JPS5711564A - Transmission system for burst signal - Google Patents

Transmission system for burst signal

Info

Publication number
JPS5711564A
JPS5711564A JP8537680A JP8537680A JPS5711564A JP S5711564 A JPS5711564 A JP S5711564A JP 8537680 A JP8537680 A JP 8537680A JP 8537680 A JP8537680 A JP 8537680A JP S5711564 A JPS5711564 A JP S5711564A
Authority
JP
Japan
Prior art keywords
bit
multivalue
digital signal
symbol
symbols
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
JP8537680A
Other languages
Japanese (ja)
Other versions
JPH0136294B2 (en
Inventor
Hiroshi Shimizu
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 JP8537680A priority Critical patent/JPS5711564A/en
Publication of JPS5711564A publication Critical patent/JPS5711564A/en
Publication of JPH0136294B2 publication Critical patent/JPH0136294B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H04L25/4919—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes using balanced multilevel codes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

PURPOSE:To decrease the unbalance amount in burst signals without adding a burst synchronizing bit to the trust signals, by converting a digital signal into the absolute value of multivalue symbols of a plurality. CONSTITUTION:When a code of digital signal to be transmitted is 1000011101, since the 1st bit is 1, this digital signal is converted into a multivalue according to the table by 2-bit. The absolute value of signal in multivalue is 2, 0, 1, 3, 1. Since the 1st bit is 1, positive sign is given to the 1st symbol. Thus, the symbol is +2. The other symbols are given by negative sign when the average level of the sum of the symbols preceeding is positive, and by positive, when negative. When the code of digital signal to be transmitted is 0010011110, since the 1st bit is 0, 0 and 1 are inverted each other, this inverted signal is in multivalue by 2-bit and sign is given to each symbol with the similar operation.
JP8537680A 1980-06-24 1980-06-24 Transmission system for burst signal Granted JPS5711564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8537680A JPS5711564A (en) 1980-06-24 1980-06-24 Transmission system for burst signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8537680A JPS5711564A (en) 1980-06-24 1980-06-24 Transmission system for burst signal

Publications (2)

Publication Number Publication Date
JPS5711564A true JPS5711564A (en) 1982-01-21
JPH0136294B2 JPH0136294B2 (en) 1989-07-31

Family

ID=13856998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8537680A Granted JPS5711564A (en) 1980-06-24 1980-06-24 Transmission system for burst signal

Country Status (1)

Country Link
JP (1) JPS5711564A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729043A (en) * 1985-12-11 1988-03-01 American Telephone And Telegraph Company, At&T Bell Laboratories Digital information storage and retrieval using video signals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3902282B1 (en) 2018-12-21 2024-05-15 Sony Group Corporation Sound reproduction device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4729043A (en) * 1985-12-11 1988-03-01 American Telephone And Telegraph Company, At&T Bell Laboratories Digital information storage and retrieval using video signals

Also Published As

Publication number Publication date
JPH0136294B2 (en) 1989-07-31

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