DOA estimation based on blind source separation for DS-CDMA systems
Liu Chen · Chinese Journal of Radio Science · 2005
This paper presents a DOA estimation algorithm for overloaded asynchronous DS-C DMA systems where the number of the multipath components exceeds that of antenna array′s elements. The signal of interested (SOI) is separated first based on t he minimum energy output (MOE) criteria so that the number of multipath componen ts in SOI is less than that of antenna array′s elements. Then, a computation ef fective element-wise division (EWD) algorithm is adopted to resolve DOA′s effi ciently. The algorithm has the advantages of low-complexity and high accuracy. Simulation results confirm the effectiveness of the algorithm.