Large-Scale SIMO Systems Based on Specular Component in Correlated Rician Fading Environments

In correlated Rician flat fading environments, we consider a single input multiple output (SIMO) system with a large-scale antenna array. We assume that the receiver only knows the channel information related to the specular component and treat the Rayleigh fading component as interference. We first present a maximum-ratio-combining (MRC) -like detection scheme only based on the specular component, and in order to analyze the reliability performance, derive receive signal to interference plus noise ratio (SINR) expressions for scenarios without and with receive spacialcorrelation. Then we extend the above SINR analysis to the scenario over frequency-selective channels as well as the one in the presence of co-channel interference. Finally, we provide some numerical results to validate the theoretical results, and show by simulation results that different from the conventional view, the strong spatial correlation can provide better reliability performance than the weak one.