Improved DOA Estimation Algorithm with Sensor Array Perturbations for CDMA System

摘要

An improved direction of arrival (DOA) estimation algorithm with sensor gain and phase uncertainties for synchronous code division multiple access (CDMA) system with decorrelator is presented. Through decorre-lating processing DOAs of the desired users can be estimated independently and all other resolved signal interferences are eliminated. Emphasis is directed to applications in which sensor gain and phase are perturbed that often happen actually. It is shown that improved DOA estimation can be achieved for decoupled signals by gain and phase pre-estimation procedures.