Accession Number : ADA136534

Title :   On Retransmission Control Policies in Multiaccess Channels.

Descriptive Note : Technical rept.,

Corporate Author : VIRGINIA UNIV CHARLOTTESVILLE DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Kazakos,D ; Merakos,L

PDF Url : ADA136534

Report Date : Dec 1982

Pagination or Media Count : 38

Abstract : Aloha-type retransmission control policies have been proposed recently by Hajek and Van loon which can be implemented on a random access channel with ternary or binary feedback. They have shown that such schemes achieve a stable throughput of 1/e = .3678 for an infinite-population Poisson arrival model, by using simple first-order recursive retransmission policies. We drive measures of the speed of convergence and steady state accuracy for the local 'model' of these policies. Using these measures, we compare two first-transmission policies, namely IFT and DFT. We extend the policies to cover the Success/Failure binary feedback case, which is not covered in the work cited. Finally, we study the effects of channel errors on the performance of the random access system.

Descriptors :   *Retransmission, Control theory, Satellite communications, Throughput, Burst transmission, Algorithms, Scheduling, Feedback, Multiple access, Wave packets, Switching, Multichannel communications, Communications traffic, Random variables, Arrival, Delay, Errors, Recursive functions, Convergence, Statistical distributions, Policies

Subject Categories : Statistics and Probability
      Cybernetics
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE