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In this paper we use real experiments to study MIMO 802.11n Rate Adaptation (RA) on a programmable AP platform. The results reveal nontrivial inter-, intra- mode opportunistic gains with respect to transient channel variations in both MIMO operation modes of Diversity and Spatial Multiplexing. To exploit these short-term gains, we design and implement a new Window-based Rate Adaptation (WRA) algorithm...
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