Link performance of TD-SCDMA systems

In this paper, we start with the architecture in TD-SCDMA, and outline the main aspects of its important algorithms, including channel estimation, joint detection, and smart antenna. Our emphases are put on a new efficient channel estimation algorithm which brings performance near that brought by ideal channel estimation and the fast algorithms of JD which greatly reduce the computational complexity. Finally, computer simulations by COSSAP are presented to evaluate the link level performance of the TD-SCDMA system under various multipath Rayleigh fading channel environments. 12.2 kbit/s data service is mainly adopted. The numerical results show that our schemes can bring more accurate channel estimation, lower computational complexity, which benefit the efficiency of the TD-SCDMA systems.