Performance evaluation of SIMO Least Squares channel tracking on Rician distributed channel

Abstract

Wireless channel with the presence of Line of Sight (LOS) is often modeled as Rician distribution. In order to track the channel for mobile users, exponentially weighted Least Squares (LS) Single Input Multiple Output (SIMO) channel estimation is employed. By incorporating the optimum forgetting, the system performance in terms of tracking Mean Square Error (MSE) and Bit Error Rate (BER) is evaluated. It is shown that the optimum forgetting factor as well as the system performance, are elevation angle-dependent due to the rapid movement of the user in the coverage area.