Study And Implementation Of The Algorithms Of Channel Estimation And Multiuser Detection In TD-SCDMA

With the development of the third generation mobile radio systems, code division multiple access (CDMA) is again under discussion. And the multiuser detection (MUD) technology is a hot point in the research of CDMA system. In the present paper ,flrstly ,the current development of the third systems and chinese TD-SCDMA system proposal are introduced briefly. Secondly, some common method of multiuser detection technology and channel estimation (CHE) are deeply researched, based on the matrix-vector notation of the discrete time transmission model of synchronous CDMA and the proposal of the TD-SCDMA system. Thirdly, the baseband digital signal processing l~echnology combining the smart antenna and JO is analyzed in detail. To facilitate actual implementation , the signal processing complexity of these approaches is characterized. Some fast algorithms is proposed. Lastly, the performance of uplink of TD-SCDMA system is analyzed according to simulation results. Some conclusions and further research are presented.