Journal of Applied Mathematics and Decision Sciences
Volume 2006 (2006), Article ID 53649, 13 pages
doi:10.1155/JAMDS/2006/53649
Abstract
We present an analysis for evaluating the probability density
function (pdf) of the noise at the output of the frequency
demodulator. It is shown that the noise is non-Gaussian and that
for low to medium signal-to-noise power ratios, its pdf differs
very significantly from the Gaussian pdf commonly assumed in
simplified analysis. These results are very important for
analyzing the performance of the PCM/FM type of modulation schemes
used in telemetry systems as illustrated in the paper.