Theory of Transmitting Discrete Messages
DEPARTMENT OF DEFENSE WASHINGTON DC
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Designing optimal communication systems with given channel characteristics is considered and parameters of systems which differ to one degree or another from the optimal are described. The values of potential resistance to interference of various signal systems when transmitting in communication channels with constant and variable parameters are found. Expressions for the carrying capacity of such channels are presented. A great deal of attention is devoted to evaluating the differences between actual apparatus circuits and ideal circuits. Recommendations are given for selecting optimal signal systems and optimal methods of reception in light of the properties of channels and the interference acting upon them.