Adaptive Multiplexing Order Selection For Single-carrier MIMO Transmission

Abstract— Spatial multiplexing and diversity are in a tradeoff relationship. Multiple-input multiple-output (MIMO) can increase the maximum throughput in a good propagation environment by selecting high multiplexing order, but the achievable throughput degrades in a poor propagation environment. By adaptively selecting the multiplexing order according to the changing propagation environment, the achievable throughput can always be maximized. In this paper, we consider single-carrier (SC)-MIMO with frequency-domain equalization (FDE) and propose an adaptive multiplexing order selection suitable for the cyclic delay pilot channel estimation (CDP-CE). The throughput performance achievable with the SC-MIMO adaptive multiplexing order selection in a multi-cell environment is evaluated by computer simulation.