Effectiveness of Selective Reject (SREJ) Automatic Repeat Request (ARQ) scheme with RR-coding in Infrared Wireless LANs
نویسندگان
چکیده
Advanced Infrared (AIr) protocol is the Infrared Data Association (IrDA) proposal for indoor optical wireless LANs. AIr utilizes a GoBack-N (GBN) Automatic Repeat Request (ARQ) retransmission scheme at the LC layer to cope with transmission errors. AIr also utilizes Repetition Rate (RR) coding to reach stations with low Signal to Noise Ratios (SNR). This paper studies the effectiveness of replacing the GBN ARQ scheme with a Selective Reject (SREJ) ARQ scheme. An analytical model that evaluates the packet error rate as a function of SNR and RR is presented. By employing analytical models for the performance of GBN and SREJ ARQ schemes, the SNR gain for receivers equipped with infinite buffers implementing the SREJ ARQ scheme is studied.
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