Performance of hybrid II ARQ schemes using punctured RS code for wireless ATM

To overcome the high level and bursty nature of bit errors in wireless chan nels a new data link control (DLC) frame structure for transmitting wireles s ATM cells is proposed. The throughput, undetected error probability and e rror correcting probability of the proposed DLC frame structure employing a hybrid II ARQ (automatic repeat request) scheme with RS (Reed-Solomon) cod e are analysed for a fading channel that is characterised by a two-state Ma rkov chain model. Using the analysis method, parameters of the proposed DLC structure can be determined so that throughput performance is optimised in a wireless channel with bursty errors. Numerical examples are presented to demonstrate the effects of burstiness and parameters of the proposed DLC f rame format on performance. To verify the analytical model, analytical resu lts and simulation results are compared. It is observed that the effect of channel fading on the throughput is not necessarily negative.