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GB2173078A - Method for performing speech-detection in scpc systems - Google Patents

Method for performing speech-detection in scpc systems

Info

Publication number
GB2173078A
GB2173078A GB08601284A GB8601284A GB2173078A GB 2173078 A GB2173078 A GB 2173078A GB 08601284 A GB08601284 A GB 08601284A GB 8601284 A GB8601284 A GB 8601284A GB 2173078 A GB2173078 A GB 2173078A
Authority
GB
United Kingdom
Prior art keywords
speech
detection
detector
carrier
noise
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
GB08601284A
Other versions
GB2173078B (en
GB8601284D0 (en
Inventor
Erno Bacs
Mihaly Gubanyl
Lajos Hanzo
Laszlo Hinsen-Kamp
Laszlo Unereczky
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.)
Tavkoezlesi Kutato Intezet
Original Assignee
Tavkoezlesi Kutato Intezet
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 Tavkoezlesi Kutato Intezet filed Critical Tavkoezlesi Kutato Intezet
Publication of GB8601284D0 publication Critical patent/GB8601284D0/en
Publication of GB2173078A publication Critical patent/GB2173078A/en
Application granted granted Critical
Publication of GB2173078B publication Critical patent/GB2173078B/en
Expired 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
    • H04B7/208—Frequency-division multiple access [FDMA]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Landscapes

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

Abstract

A method to realize the speech-detection in SCPC (Single Channel Per Carrier) satellite-communication systems, where the speech-detection is based on the evaluation of PCM-coded samples that way that the channel-carrier is enabled to be transmitted, if MA number of consecutive samples exceed the speech-treshold. On detecting noise, i.e. if the above condition is not met, and the hangover-time of the detector elapsed, an in double sense adaptive noise- and speech-treshold adjustment process is initiated. In case the length of the activating sample-burst is less, than the - for speech typical minimal - segment-length, i.e. the detector was probably activated by noise, then the value of the detector-hangover-time is chosen conveniently to be shorter, than in case of speech. By the help of this idea the duration of false carrier-transmission is minimized, and a considerable quantity of valuable satellite-energy is saved.
GB08601284A 1984-05-24 1985-05-24 Method for performing speech-detection in scpc systems Expired GB2173078B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU842006A HU190304B (en) 1984-05-24 1984-05-24 Method for implementing speech detection of satellite communication systems of individual speech channel with fix or random marking-out of the carrier
PCT/HU1985/000033 WO1985005515A1 (en) 1984-05-24 1985-05-24 Method for performing speech-detection in scpc systems

Publications (3)

Publication Number Publication Date
GB8601284D0 GB8601284D0 (en) 1986-02-26
GB2173078A true GB2173078A (en) 1986-10-01
GB2173078B GB2173078B (en) 1988-03-23

Family

ID=10957259

Family Applications (2)

Application Number Title Priority Date Filing Date
GB08530834A Expired GB2169776B (en) 1984-05-24 1985-04-26 A method and circuit arrangement for implementing pcm channel units of scps satellite-communications systems
GB08601284A Expired GB2173078B (en) 1984-05-24 1985-05-24 Method for performing speech-detection in scpc systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB08530834A Expired GB2169776B (en) 1984-05-24 1985-04-26 A method and circuit arrangement for implementing pcm channel units of scps satellite-communications systems

Country Status (5)

Country Link
JP (1) JPS61502301A (en)
DE (1) DE3590220T1 (en)
GB (2) GB2169776B (en)
HU (1) HU190304B (en)
WO (1) WO1985005515A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199805B (en) * 1963-12-09 1965-09-02 Siemens Ag Method and arrangement for secure data transmission via telephone systems
DE1803080A1 (en) * 1968-10-15 1970-06-04 Telefunken Patent Noise evaluation
SU522546A1 (en) * 1975-04-07 1976-07-25 Предприятие П/Я Р-6292 Device for extracting a signal affected by interference
SU640433A1 (en) * 1976-12-27 1978-12-30 Предприятие П/Я А-7306 Apparatus for transmitting and receiving pulse-modulated signals
SU756660A1 (en) * 1978-04-17 1980-08-15 Anatolij A Gladkikh Device for receiving information with noise suppression
US4455662A (en) * 1983-05-25 1984-06-19 Gutleber Frank S Noise code generator and pulse compression communications system
SU1115244A1 (en) * 1983-05-23 1984-09-23 Предприятие П/Я Г-4126 Device for compensating interference

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3334766A1 (en) * 1983-09-26 1985-04-11 Siemens AG, 1000 Berlin und 8000 München MULTIPROCESSOR CENTRAL CONTROL UNIT OF A SWITCHING SYSTEM, IN PARTICULAR TELEPHONE SWITCHING SYSTEM
SE439208B (en) * 1983-09-30 1985-06-03 Ericsson Telefon Ab L M PROGRAMMED CONTROL TELECOMMUNICATIONS

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199805B (en) * 1963-12-09 1965-09-02 Siemens Ag Method and arrangement for secure data transmission via telephone systems
DE1803080A1 (en) * 1968-10-15 1970-06-04 Telefunken Patent Noise evaluation
SU522546A1 (en) * 1975-04-07 1976-07-25 Предприятие П/Я Р-6292 Device for extracting a signal affected by interference
SU640433A1 (en) * 1976-12-27 1978-12-30 Предприятие П/Я А-7306 Apparatus for transmitting and receiving pulse-modulated signals
SU756660A1 (en) * 1978-04-17 1980-08-15 Anatolij A Gladkikh Device for receiving information with noise suppression
SU1115244A1 (en) * 1983-05-23 1984-09-23 Предприятие П/Я Г-4126 Device for compensating interference
US4455662A (en) * 1983-05-25 1984-06-19 Gutleber Frank S Noise code generator and pulse compression communications system

Also Published As

Publication number Publication date
GB2169776A (en) 1986-07-16
GB8530834D0 (en) 1986-01-22
DE3590220T1 (en) 1986-05-15
JPS61502301A (en) 1986-10-09
HUT37314A (en) 1985-11-28
WO1985005515A1 (en) 1985-12-05
GB2169776B (en) 1988-09-01
GB2173078B (en) 1988-03-23
GB8601284D0 (en) 1986-02-26
HU190304B (en) 1986-08-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930524