NOMA-based Slotted p-Persistent CSMA with Multipacket Reception from Power Domain

In this paper, we propose a non-orthogonal multiple access (NOMA)-based p-persistent Carrier Sense Multiple Access (CSMA) technique, exploring the multipacket reception (MPR) capability from power domain. The essence of our proposed technique is that devices transmit packets in predetermined power level scheme if the channel is sensed idle, and access point (AP) performs successive interference cancellation (SIC) to mitigate co-channel interference. A semi-Markov model is established to analyze our proposed technique in terms of throughput. Simulation results validate that our proposed technique is effective to improve the throughput.