基于余弦调制滤波器组的多载波CDMA系统  

MC - CDMA system based on CMFB

作　　者：刘梅[1] 许荣庆[1] 杨太星[1] 栾少华[1] 张馨[2] 

机构地区：[1]哈尔滨工业大学电子工程研究所,黑龙江哈尔滨150001 [2]哈尔滨工业大学通信工程研究所,黑龙江哈尔滨150001

出　　处：《哈尔滨工业大学学报》2004年第3期410-413,416,共5页Journal of Harbin Institute of Technology

基　　金：哈尔滨工业大学科学技术基金资助项目(HIT.2003.09).

摘　　要：通过分析M带滤波器组和M带复用转换器的完全重构条件,用最优等波纹法设计了一个旁瓣约为45 dB的M带余弦调制滤波器组.用改造的综合滤波器组进行调制、分析滤波器组进行解调.构建了基于余弦调制滤波器组的多载波CDMA系统.研究了基于余弦调制滤波器组的多载波调制的快速算法,分析了算法复杂度.仿真结果表明,CMFB-CDMA系统可以得到比传统的基于OFDM的多载波CDMA系统更好的性能.An M-band CMFB with a side lobe of about 45 dB was designed using the optimum equal wave method. Modulation was made with the updated comprehensive filter banks, and demodulation was made with the analytic filter banks, and a multi-carrier CDMA system based on CMFB was constructed. The perfect reconstruction condition of M-band filter banks and M-band transmultiplexer provides a multi-carrier modulation method based on the M-band filter banks. A fast arithmetic of the multi-carrier modulation based on CMFB and the complement of the arithmetic was given. Simulation results indicate that MC-CDMA based on CMFB is better than OFDM MC-CDMA.

关 键 词：余弦调制滤波器组 多载波CDMA 复用转换器 最优等波纹法 

分 类 号：TN929.533[电子电信—通信与信息系统] TN713[电子电信—信息与通信工程]