Performance analysis of a wireless multiple access scheme with network assisted diversity and ARQ control

Network-assisted diversity multiple access (NDMA) is a previously proposed multiple media access method, which provides excellent throughput efficiency for multiplexing variable-bit-rate data sources. It exploits diversity combining and signal separation techniques borrowed from the signal processing problem to recycle the information in those collided data packets, so as not to introduce throughput penalties. In this paper, we take into account the ARQ mechanism superimposed on the NDMA scheme, and study the performance of the complete data link control. The embedded Markov chain and M/G/1 queue model are used to analyze the traffic in the channel. The derived analytical results are verified by numerical simulations.