METHOD FOR SUPPRESSING NARROW-BAND NOISE IN BROADBAND COMMUNICATION SYSTEM

FIELD: radio engineering. ^ SUBSTANCE: broadband noise signal is shaped in frequency band (F0, F1) of transmission channel and modulated according to modulation mechanism; signal obtained in the process is passed through propagation medium and received together with superimposed narrow-band noise, f...

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Bibliographic Details
Main Authors BOBKOV M.N, GALITSYN A.A, KALUGIN V.V
Format Patent
LanguageEnglish
Russian
Published 10.07.2004
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TRANSMISSION
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Summary:FIELD: radio engineering. ^ SUBSTANCE: broadband noise signal is shaped in frequency band (F0, F1) of transmission channel and modulated according to modulation mechanism; signal obtained in the process is passed through propagation medium and received together with superimposed narrow-band noise, filtered off in frequency band (F0, F1), and two signals are shaped of which one is generated as result of amplification of filtered-off signal and amplitude limiting, second signal being mentioned filtered-off one or linearly amplified filtered-off signal without changing its waveform; two signals obtained are multiplied, and resultant signal is filtered in frequency band [Fnrw, (F1-F0)]; envelope of signal obtained is separated and demodulated to produce information signal, where Fnrw is frequency band of noise-voltage amplitude square spectrum variation. ^ EFFECT: enhanced suppression ratio of narrow-band noise. ^ 1 cl, 6 dwg
Bibliography:Application Number: RU20020122545