An efficient selective-repeat arq scheme for half-duplex infrared links under high bit error rate conditions

Abstract

Large window size associated with high-speed infrared links reduces the throughput for IrDA adopted go-back- N automatic repeat request (ARQ) scheme of error control rather drastically under high bit error rate (BER) conditions. In this paper, we investigate and analyze a selective-repeat ARQ scheme which operates with a finite receiver buffer and a finite range of sequence numbers in order to achieve higher throughput for half-duplex infrared links at high BER. Simulation results show that it significantly outperforms the existing go-back-N ARQ scheme over a range of BERs including high BER. We also examine the effect of link layer parameters, such as frame length, and physical layer parameters, such as minimum turn around time on the performance of the proposed ARQ scheme.