Effectiveness of copy-transmission in go-back-N ARQ system with selective repeat in intra-block and with limited retransmissions

Authors:
Shumji Fujii;Toyohisa Kaneko;Yukuo Hayashida
Affiliations:
College of Industrial Technology, Amagasaki, Hyogo, Japan;College of Industrial Technology, Amagasaki, Hyogo, Japan;Faculty of Science and Engineering, Saga University, Saga, Japan
Venue:
COMSNETS'10 Proceedings of the 2nd international conference on COMmunication systems and NETworks
Year:
2010

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Abstract

In this paper, we consider the effectiveness of copy-transmission for a class of Go-Back-N ARQ scheme with block of multiple frames and with limited number of retransmissions (M). The retransmitted block is consisted from multiple-copies (C) of each requested frame. Based on the exact formulas of the probability generating function of slots needed to transmit a block and numerical examples, it is shown how to determine C and M for maximizing the throughput and minimizing the average transmission delay of a block within a specified tolerable value of unrecovered frame-error rate.