multiplex satellite line

Country Status (1)

Country Link
JP (1) JPS57185736A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112748689A (en) * 2020-12-30 2021-05-04 南京天际易达通信技术有限公司 Burst signal automatic acquisition system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03236U (en) * 1989-05-25 1991-01-07

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112748689A (en) * 2020-12-30 2021-05-04 南京天际易达通信技术有限公司 Burst signal automatic acquisition system
CN112748689B (en) * 2020-12-30 2022-01-04 南京天际易达通信技术有限公司 Burst signal automatic acquisition system

Also Published As

Publication number Publication date
JPS634733B2 (en) 1988-01-30

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