Frequency Modulation Noise Characteristics
@article{Crosby1937FrequencyMN, title={Frequency Modulation Noise Characteristics}, author={M. G. Crosby}, journal={Proceedings of the Institute of Radio Engineers}, year={1937}, volume={25}, pages={472-514} }
Theory and experimental data are given which show the improvements in signal-noise ratio effected by frequency modulation over amplitude modulation. It is shown that above a certain carrier-noise ratio in the frequency modulation receiver which is called the "improvement threshold," the frequency modulation signal-noise ratio is greater than the amplitude modulation signal-noise ratio by a factor equal to the product of a constant and the deviation ratio (the deviation ratio is equal to the… CONTINUE READING
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