A Convolutional Coded ARQ Scheme with Retransmission Criterion Based on an Estimated Decoding Error Rate
Hiroyuki FUJIWARA, Hirosuke YAMAMOTO and Jinqiao REN
- A new Hybrid-ARQ scheme with a convolutional code and the Viterbi decoding is proposed, which uses the packet combining technique and a retransmission criterion based on an estimated decoding error rate. The throughput and bit error rate are evaluated by theoretical bounds and computer simulations. It is shown that a given error rate tolerance can be attained with good throughput for any signal to noise ratio, i.e. for the slow time-varying channels. Furthermore, the throughput performance can be improved by retransmitting not all but a part of packet.
- Key words: ARQ, convolutional code, Viterbi decoding, packet combining
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