On the Application of Raised-Cosine Wavelets for Multicarrier Systems Design
On the Application of Raised-Cosine Wavelets for Multicarrier Systems Design
复制标题
升余弦小波在多载波系统设计中的应用
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
S. R. Jones
中科院分区：
文献类型：
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作者：
K. Anoh;T. T. Mapoka;R. Abd;O. Ochonogor;S. R. Jones
新的正交小波变换可以通过改变小波基函数或构造新的低通滤波器（LPF）来设计。在使用中，一个小波族可能比另一个小波族更适合于特定的应用。在这项研究中，基于升余弦谱的小波变换被用作一个独立的正交小波来研究多载波调制在多径信道环境下的行为。然后，升余弦小波与其他著名的正交小波，也用于建立多载波调制系统进行了比较。传统的正交小波没有旁瓣，而升余弦小波有很多旁瓣，这些特性影响了小波的性能。它将被证明，升余弦小波变换，作为一个正交小波，不支持多载波应用的设计以及现有的公知的正交小波。
New orthogonal wavelet transforms can be designed by changing the wavelet basis functions or by constructing new low-pass filters (LPF). One family of wavelet may appeal, in use, to a particular application than another. In this study, the wavelet transform based on raised-cosine spectrum is used as an independent orthogonal wavelet to study multicarrier modulation behaviour over multipath channel environment. Then, the raised-cosine wavelet is compared with other well-known orthogonal wavelets that are used, also, to build multicarrier modulation systems. Traditional orthogonal wavelets do not have side-lobes, while the raised-cosine wavelets have lots of side-lobes; these characteristics influence the wavelet behaviour. It will be shown that the raised-cosine wavelet transform, as an orthogonal wavelet, does not support the design of multicarrier application well like the existing well-known orthogonal wavelets.