On a modified structure for cosine-modulated filter banks using the frequency-response masking approach

被引：2
|
作者：
de Barcellos, LCR [1 ]
Diniz, PSR [1 ]
Netto, SL [1 ]
机构：
[1] UFRJ, COPPE, DEL Poli, Programa Engn Elect, BR-21941972 Rio De Janeiro, RJ, Brazil
来源：
2005 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), VOLS 1-6, CONFERENCE PROCEEDINGS | 2005年
关键词：
D O I：
10.1109/ISCAS.2005.1465584
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, we propose a cosine-modulated filter bank (CMFB) design using the frequency-response masking (FRM) approach in which the interpolation factor L of the base filter is approximately an even-multiple of the number M of subbands. In such a case, a realizable maximally-decimated structure requires a large computational complexity for the filter bank. Instead, we employ an over-sample FRM-CMFB structure to address the problem, and combine adjacent subbands to achieve the desired number of bands in the original design. The result is an FRM-CMFB structure with reduced computational complexity.
引用
收藏
页码：4309 / 4312
页数：4
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