Abstract: In this paper, an effective DOA estimation algorithm is presented for DS-CDMA systems under multi-user environment. First, the information associated with each path is extracted. Then, DOA's are efficiently resolved using the proposed element-wise division operations. The algorithm requires neither complex eigenvalue decomposition operations nor source number estimation. In addition, paths pairing are matched automatically. Generally speaking, the proposed algorithm is high in resolution and easy to implement in practice. Simulations confirm the effectiveness of the algorithm.

Key words: smart antenna, space-time processing, direction of arrival (DOA)