GB1460513A - Measurement of noise in a communication channel - Google Patents

Measurement of noise in a communication channel

Info

Publication number
GB1460513A
GB1460513A GB2401374A GB2401374A GB1460513A GB 1460513 A GB1460513 A GB 1460513A GB 2401374 A GB2401374 A GB 2401374A GB 2401374 A GB2401374 A GB 2401374A GB 1460513 A GB1460513 A GB 1460513A
Authority
GB
United Kingdom
Prior art keywords
noise
signal
channel
attenuator
link
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.)
Expired
Application number
GB2401374A
Other languages
English (en)
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.)
POOST OFFICE
Original Assignee
POOST OFFICE
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 POOST OFFICE filed Critical POOST OFFICE
Priority to GB2401374A priority Critical patent/GB1460513A/en
Priority to AU81417/75A priority patent/AU490825B2/en
Priority to US05/580,349 priority patent/US4032716A/en
Priority to NL7506194A priority patent/NL7506194A/xx
Priority to DE19752523739 priority patent/DE2523739A1/de
Priority to JP50063975A priority patent/JPS5124818A/ja
Priority to IT68384/75A priority patent/IT1036123B/it
Priority to CA228,414A priority patent/CA1038512A/en
Priority to SE7506221A priority patent/SE403020B/xx
Priority to FR7517078A priority patent/FR2275943A1/fr
Publication of GB1460513A publication Critical patent/GB1460513A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/16—Monitoring arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
GB2401374A 1974-05-03 1974-05-30 Measurement of noise in a communication channel Expired GB1460513A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB2401374A GB1460513A (en) 1974-05-30 1974-05-30 Measurement of noise in a communication channel
AU81417/75A AU490825B2 (en) 1974-05-03 1975-05-22 Improvements in or relating tothe measurement of noise ina communication channel
US05/580,349 US4032716A (en) 1974-05-30 1975-05-23 Measurement of noise in a communication channel
NL7506194A NL7506194A (nl) 1974-05-30 1975-05-27 Werkwijze en inrichting voor het bepalen van de ruiseigenschappen van een frequentie multi- plex-communicatieverbinding.
DE19752523739 DE2523739A1 (de) 1974-05-30 1975-05-28 Verfahren und anordnung zur rauschmessung in frequenzmultiplex-uebertragungsstrecken
JP50063975A JPS5124818A (https=) 1974-05-30 1975-05-28
IT68384/75A IT1036123B (it) 1974-05-30 1975-05-28 Procedimento e dispositivo per la determinatione delle caratteristiche di una lines di comunicazione nei riguardi del rumore
CA228,414A CA1038512A (en) 1974-05-30 1975-05-29 Measurement of noise in a communications channel
SE7506221A SE403020B (sv) 1974-05-30 1975-05-30 Sett vid faststellande av en fdm-lenks brusupptredande samt apparat for genomforande av settet
FR7517078A FR2275943A1 (fr) 1974-05-30 1975-05-30 Perfectionnements aux procedes et appareils pour determiner les proprietes de bruit d'un reseau de communication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2401374A GB1460513A (en) 1974-05-30 1974-05-30 Measurement of noise in a communication channel

Publications (1)

Publication Number Publication Date
GB1460513A true GB1460513A (en) 1977-01-06

Family

ID=10204984

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2401374A Expired GB1460513A (en) 1974-05-03 1974-05-30 Measurement of noise in a communication channel

Country Status (9)

Country Link
US (1) US4032716A (https=)
JP (1) JPS5124818A (https=)
CA (1) CA1038512A (https=)
DE (1) DE2523739A1 (https=)
FR (1) FR2275943A1 (https=)
GB (1) GB1460513A (https=)
IT (1) IT1036123B (https=)
NL (1) NL7506194A (https=)
SE (1) SE403020B (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408322A (en) * 1980-11-07 1983-10-04 Satellite Business Systems Method and apparatus for measuring signal to noise ratio in a TDMA communications system
US4768203A (en) * 1987-09-18 1988-08-30 Bell Communications Research, Inc. Signal-to-noise ratio testing in adaptive differential pulse code modulation
JP3013408B2 (ja) * 1990-08-17 2000-02-28 ソニー株式会社 受信装置
DE10014395A1 (de) * 2000-03-23 2001-10-04 Siemens Ag Verfahren zur Signal-Stör-Verhältnisermittlung von über eine Funkschnittstelle eines Funk-Kommunikationssystems übertragenen Signalen
WO2013003301A1 (en) * 2011-06-27 2013-01-03 Trilithic, Inc. Method for detecting leakage in digitally modulated systems
CN106162478B (zh) * 2016-08-16 2019-08-06 北京小米移动软件有限公司 麦克风优选方法及装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987586A (en) * 1958-09-30 1961-06-06 Bell Telephone Labor Inc Cross-modulation measuring system
GB1264134A (https=) * 1968-08-14 1972-02-16
DE2000353C3 (de) * 1969-02-04 1979-11-29 Rai Radiotelevisione Italiana, Rom Verfahren und Vorrichtung zur automatischen Messung des Rauschabstandes
US3691306A (en) * 1970-07-02 1972-09-12 Francesco Molo Apparatus and process for detecting malfunctions in a frequency division multiplex system
CA999989A (en) * 1972-12-14 1976-11-16 Edgar R. Allen Measurement of noise in a communication channel

Also Published As

Publication number Publication date
SE7506221L (sv) 1975-12-01
NL7506194A (nl) 1975-12-02
FR2275943B1 (https=) 1979-03-23
IT1036123B (it) 1979-10-30
CA1038512A (en) 1978-09-12
FR2275943A1 (fr) 1976-01-16
AU8141775A (en) 1976-11-25
JPS5124818A (https=) 1976-02-28
SE403020B (sv) 1978-07-24
US4032716A (en) 1977-06-28
DE2523739A1 (de) 1975-12-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee