Robust M-estimation for multipath CDMA communication systems with phased array receiver

The problem of estimating information symbols transmitted through nonGaussian multipath CDMA wireless channels with a phased array is considered. First, we propose a new robust estimator based on the Huber´s minimax robust estimation theory. A strong advantage of the proposed robust algorithm is a decreased sensitivity of the estimates with respect to an actually unknown distribution of random noises and interferences. Then, we analyze the estimation accuracy of DOA and information signals by Monte Carlo simulation of this robust algorithm in multipath scenario.