摘要
将小波包理论与M元扩频技术相结合,提出基于小波包的M元多载波扩频系统可以在有限带宽内取得更高的信息传输速率。同时,由于小波包函数的优良性质,该系统可以很好地克服多径信道对性能的影响。仿真结果表明,与基于DFT的M元多载波扩频系统相比,在多径信道下,该系统有较大的性能优势。
A novel M-ary multicarrier spread spectrum scheme based on wavdet packet is proposed, which can achieve a higher bit transfer rate under the restricted bandwidth condition. The good properties of wavdet packet functions ensure that the new scheme is effective to overcome the influence of multipath channel. The performance advantages of the new scheme over the M-ary multicarrier spread spectrum scheme based on DFT are demonstrated by both study and simulation.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2005年第11期1866-1869,F0003,共5页
Systems Engineering and Electronics
基金
国家自然科学基金资助课题(60172029)
关键词
小波包
多载波扩频
M元
多径信道
wavelet packet
multicarrier spread spectrum
M-ary
multipath channel
