The D-OMA Method for Massive Multiple Access in 6G: Performance, Security, and Challenges

In this article, we introduce a new multiple-access method, delta-orthogonal multiple access (D-OMA), for massive access in future 6G cellular networks. D-OMA is based on the concept of distributed large coordinated multipoint (CoMP) transmission-enabled nonorthogonal multiple access (NOMA) using partially overlapping subbands for NOMA clusters. We demonstrate the performance of this scheme in terms of outage capacity for different degrees of...