Delay Optimal Non-Orthogonal Multiple Access with Joint Scheduling and Superposition Coding

As an emergency requirement of Quality of Service (QoS), low latency can be efficiently provided by a cross-layer scheduling. In particular, we consider a pair of Non-Orthogonal Multiple Access (NOMA) users with a random packet arrival over a block fading channel. A probabilistic cross-layer approach is considered to jointly determine the scheduling and superposition coding process, based on the buffer and channel state information. The joint...