Review for TD-SCDMA System

In this review paper, we analyze the performance of Channel estimation problem for TD-SCDMA System. The conventional channel estimation algorithm currently used in the TD-SCDMA system. Parallel interference cancellation (PIC) channel estimation algorithm by simultaneously eliminating the interference of adjacent cells and improve the accuracy of channel estimation. Accurate information of channel impulsive response (CIR) is the key to performance of receivers. Successive interference cancellation (SIC), this channel algorithm is also used for Time Division Synchronization Code Division Multiple Access Systems (TDSCDMA). TD-SCDMA is the country's standard of 3G mobile telecommunication. This reduces the number of users in each timeslot, which reduces the implementation complexity of multiuser detection and beam forming schemes, but the non-continuous transmission also reduces coverage (because of the higher peak power needed), mobility (because of lower power control frequency) and complicates radio algorithms. In different interference cancellation (IC) schemes is also exist for multiuser detection (MUD) or spatial multiplexing (SM) problems.