Performance of Mary feedback communication systems
Abstract
An analytical evaluation of the performance of Mary feedback communication systems with MAP strategy is presented. An approximate lower performance bound is found, using the Cauchy inequality and then using the Jensen inequality. The bounds are compared and are found to coincide, yielding an estimate of the system performance. The mean path approximation tends to underestimate the system average transmission time. It is shown that the difference between the theoretical results and the computer simulation data is rather small: approximately 1 dB in terms of average transmission time. It is also shown that feedback systems are better than oneway systems in terms of the SNR required to achieve a prescribed error probability.
 Publication:

IEE Proceedings F: Communications Radar and Signal Processing
 Pub Date:
 February 1984
 Bibcode:
 1984IPCRS.131...80K
 Keywords:

 Channels (Data Transmission);
 Communication Equipment;
 Feedback Control;
 Performance Prediction;
 Signal To Noise Ratios;
 Transmission Efficiency;
 Communication Theory;
 Computerized Simulation;
 Error Analysis;
 Extremum Values;
 Inequalities;
 Probability Theory;
 Communications and Radar