JPS5249717A - Secondary carrier wave superposition pcm-im transmission system - Google Patents

Secondary carrier wave superposition pcm-im transmission system

Info

Publication number
JPS5249717A
JPS5249717A JP50125808A JP12580875A JPS5249717A JP S5249717 A JPS5249717 A JP S5249717A JP 50125808 A JP50125808 A JP 50125808A JP 12580875 A JP12580875 A JP 12580875A JP S5249717 A JPS5249717 A JP S5249717A
Authority
JP
Japan
Prior art keywords
carrier wave
secondary carrier
pcm
transmission system
wave superposition
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
JP50125808A
Other languages
Japanese (ja)
Other versions
JPS5513660B2 (en
Inventor
Kazuo Iguchi
Kyoji Kameo
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP50125808A priority Critical patent/JPS5249717A/en
Publication of JPS5249717A publication Critical patent/JPS5249717A/en
Publication of JPS5513660B2 publication Critical patent/JPS5513660B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J9/00—Multiplex systems in which each channel is represented by a different type of modulation of the carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Dc Digital Transmission (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:The occupancy band of secondary carrier wave modulated by subordinate signal is made so that the main signal may not be coincided with integer-timed frequency of clock frequency and further the main signal may exist near the clock frequency. In this way, the effects of clock elements to secondary carrier wave can be effectively prevented.
JP50125808A 1975-10-17 1975-10-17 Secondary carrier wave superposition pcm-im transmission system Granted JPS5249717A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50125808A JPS5249717A (en) 1975-10-17 1975-10-17 Secondary carrier wave superposition pcm-im transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50125808A JPS5249717A (en) 1975-10-17 1975-10-17 Secondary carrier wave superposition pcm-im transmission system

Publications (2)

Publication Number Publication Date
JPS5249717A true JPS5249717A (en) 1977-04-21
JPS5513660B2 JPS5513660B2 (en) 1980-04-10

Family

ID=14919415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50125808A Granted JPS5249717A (en) 1975-10-17 1975-10-17 Secondary carrier wave superposition pcm-im transmission system

Country Status (1)

Country Link
JP (1) JPS5249717A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100795A (en) * 1979-01-27 1980-07-31 Nec Corp Remote control system
JPS55109097A (en) * 1979-02-14 1980-08-21 Nec Corp Remote control system
JPS62247639A (en) * 1986-04-19 1987-10-28 Nec Corp Optical signal transmission system
US6295272B1 (en) 1998-04-20 2001-09-25 Gadzoox Networks, Inc. Subchannel modulation scheme for carrying management and control data outside the regular data channel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100795A (en) * 1979-01-27 1980-07-31 Nec Corp Remote control system
JPS55109097A (en) * 1979-02-14 1980-08-21 Nec Corp Remote control system
JPS62247639A (en) * 1986-04-19 1987-10-28 Nec Corp Optical signal transmission system
US6295272B1 (en) 1998-04-20 2001-09-25 Gadzoox Networks, Inc. Subchannel modulation scheme for carrying management and control data outside the regular data channel

Also Published As

Publication number Publication date
JPS5513660B2 (en) 1980-04-10

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