Abstract
Wi-Fi works on the principle of IEEE 802.11 based carrier sense multiple access –collision avoidance (CSMA/CA) to transmit packets and distributed coordination function (DCF) protocol based Inter-frame spacing uses to make the gap between two frames. DCF protocol functioning & its performance depends on the number of participating stations and contention window (CW) size. Several algorithms talk about contention windows effect on the wireless performance like G. Bianchi models suggest in WLAN network the optimal value of the minimum CW is $N\surd$2Tc, where N is the number of participating station in the network and Tc is the collision time [1]. the network also gives the best performance in terms of throughput when optimal contention windows select [2]. In this paper, we describe the simulation of contention windows size effect on throughput with the number of station & in case of high dense overlap basic service set (OBSS) how does can improve the performance of the overall network and reduce collision.
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