摘要
OFDM-CDMA是将OFDM与CDMA相结合的综合技术,是继第三代移动通信之后移动通信技术中的新热点。本文阐述了其基本原理,建立了其中一种性能较好的结合方案,即MC-CDMA系统的仿真模型。在该系统模型下,做了用三种不同的扩频序列m序列、Gold序列、Kasami小集合序列进行扩频调制下的系统仿真性能分析,分别给出误码率曲线并进行对比,得出了较理想的结论。
OFDM-CDMA is the combination of OFDM and CDMA technologies, and it will be a focus after 3G in the field of mobile communication technology. In this article the basic principle of OFDM-CDMA is illuminated. Then the system simulation model of MC-CDMA is set up, which is a better scheme. The performances of the above system modulated by three types of PN sequences(m, Gold, small Kasami sequence) are analyzed, and the BER curves are given and compared. The conclusion is satisfactory.
出处
《系统仿真学报》
CAS
CSCD
2002年第10期1296-1298,1320,共4页
Journal of System Simulation
