Multi-user DOA estimation in multi-paths for cellular CDMA
Yang Zhengquan · jOURNAL OF southwest University for Nationalities · 2007
In smart antenna system for cellular CDMA,one of key technologies that can implement space-division multiple-access(SDMA) via improving system capacity and performance is direction-of-arrival(DOA) estimation.In this paper,based on pseudo-random code,a sub-spatial smoothing ESPRIT algorithm that needn’t store many data but only decompose two matrixes is proposed to improve system performance.In theory,this algorithm can estimate DOA of arbitrary users with different pseudo-random code in multi-path.Computer simulations demonstrate the validity of the algorithm.