Abhijit Chandra

Work place: Department of Electronics & Telecommunication Engineering Bengal Engineering and Science University, Shibpur Howrah, India

E-mail: abhijit922@yahoo.co.in


Research Interests: Evolutionary Computation, Coding Theory, Cryptographic Coding


Abhijit Chandra is presently associated with the Department of Electronics and Telecommunication Engineering of Bengal Engineering and Science University, Shibpur, Howrah-711103, India as an Assistant Professor. He has received his B.E. in Electronics and Telecommunication Engineering in 2008 from Bengal Engineering and Science University, Shibpur, Howrah-711103, India and M.E.Tel.E in 2010 from Jadavpur University, Kolkata-700032, India. He has published a number of papers in International/National Conferences and Journals of good repute. He had been awarded with President’s Gold Medal from Bengal Engineering and Science University, Shibpur and University Medal from Jadavpur University for being first in the faculty of Engineering and Technology in B.E. and M.E. examinations respectively. His research area includes Digital Communication, Digital Signal Processing, Evolutionary Computation and Coding Theory.

Author Articles
Design and Implementation of a Power Efficient Pulse-shaping Finite Impulse Response Filter on a Field Programmable Gate Array Chip

By Puja Kumari Rajeev Gupta Abhijit Chandra

DOI: https://doi.org/10.5815/ijigsp.2012.04.01, Pub. Date: 8 May 2012

This paper presents one novel algorithm for minimization of non-zero coefficients of Finite Impulse response (FIR) pulse-shaping filter, mostly employed in practical digital communication system to alleviate the difficulties resulting from Inter Symbol Interference (ISI), followed by its hardware optimization on a Field Programmable Gate Array (FPGA) chip . Filter performance has been demonstrated through the inclusion of impulse response, magnitude spectrum and requirement of various hardware blocks. The supremacy of our algorithm has been substantiated by comparing its performance with other existing models of different length. From the simulation results, it has been concluded that the proposed FIR filter provides a considerable reduction in the number of non-zero coefficients without affecting its performance significantly.

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Novel Approach of Designing Multiplier-less Finite Impulse Response Filter using Differential Evolution Algorithm

By Abhijit Chandra Sudipta Chattopadhyay

DOI: https://doi.org/10.5815/ijisa.2012.04.08, Pub. Date: 8 Apr. 2012

Reduction of computational complexity of digital hardware has drawn the special attention of researchers in recent past. Proper emphasis is needed in this regard towards the settlement of computationally efficient as well as functionally competent design of digital systems. In this communication, we have made one novel attempt for designing multiplier-free Finite duration Impulse Response (FIR) digital filter using one robust evolutionary optimization technique, called Differential Evolution (DE). The search has been directed through two sequentially opposite paths which include quantization and optimization as fundamental operations. Besides performing a detailed comparative analysis between these two proposed approaches; the performance evaluation of the designed filter with other existing discrete coefficient FIR models has also been carried out. Finally, the optimum search method for realizing the required set of specifications has been suggested.

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