Um protocolo com Retransmissão Multicópias para Comunicações Via Satélite a Altas Velocidades<br />10.14209/jcis.1999.8

Abstract

This paper aims at presenting a variation of the Go-Back-N (GB(N)) ARQ protocol which operates with a receiver buffer and with multicopy retransmissions. The proposed strategy, that uses the key idea of the Weldon's scheme, avoids buffer overflows and reduces the effect of the round trip delay. Its throughput performance is analyzed using semi-Markov process. It improves significantly the throughput efficiency of the high speed satellite communications. The numerical results show that the new strategy presents a better performance than the best known GB(N) results. Furthermore, it outperforms many finite buffer selective-repeat ARQ, over a wide range of high bit error rates. The throughput efficiency remains in a usable range even for a very high error rate conditions.