TD-SCDMA中利用空时处理改善系统性能的算法设计与仿真分析

TD-SCDMA系统中采用级联的智能天线和联合检测算法实现时间和空间的分步处理,本文设计了一种集成的智能天线和联合检测算法实现时间和空间的联合处理,不仅保持了两者各自的优点,又使两者成为一个相对独立的算法,充分发挥联合优势,以此进一步改善TD-SCDMA系统性能,给出了两种处理方式在相同环境下仿真得到的系统BER曲线,并对联合处理算法复杂度进行了分析,为该算法在实际系统中应用的可行性提供了一个参考。

Construction and Simulation of Algorithm to Improve System Performance with Space-Time Processing in TD-SCDMA

The dissociative processing of time and space used in TD-SCDMA system by the algorithm of smart antenna and joint detection in series. An algorithm based on the integrated processing of space-time realized by the combination of smart antenna and joint detection is designed, which not only reserves the merits of the two techniques, but also makes the better performance of TD-SCDMA system. At last, the BER curves of system obtained by the simulation of the two processing methods in the same condition are presented and the complexity of the union algorithm is analyzed, which proposed a reference to the feasibility of this algorithm.