Combining NOMA-OMA with a Multiagent Architeture for Enhanced Spectrum Sharing in 6G.

Current multiple access technologies, Orthogonal Multiple Access (OMA) and Non-Orthogonal Multiple Access (NOMA) alone cannot satisfy 6G requirements and provide the connectivity to future networks. Hence, in this work, we propose an Adaptive NOMA-OMA (A-NOMA) that can benefit from interchanging multiple access technologies enhancing the Spectral Efficiency (SE). To turn feasible the interchange of transmission techniques, we model a spectrum sharing problem to exploiting the OMA-NOMA trade-off. We propose an architecture to the total spectral efficiency. Simulations resulted on an enhanced SE and provided more than 20% compared to NOMA SE and over 50% with OMA SE.