Go-Back-N ARQ Schemes for Point-to-Multipoint Satellite Communications

The conventional go-back-
N
ARQ is modified so as to be applicable to point-to-multipoint communication by using a control block that indicates the occurrence of retransmission to all the receivers. This paper also presents a "tandem error control scheme," in which the up-link and the down-links use separate go-back-
N
ARQ's. The throughput efficiency of the tandem go-back-
N
ARQ is analyzed. Specifically, the mathematical formula for the throughput efficiency is obtained for cases in which there is a single receiver. The throughput efficiencies of these schemes are also evaluated by simulation.