A Channel and Carrier Frequency Offset Joint Estimation Algorithm for TD-SCDMA
一种TD-SCDMA载波频偏与信道联合估计算法

An algorithm of channel and carrier frequency offset joint estimation is proposed in this paper with analyzing the characteristic of carrier frequency offset and wireless channel in Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system. Frequency offset and channel parameters can be uncoupled by means of partly correlating the training sequence and calculating difference, then they are estimated accurately through iteration. Simulation results show that the proposed algorithm performs quite well in both frequency offset and channel estimation. The frequency offset estimation performance is closed to Cramér-Rao bound, and the link performance is good. The proposed method has low complexity and strong practicability. It can be used in other Time Division Duplex (TDD) CDMA systems.