On the performance of DWT and WPT modulation for multicarrier systems
On the performance of DWT and WPT modulation for multicarrier systems
复制标题
多载波系统的DWT和WPT调制性能
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Y. Dama
中科院分区：
文献类型：
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作者：
O. O. Anoh;N. Ali;R. Abd;S. R. Jones;Y. Dama
离散小波变换(DWT)正被考虑用于多载波调制，如何最好地部署该方案正在进行深入的研究。研究并比较了离散小波变换和小波包变换的性能。由于小波变换采用多分辨率的方式，小波变换比小波变换具有更多的窄带子信道。然而，研究发现，DWT和WPT在AWGN和多径信道上的性能与多载波调制不同。这项工作有助于在研究或设计此类多载波系统时选择基小波族。
The discrete wavelet transform, DWT, is being considered for multicarrier modulation, and intensive investigations are underway on how this scheme can best be deployed. The performance of the DWT and wavelet packet transform (WPT) has been investigated and compared. There are more narrowband sub-channels in WPT than those that exist in DWT owing to the style of multiresolution adopted by the latter. However, it is found that DWT and WPT perform differently as multicarrier modulations over AWGN and multipath channels. This work helps to inform the selection of base-wavelet families when studying or designing a multicarrier system of this kind.