A low-power and high-quality implementation of the discrete cosine transformation

被引：7
作者：
Heyne, B. [1 ]
Goetze, J. [1 ]
机构：
[1] Univ Dortmund, Informat Proc Lab, Otto Hahn Str 4, D-44227 Dortmund, Germany
来源：
ADVANCES IN RADIO SCIENCE | 2007年 / 5卷
关键词：
D O I：
10.5194/ars-5-305-2007
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 a computationally efficient and high quality preserving DCT architecture is presented. It is obtained by optimizing the Loeffler DCT based on the Cordic algorithm. The computational complexity is reduced from 11 multiply and 29 add operations (Loeffler DCT) to 38 add and 16 shift operations (which is similar to the complexity of the binDCT). The experimental results show that the proposed DCT algorithm not only reduces the computational complexity significantly, but also retains the good transformation quality of the Loeffler DCT. Therefore, the proposed Cordic based Loeffler DCT is especially suited for low-power and high-quality CODECs in battery-based systems.
引用
收藏
页码：305 / 311
页数：7
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