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A parity-bit based rate adaptation scheme for the IEEE 802.11a wireless lans

In this paper we present a simple rate adaptation scheme by taking advantage of the information of the parity-bits in the SIGNAL field of the IEEE 802.11a [1] standard. Using this mechanism, the receiver can notify the transmitter to adapt to a higher or lower data rates according to the current wireless channel condition. The goal of our scheme is to find the most efficient transmission mode with acceptable quality. Finally, we will use a physical layer (PHY) simulation platform to investigate the performance of the proposed scheme.