Synthesis of quasioptimum twolevel signal discriminator with level changing at unknown point
Abstract
Optimum estimates were derived for the moments at which the level of a twolevel signal changes. It is assumed that digitizing of an additive mixture of a binary signal and normal random noise results in a sequence of random quantities with irregularity manifested by a change in the mathematical expectation at an unknown point. A circuit is derived for a quasioptimum twolevel signal discriminator. The noise tolerance of the proposed discrimination method is estimated; graphs are plotted to illustrate the behavior of the logarithm, and the error probabilities which occur in testing the hypothesis of level has change by using the likelihood ratio. The receiving synthesizer is most effective under conditions of a priori indeterminacy with regard to the moment of delay of the signal.
 Publication:

USSR Rept Electron Elec Eng JPRS UEE
 Pub Date:
 January 1985
 Bibcode:
 1985RpEEE.......28K
 Keywords:

 Analog To Digital Converters;
 Digital Data;
 Optimal Control;
 Random Noise;
 Signal Analysis;
 Signal Detectors;
 Frequency Synthesizers;
 Logarithms;
 Mathematical Models;
 Noise Generators;
 Signal Detectors;
 Electronics and Electrical Engineering