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Liyuan Sheng

Work place: School of Physics Science and Technology/Central South University, Changsha, China

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Research Interests: Information-Theoretic Security, Information Security, Computer Science & Information Technology

Biography

Liyuan Sheng was born in P.R. China in 1956, earned B.S. degree in the field of mathematics in 1981.Earned master of engineering in 1988.
He is now a professor in C entral South University, Changsha. China. In Recent years, he has published more than 30 papers in the area of Computer Science and Signal Processing. A t present, he takes part in m any research projects in area of information security supported by National Nature Science Foundation of China under Grant No. 60672041.
Professor Sheng Liyuan is also the secretary-general and Standing director of Hunan Instruments Manufactures Association.

Author Articles
A New Adder Theory Based on Half Adder and Implementation in CMOS Gates

By Zhanfeng Zhang Liyuan Sheng Wenming Jiang Shuai Tong Hua Cao

DOI: https://doi.org/10.5815/ijigsp.2010.02.02, Pub. Date: 8 Dec. 2010

This paper proposes a new theory of adder and its basic structure. The new adder of asynchronous structure constructed by half adders, called Parallel Feedback Carry Adder (PFCA) as its carry mode is parallel feedback. In theory, the area consumption of n-bit PFCA is close to O(n) and the average length of carry chain is O(log n). A CMOS gate implementation scheme is implemented. HSPICE simulation results show that PFCA has obvious advantages over RCA, CLA, CSeA in speed and area, especially when n is bigger.

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