A Convolutional Coded ARQ Scheme with Retransmission Criterion Based on an Estimated Decoding Error Rate

Hiroyuki FUJIWARA  Hirosuke YAMAMOTO  Jinqiao REN  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E78-A   No.1   pp.100-110
Publication Date: 1995/01/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Information Theory and Coding Theory
ARQ,  convolutional code,  Viterbi decoding,  packet combining,  

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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.