DS-CDMA;  DOA;  MUSIC algorithm

In the DS-CDMA system, the formation of the smart antenna pattern must rely on the estimation of the arrival direction of the mobile station. In order to accurately estimate the incoming wave direction, the traditional algorithms for DOA estimation of DS-CDMA systems: MUSIC algorithm and ESPRIT algorithm are analyzed and studied. These two algorithms are based on subspace decomposition, which is computationally intensive and not easy to implement in real time. Two improved algorithms based on MUSIC algorithm and ESPRIT algorithm are proposed for DOA estimation, which greatly reduces the amount of computation. Simulation experiments show that the two improved algorithms are easy to implement in real time in the multipath signal environment of CDMA system.