Precoder Design in Statistical CSI Aided Non-Orthogonal Multiple Access
In this paper, the ergodic sum rate maximization problem is considered in the multiple-input single-output non-orthogonal multiple access (NOMA) system with statistical channel state information at the transmitter.First, we derive the analytic expression of the ergodic sum rate Planer Belt with given arbitrary precoders.Then, due to the non-convexi