Performance comparison of EV-t and MUSIC for two-dimensional code acquisition

Abstract

In this paper, an efficient method is proposed for joint time delay and direction-of-arrival (DOA) estimation, called two-dimensional code acquisition here, in direct-sequence code division multiple access (DS-CDMA) systems. Meanwhile, we present a rigorous statistical analysis for this method. Through performance comparison with traditional MUSIC, we see the proposed method is robust in highly correlated and coherent multi-path propagation environment. It is effective against channel interferences, and its performance increases with the length of the space-time response vector.