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Performance Analysis of IEEE 802.11n Under Different STBC Rates Using 64-QAM

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Executive Summary

The main focus of current research and development for the next-generation Wireless Local Area Network (WLAN) communication systems is to enhance the link throughput and channel capacity. In this paper, the performance analysis of the ongoing next-generation WLAN standard, IEEE 802.11n high throughput WLAN PHY layer is presented. The design criteria is based on a 4x4 MIMO-OFDM scheme using 64-QAM (Quadrature Amplitude Modulation) technique under Rayleigh frequency-selective fading and flat fading channels. Simulation results show that a significant performance gain, 4~7 dB, depending on the channel selection, can be achieved when 1/2 Space-Time Block Code (STBC) rate is applied with respect to Bit-Error-Rate (BER).

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