A Bch Error Recovery Scheme for Adaptive Error Control in Wireless Networks

In this paper, we evaluate the performance of an adaptive error correction scheme for Wireless ATM Networks (WATM). This scheme attempts to minimize the system throughput in order to satisfy the user defined Quality of Service (QoS) constraints. Indeed, error control for high speed wireless ATM networks is an important research topic even wireless communication channels are highly affected by unpredictable factors like co-channel interference, adjacent channel interference, propagation path loss and multipath fading. We propose an intelligentagent architecture to implement our mechanism “A-BCHFEC” (Adaptive BCH FEC Scheme) for Rayleigh fading environment. Intelligent agents are distributed over all system entities. In the latter, base station agents cooperate with other agents to choose the appropriate BCH coding scheme related to a specific level of Signal-toNoise-Ratio (SNR). Finally, we illustrate our implementation by some simulation results from a cellular system. These results show that the adaptive scheme using BCH codes improves significantly the performance of WATM networks.