  In this paper, we analytically analyzed the impact of an error-prone channel
over all performance measures in a trafficsaturated IEEE 802.11 WLAN. We
calculated station's transmission probability by using the modified Markov
chain model of the backoff window size that considers the frame-error rates and
maximal allowable number of retransmission attempts. The frame error rate has a
significant impact over theoretical throughput, mean frame delay, and discard
probability. The peak throughput of a WLAN is insensitive of the maximal number
of retransmissions. Discard probabilities are insensitive to the station access
method, Basic or RTS/CTS.
