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A NOVEL ALGORITHM FOR COMMON SUBEXPRESSION ELIMINATION IN VLSI IMPLEMENTATION OF HIGHSPEED MULTIPLIERLESS FIR FILTERS1

孙义和Qiuzhong Wu Yihe Sun

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摘要/描述

In this paper, a novel algorithm called logic depth oriented (LDO) common subexpression elimination (CSE) is proposed. In order to avoid the increase of logic depth in circuit structure that may be caused by the application of some other CSE techniques, the process of common subexpressions eliminating of this algorithm is logic depth oriented and the realization of logic operators reuse will not lead to the increase of logic depth. A complete description of the LDO algorithm and the comparisons with several popular CSE algorithms are presented in this paper. Results of comparisons show that using this algorithm can realize the logic operators reuse efficiently, while the logic depth in circuit structure will maintain optimal. Application of this method in the multiplierless VLSI implementation of high-speed FIR filters or some other multiple constant multiplication (MCM) problems will contribute to the high performances in several aspects such as area, speed and power dissipation.

【免责声明】以下全部内容由[孙义和]上传于[2005年03月29日 23时15分49秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。

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