Efficient stop-and-wait type II hybrid ARQ scheme
S. Kallel · Electronics Letters · 1992
An efficient stop-and-wait ARQ protocol proposed by Sastry is modified to include a parity retransmission type II hybrid ARQ scheme. Unlike the Sastry scheme in which simple repeats of a data packet are transmitted, with the type II hybrid ARQ scheme, the data packet to be transmitted is encoded with a rate 1/2 code, and repetitions alternate between the two sequences obtained at the output of the encoder. It is found that the throughput can be substantially increased.