TERMINAL CHANNEL ESTIMATION METHOD AND SYSTEM FOR MULTI-SERVICE PARALLEL IN TD-SCDMA SYSTEM

摘要

A terminal channel estimation method for multi-service parallel in a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system is disclosed by the present invention, wherein the method includes: performing initial channel estimation, and obtaining channel estimation values; obtaining relative sizes of each Code Combination Transmission Channel (CCTRCH) power; according to the relative sizes of each CCTRCH power, correcting the tap energy of the channel estimation values, and performing the first channel estimation post processing; according to the result of the first channel estimation post processing, performing the second channel estimation post processing, and obtaining the ultimate effective taps. The present invention also provides a terminal channel estimation system for multi-service parallel in a TD-SCDMA system. Based on the system and method in the present invention, the accuracy of channel estimation can be improved, and thus the demodulation performance of low-power services is enhanced.