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http://dx.doi.org/10.7840/kics.2016.41.11.1639

Performance Evaluation of Interference Alignment Technique in Wireless LAN Environment  

Yoon, Seokhyun (Dankook University, School of Electronics and Electrical Eng.)
Shin, Won-Yong (Dankook University, Department of Mobile Communications System)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.41, no.11, 2016 , pp. 1639-1644 More about this Journal
Abstract
In this paper, we consider the performance improvement that can be obtained with interference alignment (IA) technique applied to 802.11ac based multi-BSS WiFi service. To this end, we developed a system simulator consisting of a link-level PHY simulator, based on 802.11ac specification, and multi-BSS proportional-fair scheduler. Specifically, assuming perfect channel side information and synchronization of signals from multiple APs, we used a SLNR based interference alignment algorithm proposed in [13] and compared its performance with that of multiuser beamforming based time-sharing system. The performance was evaluated in terms of average throughput per BSS and 5% worst user throughput. The results show that 70 to 100% throughput gain can be obtained in this ideal scenario.
Keywords
Interference Alignment; WLAN; MIMO; Proportional fair scheduling;
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