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Throughput Efficiency of the Fundamental MultiReceiver GoBackN ARQ Scheme over a Dependent PacketError Channel
Satomi AMAKI Masaharu KOMATSU
Publication
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Vol.E85A
No.6
pp.13711378 Publication Date: 2002/06/01 Online ISSN:
DOI: Print ISSN: 09168508 Type of Manuscript: PAPER Category: Reliability, Maintainability and Safety Analysis Keyword: throughput efficiency, multireceiver, gobackN ARQ scheme, Markov error channel,
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Summary:
It has been shown that the performances of singlereceiver ARQ schemes are largely dependent on the packeterror process, i.e., for dependent packeterror environment, they are under or over estimated by analyzing them under the assumption that packeterrors occur at random. While, multireceiver ARQ's have not been analyzed and evaluated for dependent packeterror process. In this paper, we analyze the throughput efficiency of the fundamental multireceiver GobackN ARQ scheme, which can be implemented very simply, over an unreliable channel modeled by the twostate Markov process. Any receiver erroneously receives a packet with probability inherent to each state. From numerical results, we show that the throughput efficiency of the fundamental multireceiver GoBackN ARQ scheme depends on the number of receivers, roundtripdelay, and the characteristic of the Markov process. Also we show that the throughput efficiency of the fundamental multireceiver GoBackN ARQ scheme for larger decay factor and larger difference between packet error probability at each state is considerably better than that for the random error pattern.

