机构地区: 太原理工大学信息工程学院信息与通信工程系
出 处: 《太原理工大学学报》 2006年第3期260-263,共4页
摘 要: 研究了多载波码分多址(MC-CDMA)系统,用收敛性能良好的递归最小二乘(RLS)算法将MC-CDMA与传统CDMA中的信干比(SIR)和误码率(BER)等多用户检测性能进行了比较。动态仿真表明:多径信道中,MC-CDMA不仅具有较高的SIR,而且具有良好的跟踪性能,在信噪比为6 dB时,其系统误码率就达到了正常通话指标要求,而传统CDMA系统BER性能不佳。从而得出了MC-CDMA比传统CDMA更适合于低信噪比、高速率移动通信的结论。 This paper studied the structure of MC-CDMA, using the RLS algorithm which has good convergence character to compare Multi-user Detection Performances including SIR and BER between MC-CDMA and traditional CDMA. The dynamic simulations show: MGCDMA has not only high SIR but also good tracking ability in multiple paths;when SNR is 6dB , the BER of MC-CDMA reached the standard of normal communication, while the BER of traditional CDMA is bad. Then we conclude that MC-CDMA is more suitable for low SNR and high data rate mobile communication than traditional CDMA.