Abstract
AbstractWireless channels are highly affected by unpredictable factors such as cochannel interference, adjacent channel interference, propagation path loss, shadowing, and multipath fading. The unreliability of media seriously degrades the transmission quality. Automatic Repeat reQuest (ARQ) and Forward Error Correction (FEC) schemes are frequently used in wireless environments to reduce the high bit error rate of the channel. In this paper, we propose an adaptive error‐control scheme for wireless networks on the basis of dynamic variation of error‐control strategy as a function of the channel bit error rate, desired QoS, and number of receivers. Reed–Solomon codes are used throughout this study because of their appropriate characteristics in terms of powerful coding and implementation simplicity. Simulation results show that our adaptive error‐control protocol decreases the waste of bandwidth due to retransmissions or extra coding overheads while satisfying the QoS requirements of the receivers. Copyright © 2002 John Wiley & Sons, Ltd.
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