摘要
从2带滤波器组的完全重构条件入手,研究了基于小波包变换的多载波调制,给出了快速算法,并构建了基于小波包变换的多载波CDMA系统,对系统性能进行了模拟仿真。结果表明,当选择性能优良的小波包时,基于小波包变换的多载波CDMA系统性能要优于传统的基于OFDM的多载波CDMA系统。
A 2-band filter banks' perfect reconstruction condition is presented, a multicarrier modulation based on the wavelet packet is provided for a fast arithmetic. A MC - CDMA system based on the wavelet packet was designed, and the capability of the system was simulated. The results indicate that when the optimal wavelet packet is seleuted, the MC - CDMA based on the wavelet packet is better than the OFDM MC -CDMA.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2004年第2期215-217,222,共4页
Journal of Harbin Institute of Technology
基金
哈尔滨工业大学校科学技术基金(HIT.2003.09).
