Performance of Reed-Solomon coded type-1 hybrid ARQ scheme on fading channels

A Reed-Solomon coded type-1 hybrid ARQ scheme based on a selective-repeat (SR) ARQ with multicopy retransmission is proposed for mobile/personal satellite communication systems of a transmitter and a receiver both with finite buffer. The performance of the proposed scheme on fading channels is analyzed. The basic idea of the strategy is the use of two modes; the SR mode and the multicopy mode. In the latter mode, erroneous blocks stored in the νN block transmitter buffer are alternatively retransmitted multiple times when ν consecutive retransmissions in the SR mode are received in error, where N denotes round-trip-delay in blocks. Numerical and simulation results for ν=1 show that the proposed scheme presents better performance than the conventional SR+ST scheme 2 of the 2N block buffer by Miller and Lin (1981)