A Novel Throughput Improvement Algorithm for High Density Wireless LAN

The tremendous growth in high-end multimedia applications is increasing day by day. It leads to explore and discover the techniques which will improve the capacity and coverage area for a wireless local area network (WLAN). This paper proposes a novel throughput improvement algorithm evaluate-all-integer-partition (EAIP) for the modified version of distributed coordination function (DCF) which gives the significant performance gain over the existing re-evaluate optimal integer partition (ROIP) algorithm. Among M available links between access points (APs) and end-users, EAIP selects the optimal links that can be shared in space or time to maximize the network throughput. The proposed EAIP algorithm facilitates the simultaneous packet transmission as compared to the standard DCF to increase the overall network throughput. However, the achievable rate for a single link decreases due to the increase in interference. The performance in terms of throughput of 802.11 WLAN has been evaluated and compared to the existing ROIP algorithm. Results show that the EAIP algorithm improves the throughput of the IEEE 802.11 WLAN by 40% as compared to the existing ROIP.