Study of performance of transmit beamforming and MU-MIMO mechanisms in IEEE 802.11ac WLANs
IEEE 802.11ac is the fifth generation in Wi-Fi networking standard which will be a boom to the next generation wireless networks. It will bring fast, high quality video streaming and nearly instantaneous data syncing and backup to notebooks, tablets and mobile phones that have become our everyday companions co-existing with the other legacy 802.11 standards. The most important features proposed in the IEEE 802.11ac amendment include larger channel bandwidth of 160 MHz, a denser modulation scheme 256 quadrature amplitude modulation(QAM) and a MU-MIMO ( multiuser MIMO) supporting up to eight spatial streams. This paper proposes to detect the spatial streams in 802.11ac device using (2×2), (4×4), (8×8) MU-MIMO systems using some of the MIMO detection algorithms. Hence, the main aim of this paper is to evaluate the effect of Detectors/Interference Canceller (IC) like Zero-forcing (ZF),Minimum mean squared error (MMSE) and the proposed ZF-Successive IC(SIC) with Optimal Peak Power Ordering (OPPO), ZF -SIC-OPPO for WLAN on the performance of 802.11ac standard in a Rayleigh fading channel.