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Implementation of N-Bit Binary Multiplication Using N - 1 Bit Multiplication Based on nikhilam sutra and Karatsuba Principles Using Complement Method

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Circuits and Systems 2016年第9期7卷 2332-2338页

作者： M. Nisha Angeline S. Valarmathy Department of ECE Velalar College of Engineering and Technology Erode India Department of ECE Bannari Amman Institute of Technology Sathyamangalam Indi

This paper is designed to introduce new hybrid Vedic algorithm to increase the speed of the multiplier. This work combines the principles of nikhilam sutra and Karatsuba algorithm. Vedic Mathematics is the mathematical system to solve the complex computations in an easier manner. There are specific sutras to perform multiplication. nikhilam sutra is one of the sutra. But this has some limitations. To overcome the limitations, this sutra is combined with Karatsuba algorithm. High speed devices are required for high speed applications with compact size. Normally multipliers require more power for its computation. In this paper, new multiplication algorithm for the multiplication of binary numbers is proposed based on Vedic Mathematics. The novel portion in the algorithm is found to be in the calculation of remainder using complement method. The size of the remainder is always set as N - 1 bit for any combination of input. The multiplier structure is designed based on Karatsuba algorithm. Therefore, N × N bit multiplication is done by (N - 1) bit multiplication. Numerical strength reduction is done through Karatsuba algorithm. The results show that the reduction in hardware leads to reduction in the delay.

关键词： nikhilam sutra Numerical Strength Reduction Karatsuba Vedic Multiplier Weight Reduction

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Design of an Efficient Binary Vedic Multiplier for High Speed Applications Using Vedic Mathematics with Bit Reduction Technique

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Circuits and Systems 2016年第9期7卷 2593-2602页

作者： S. K. Manikandan C. Palanisamy Department of EEE Velalar College of Engineering and Technology Erode India Department of Information Technology Bannari Amman Institute of Technology Sathyamangalam India

Vedic mathematics is the system of mathematics followed in ancient Indian and it is applied in various mathematical branches. The word “Vedic” represents the storehouse of all knowledge. Because using Vedic Mathematics, the arithmetical problems are solved easily. The mathematical algorithms are formed from 16 sutras and 13 up-sutras. But there are some limitations in each sutra. Here, two sutras nikhilam sutra and Karatsuba algorithm are considered. In this research paper, a novel algorithm for binary multiplication based on Vedic mathematics is designed using bit reduction technique. Though nikhilam sutra is used for multiplication, it is not used in all applications. Because it is special in multiplication. The remainder is derived from this sutra by reducing the remainder bit size to N-2 bit. Here, the number of bits of the remainder is constantly maintained as N-2 bits. By using Karatsuba algorithm, the overall structure of the multiplier is designed. Unlike the conventional Karatsuba algorithm, the proposed algorithm requires only one multiplier with N-2 bits only. The speed of the proposed algorithm is improved with balancing the area and the power. Even though there is a deviation in lower order bits, this method shows larger difference in higher bit lengths.

关键词： Karatsuba nikhilam sutra Bit Reduction Remainder Multipliers

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