一种改进的MIMO MC-CDMA系统的训练序列设计

摘要

MIMO和MC-CDMA技术相结合,能够提高传统MC-CDMA系统的性能.在分析MC-CDMA系统中不同信道估计方法的基础上,提出一种改进的基于训练序列的MIMO MC-CDMA信道估计方法,能够使发射天线个数成倍增加,而不仅仅受限于子载波个数与多径数目之比,并设计合理的训练序列,大大降低了计算的复杂度.%Combining MIMO technique with MC-CDMA scheme can enhance system performance of conventional MC-CDMA.Based on the analysis of different channel estimations, this paper proposes an improved MIMO MC-CDMA channel estimation method which is based on training sequence.It can multiply the number of transmitting antenna but not be restricted by the ratio of the number of sub-carriers and of multi-paths, and design a reasonable training sequence, which reduces greatly the computation complexity.