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首页> 外文期刊>The mediterranean journal of electronics and communications >DEVELOPMENT OF NEW COMBINATIONAL WINDOW FAMILY WITH ITS APPLICATION IN THE DESIGN OF COSINE MODULATED FILTER BANK WITH BETTER PERFORMANCE
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DEVELOPMENT OF NEW COMBINATIONAL WINDOW FAMILY WITH ITS APPLICATION IN THE DESIGN OF COSINE MODULATED FILTER BANK WITH BETTER PERFORMANCE

机译：新的组合窗口系列的开发及其在性能更好的余弦调制滤池设计中的应用

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摘要

This paper presents the design of near perfect reconstruction (NPR) cosine modulated filter bank (CMFB). The prototype filter is designed by the combinational window functions. Three other variable windows, viz., Kaiser window, Papoulis-cos~4 (πt) window, Parzen-cos~6 (πt) window are also used to design prototype filters. These window functions provide high side-lobe-fall-off-rate (SLFOR) with better far-end attenuation which suppresses the undesired interferences occur in the filter bank. The Gradient based iterative optimization algorithm is used to minimize the error parameters. Design examples have been included to illustrate the effectiveness of the proposed technique over the earlier reported work. This study reveals that in case of 8 channels cosine modulated Quadrature Mirror Filter (CMQMF), (he proposed window provides better peak reconstruction error and far-end attenuation while in case of 16 & 32 channels CMQMF, it provides better peak reconstruction error, stop band energy and far- end attenuation.
机译：本文介绍了近完美重构（NPR）余弦调制滤波器组（CMFB）的设计。原型过滤器是通过组合窗口函数设计的。其他三个可变窗口，即Kaiser窗口，Papoulis-cos〜4（πt）窗口，Parzen-cos〜6（πt）窗口也用于设计原型过滤器。这些窗口功能提供了较高的旁瓣下降率（SLFOR），并具有更好的远端衰减，从而抑制了在滤波器组中发生的不良干扰。基于梯度的迭代优化算法用于最小化误差参数。设计实例已经包括在内，以说明所提出的技术在早期报道的工作中的有效性。这项研究表明，在8通道余弦调制正交镜像滤波器（CMQMF）的情况下（他提出的窗口提供了更好的峰值重构误差和远端衰减，而在16和32通道CMQMF的情况下，它提供了更好的峰值重构误差，停止了频带能量和远端衰减。

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