Science & Engineering Research Support soCiety (SERSC)
In this paper, the authors propose techniques that reduce the Medium Access Control (MAC) overhead in IEEE 802.11-based wireless networks. As the channel bit rate increases, MAC overhead becomes a major source of throughput degradation. This is due to the fact that the MAC overhead is rate-independent; it is fixed regardless of the data rate. Rate-independent overhead can be reduced by dividing a high-rate wideband channel into multiple low-rate narrow channels and send data on these narrow channels simultaneously using multiple or compound radios.