Title :
On FM threshold extension by click noise elimination
Author :
Polacek, M. ; Shitz, Shlomo Shamai ; Bar-David, I.
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
fDate :
3/1/1988 12:00:00 AM
Abstract :
The validity of the click noise method of S.O. Rice (1963) for describing the performance of an analog threshold-extending receiver is established within the scope of a simulated environment. The significance of the received signal envelope for enhancing the detection of clicks is examined, and it is shown that a reliable click detector must make use of signal memory. A `genie-aided´ errorless click detector could lower the FM threshold by at least 6 dB. Threshold extension of 2.75 dB is observed under simulated conditions, with a realizable, clicks-cancelling receiver at a modulation index of five
Keywords :
demodulation; frequency modulation; noise; signal detection; FM threshold extension; analog threshold-extending receiver; click detector; click noise elimination; clicks-cancelling receiver; modulation index; received signal envelope; signal memory; simulated environment; Communications Society; Envelope detectors; Gaussian noise; Modulation; Noise cancellation; Redundancy; Reliability engineering; Research and development; Signal to noise ratio; Working environment noise;
Journal_Title :
Communications, IEEE Transactions on
