Physical layer network-coded MAC strategy

This paper introduces physical layer network coding into multiple access system and then proposes a physical layer network coded MAC strategy (PNC-MAC). The detail steps of the PNC-MAC are presented. To show the performance of the algorithm, we compare the throughput and average delay induced by the new algorithm with that by modified ALOHA strategy and tree algorithm via simulations. The results showed that when operated with our proposed PNC-MAC, multiple access system can achieve a larger throughput while the frames bear shorter average delay. Besides, in many users case, the throughput increases slightly while the average delay ascends drastically.