JPS54111212A - Micro wave line switching system - Google Patents

Micro wave line switching system

Info

Publication number
JPS54111212A
JPS54111212A JP1927178A JP1927178A JPS54111212A JP S54111212 A JPS54111212 A JP S54111212A JP 1927178 A JP1927178 A JP 1927178A JP 1927178 A JP1927178 A JP 1927178A JP S54111212 A JPS54111212 A JP S54111212A
Authority
JP
Japan
Prior art keywords
stand
receiving
circuits
transmission
signals
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
JP1927178A
Other languages
Japanese (ja)
Other versions
JPS5919498B2 (en
Inventor
Kyo Kinoshita
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 JP1927178A priority Critical patent/JPS5919498B2/en
Publication of JPS54111212A publication Critical patent/JPS54111212A/en
Publication of JPS5919498B2 publication Critical patent/JPS5919498B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/74—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for increasing reliability, e.g. using redundant or spare channels or apparatus

Abstract

PURPOSE:To realize a characteristic equivalent to the IF switching system without gerarating non-linear distortion in the direct shift relay system by frequency-converting a stand- by receiving deviation signal by a stand-by receiving deviation signal which passed through plural receiving deviation switching circuits. CONSTITUTION:In the line switching part of a transmission end, N-number transmission input signals are branched by N-number circuits, for example, 1, 6 and 11, and one output of circuits 1, 6 and 11 is switched to a stand-by line by a prescribed transmission control signal by using N-number transmission switching circuits 2, 7 and 12, and the other output of circuits 1, 6 and 11 is converted to transmission signals by N-number transmission frequency converter circfuits 3, 8, 13 and 16. Here, (N+1)- number or more stand-by receiving deviation signals for the receiving deviation frequency are generated according to N-number receiving control signals, and stand-by receiving signals are frequency-converted by the stand-by receiving deviation signal which passed through N-number reciving deviation switching circuits. As a result, the characteristic equivalent to the IF switching system can be realized without generating non-linear distortion in the direct shift relay system where IF does not exist at all.
JP1927178A 1978-02-21 1978-02-21 Microwave line switching method Expired JPS5919498B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1927178A JPS5919498B2 (en) 1978-02-21 1978-02-21 Microwave line switching method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1927178A JPS5919498B2 (en) 1978-02-21 1978-02-21 Microwave line switching method

Publications (2)

Publication Number Publication Date
JPS54111212A true JPS54111212A (en) 1979-08-31
JPS5919498B2 JPS5919498B2 (en) 1984-05-07

Family

ID=11994771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1927178A Expired JPS5919498B2 (en) 1978-02-21 1978-02-21 Microwave line switching method

Country Status (1)

Country Link
JP (1) JPS5919498B2 (en)

Also Published As

Publication number Publication date
JPS5919498B2 (en) 1984-05-07

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