WCDMA系统基站阵列接收方案带训练序列的LMS-DRMTA算法

THE RECEPTION SCHEME AT BASE STATION FOR WCDMA SYSTEM LMS-DRMTA ALGORITHM WITH TRAINING SEQUENCE

该文针对WCMA系统上行链路帧结构的特征,将Z.Rong(1997)提出的LS-DRMTA改进为利用WCDMA上行链路帧结构中的导频位(pilot bit)作为训练序列的LMS-DRMTA算法。这种新的阵列接收CDMA解调算法相对于LS-DRMTA算法大大降低了基站处理的运算量,提高了算法的实用性,仿真实验还表明该算法比原算法具有更低的误码率。

In accordance with the uplink frame structure of WCDMA system, this paper develops the LS-DRMTA algorithm proposed by Z. Rong, et al.(1997) into a new algorithm named LMS-DRMTA with training sequence. The use of training sequence does not complicate the application of the new algorithm in WCDMA system because the existed pilot bits in each WCDMA frame slot act as the the training sequence for the new algorithm. The proposed algorithm cuts down lots of computational complexity of LS-DRMTA algorithm which simplifies its application in WCDMA system. Furthermore, the simulation experiments indicate that the new algorithm can perform much lower BER than LS-DRMTA.