Performance analysis of PDMA-based hybrid satellite-terrestrial networks with decode-and-forward relaying

As one of the most promising non-orthogonal multiple access (NOMA) technologies in 5G communication, pattern division multiple access (PDMA) has theoretically higher spectrum utilization and a larger communication capacity than conventional orthogonal multiple access (OMA) technologies. In this letter, PDMA is applied to hybrid satellite-terrestrial networks with decode-and-forward (DF) relaying in the downlink, and an in-depth study on the performance of outage probability (OP), ergodic capacity and system throughput is performed. For a more comprehensive analysis, hybrid satellite-terrestrial relay networks (HSTRNs) with conventional OMA technology are used in the comparative analysis. Analysis and simulation results show that PDMA-based hybrid satellite-terrestrial relay networks outperform the other system in terms of OP and ergodic capacity. (C) 2022 Published by Elsevier B.V.

Automated summary

This letter investigates the application of PDMA in satellite-terrestrial networks and compares the outage probability, ergodic capacity, and system throughput between PDMA and conventional OMA technologies. The results demonstrate that PDMA-based hybrid satellite-terrestrial relay networks outperform other systems in terms of OP and ergodic capacity.