A Study on the Covariance Matrix Correction of Correlation Signal for Correct Direction Estimation in Phase Mismatch

摘要

In this paper, the direction of arrival of the desired target is estimated from the correlation channel. In wireless communication, it is very important technology to estimate the desired signal due to interference in the multipath. In order to remove the interference signal, a desired signal can be estimated by using the weight of the covariance matrix. Adaptive array antennas are applied to the receiving system to update the weights of the arrival direction algorithms to estimate the desired directions. The weights update uses a covariance matrix of covariance with modified covariance matrix. We obtain the correction covariance matrix using the signal phase mismatch and apply the correction covariance matrix to the arrival direction algorithm to estimate the target direction. Through simulation, we compare and analyze the performance of the proposed algorithm and the existing MUSIC algorithm. We analyze performance of correlation channel and uncorrelated channel, and proved that the proposed algorithm in correlation channel is superior to existing algorithm.