A Low-Cost, Low-Complexity, and Memory-Free Architecture of Novel Recursive DFT and IDFT Algorithms for DTMF Application

被引:10
作者
Lai, Shin-Chi [1 ]
Lei, Sheau-Fang [1 ]
Juang, Wen-Ho [1 ]
Luo, Ching-Hsing [1 ]
机构
[1] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 701, Taiwan
关键词
Discrete Fourier transform (DFT); dual-tone multifrequency (DTMF); recursive filters; DISCRETE COSINE TRANSFORM; LOW-COMPUTATION-CYCLE; POWER-EFFICIENT; DESIGN; IMPLEMENTATION;
D O I
10.1109/TCSII.2010.2056413
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
A low-computational complexity and low-cost recursive discrete Fourier transform (RDFT) design using the Chinese remainder theorem is proposed in this brief. The proposed algorithm reduces multiplications by 74% and additions by 73% compared to the latest RDFT algorithms. For computing the 212- and 106-point DFT coefficients, the proposed design can shorten computing cycles by 47% compared with the latest architectures. The hardware resources for the proposed design only require 2 multipliers and 12 adders. The coefficient read-only memory storing the sine and cosine values can be reduced by 100% compared with other recursive algorithms. Therefore, the proposed algorithm is more suitable than other very large scale integration realizations.
引用
收藏
页码:711 / 715
页数:5
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