Non-Orthogonal Multiple Access-Based Statistical Signal Transmission Technique

Statistical signal transmission (SST) is one of rising technologies, which can deliver extra data through regulated periodic statistical features of ordinary signals without additional bandwidth cost. Existing SST technologies always work on orthogonal multiple access (OMA)-based systems. Nonetheless, non-orthogonal multiple access (NOMA)-based systems have now become a prevailing trend for future communications; while researches on whether SST can work upon NOMA-based systems is still lacking in literature. Motivated by this circumstance, in this paper we probe into ways of integrating SST and NOMA systems. To accomplish such a target, we successively propose the transceiver architecture, analyze the feasibility, and design a dedicated transmission strategy for NOMA-based SST system. Simulation results demonstrate that SST can work well in NOMA systems. Meanwhile, it is also revealed that detection accuracy in SST domain can be further enhanced under dedicated transmission strategy, while it does not affect detection performance in frequency domain.