Outage analysis of half-duplex decode-and-forward relaying with cooperative NOMA in vehicular networks

Abstract Vehicular networks are the emerging as a promising technology in 5G communication with many challenges still unaddressed. Due to the dynamic nature of the vehicular networks, fast-varying channel conditions many of the researchers restricted their work to block fading channels. In this paper, in contrast to the orthogonal multiple accesses, cooperative non-orthogonal multiple accesses is considered for two-way decode and forward relaying with network coding to mitigate the impact of continuous-time varying channels. An explicit closed form expression is derived for sum outage probabilities at source and destination. Simulation results manifest that packet error rate decreases for optimal data phases and the position of the decodable relay from source and transmit power affirm the impact over sum outage probabilities compared to two-way amplify and forward relaying and decode and forward with coding and decoding schemes.