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Design of NPR-Type Cosine Modulated Filterbank Using Combinational Window Functions
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International Journal of Communications, Network and System Sciences·Volume 03 (2010)·Pages 934–942·Published 27 December 2010·DOI10.4236/ijcns.2010.312127
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Abstract
This paper presents the design of near perfect reconstruction (NPR) cosine modulated filterbank (CMFB). The prototype filter is designed by the combinational window functions. These window functions provide high side-lobe-fall-off-rate (SLFOR) with better far-end attenuation which suppresses the undesired inter-ferences occur in the filterbank. A linear optimization is used to minimize the error parameters. Design ex-amples have been included to illustrate the effectiveness of the proposed technique over the earlier reported work.
KeywordsCombinational Window FunctionsSLFORFar-End AttenuationStopband Energy
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