Possibilities of separating two signals transmitted in the same frequency band
Abstract
The theory of the optimal reception of analog messages is used to analyze the accuracy of the simultaneous estimation of two independent messages transmitted by means of two AM or phasemodulated signals in the same frequency band. The total separation of two phasemodulated signals with synchronous carrier frequencies is demonstrated for the case when the phase shift between the carriers is equal to pi/2. An analysis is presented of the dependence of energy losses occurring in the separation of two signals with nonsynchronous carrier frequencies on the mismatch between them.
 Publication:

Radiotekhnika i Elektronika
 Pub Date:
 December 1981
 Bibcode:
 1981RaEl...26.2614B
 Keywords:

 Carrier Frequencies;
 Communication Theory;
 Signal Reception;
 Signal Transmission;
 Analog Data;
 Energy Dissipation;
 Integral Equations;
 Optimization;
 Phase Modulation;
 Communications and Radar