摘要
首先比较基于 3种小波调制的多载波技术的优劣 ,小波包调制 (WPM)无论在多速率分配还是在抗干扰方面都要优于多尺度调制 (MSM)和M频带小波调制 (MWM)。然后 ,引入双正交小波作为子载波的基函数 ,仿真它在AWGN信道和平坦瑞利落信道下的性能并对结果进行分析 。
Multicarrier modulation techniques, including OFDM and OWPDM are among the promising techniques. Through comparing three kinds of wavelet based multicarrier techniques,it is found that WPM is more eminent than MSM and MWM.Then bi-orthogonal wavelet is introduced as subcarrier basis functions. The performance of the system is simulated and analyzed on the AWGN and flat Rayleigh channel. The introduction of the bi-orthogonal wavelet is the most important step toward practical implementation.
出处
《电讯技术》
北大核心
2002年第2期14-17,共4页
Telecommunication Engineering
关键词
小波包
多载波技术
无线通信
Mobile communication
OFDM
Wavelet packet
Multicarrier
