GRATIS: Free Bits in the Network

Date Added: Sep 2010
Format: PDF

Conventional Signal-to-Noise (SNR) based rate adaptation algorithms in wireless networks provide limited flexibility in terms of the maximum achievable data rates. Transmitters are often forced to step down to a lower data rate due to the lack of an intermediate rate despite having a higher SNR than the minimum required for the lower rate. In this paper, the authors propose a novel scheme that provides increased flexibility to the MAC layer by providing multiple step down rates, while utilizing client channel diversity to transmit independent packets to multiple users: This is an example of simultaneous transmission.