INFLUENCE OF INTERFERENCES AND DISTORTIONS ON THE TRANSMISSION OF DISCRETE INFORMATION WITH THE HELP OF FREQUENCY MODULATION,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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A method is proposed for calculating fringe distortions during transmission of discrete signals by frequency modulations for a wide class of interference. The use of this method is illustrated by derivation of formulas for fringe distortions which appear when there are momentary disruptions in the channel and when a low carrier frequency is used. Derivation of the principal formulas is based on the concept of the complex signal. A complex signal corresponding to an oscillation St is defined as a signal with a spectrum equal to zero on negative frequencies and coinciding with double the spectrum for the oscillation St on positive frequencies.
- Radio Communications