JPS5760746A - Transmission method for radio digital signal - Google Patents

Transmission method for radio digital signal

Info

Publication number
JPS5760746A
JPS5760746A JP55135578A JP13557880A JPS5760746A JP S5760746 A JPS5760746 A JP S5760746A JP 55135578 A JP55135578 A JP 55135578A JP 13557880 A JP13557880 A JP 13557880A JP S5760746 A JPS5760746 A JP S5760746A
Authority
JP
Japan
Prior art keywords
digital signal
bits
signal
pairs
receiving
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
JP55135578A
Other languages
Japanese (ja)
Other versions
JPS6132B2 (en
Inventor
Katsuya Kaneko
Takeshi Hattori
Kenji Imamura
Hitoshi Komagata
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55135578A priority Critical patent/JPS5760746A/en
Publication of JPS5760746A publication Critical patent/JPS5760746A/en
Publication of JPS6132B2 publication Critical patent/JPS6132B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To discriminate the receiving state with a high precision by a simple circuit constitution, by transmitting the digital signal of bits 1 and 0 repeatedly in stead of a tone signal and by detecting a pair of every two adjacent bits in the receiving side. CONSTITUTION:In case a radio frequency is used to transmit a digital signal, the digital signal of bits 1 and 0 where the length of one bit is T and the number of bits required for detection is an N pattern is transmitted repeatedly in stead of the tone signal from the transmission side. This digital signal from the transmission side is received by the receiving side, and pairs of two adjacent bits are detected, and numbers of pairs (1, 0) and (0, 1) are counted; and when the difference between both pairs is larger than a preliminarily determined value, normal receiving of the signal is discriminated. Thus, the circuit constitution is simplified in comparison with the case where the tone signal is used, and the receiving state is discriminated with a high precision.
JP55135578A 1980-09-29 1980-09-29 Transmission method for radio digital signal Granted JPS5760746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55135578A JPS5760746A (en) 1980-09-29 1980-09-29 Transmission method for radio digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55135578A JPS5760746A (en) 1980-09-29 1980-09-29 Transmission method for radio digital signal

Publications (2)

Publication Number Publication Date
JPS5760746A true JPS5760746A (en) 1982-04-12
JPS6132B2 JPS6132B2 (en) 1986-01-06

Family

ID=15155084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55135578A Granted JPS5760746A (en) 1980-09-29 1980-09-29 Transmission method for radio digital signal

Country Status (1)

Country Link
JP (1) JPS5760746A (en)

Also Published As

Publication number Publication date
JPS6132B2 (en) 1986-01-06

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