Telecommunications – Receiver or analog modulated signal frequency converter – Carrier and single sideband
Patent
1981-09-21
1983-09-06
Ng, Jin F.
Telecommunications
Receiver or analog modulated signal frequency converter
Carrier and single sideband
455239, 455245, 455250, 179 1VL, H04B 168, H04B 116
Patent
active
044033486
ABSTRACT:
In a single sideband radio receiver utilizing a limited, pilot-controlled, gain correction arrangement (38) to compensate for radio channel fading, a signal (RECT CAP) representing receiver audio output level is utilized (97) during intersyllabic quiet intervals to increase the limiting threshold on the gain correction signal to suppress noise and interference.
REFERENCES:
patent: 2179928 (1939-11-01), Hagenhaus
patent: 2783372 (1957-02-01), Peterson et al.
patent: 4013964 (1977-03-01), Skutta
patent: 4121161 (1978-10-01), Ohsawa
patent: 4204172 (1980-05-01), Sadou et al.
patent: 4313211 (1982-01-01), Leland
patent: 4328590 (1982-05-01), Lee
"Microwave Mobile Communications" Edited by Jakes, Jr., 1974, Sec. 4-1.7, Comparison with SSB and FM, pp. 201-207.
"Impairment Mechanisms for SSB Mobile Communications at UHF with Pilot-Based Doppler/Fading Correction" by Leland et al., Bell System Technical Journal, vol. 59, No. 10, Dec. 1980.
Leland Kenneth W.
Sollenberger Nelson R.
Bell Telephone Laboratories Incorporated
Ng Jin F.
Phelan C. S.
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