Design of High-Speed Desensitized FIR Filter Employing Reduced Complexity SQRT Carry Select Adder
K. Manivannan1, L. Lakshminarasimman2, M. Janaki Rani3

1K. Manivannan, Research Scholar, Department of Electrical Engineering, Annamalai University, Chidambaram, India.
2L. Lakshminarasimman, Associate Professor, Department of Electrical Engineering, Annamalai University, Chidambaram, India.
3M. Janaki Rani, Professor, Department of Electronics and Communication Engineering, Dr. M.G.R. Educational and Research Institute, Chennai, India.

Manuscript received on 01 August 2019 | Revised Manuscript received on 05 August 2019 | Manuscript published on 30 August 2019 | PP: 4288-4296 | Volume-8 Issue-10, August 2019 | Retrieval Number: J1063088101919©BEIESP | DOI: 10.35940/ijitee.J1063.0881019
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Abstract: In this research, a highly efficient desensitized FIR filter is designed to enhance the performance of digital filtering operation. With regard to FIR filter design, Multiplication and Accumulation component (MAC) forms the core processing entity. Half-band filters employing Ripple Carry Adder (RCA) based MAC structures have a sizeable number of logical elements, leading to high delay and high power consumption. To minimize these issues, a modified Booth multiplier encompassing SQRT Carry Select Adder (CSLA) based MAC component is proposed for the desensitized filter with reduced coefficients and employing lesser number of logical elements forgiving optimum performance with respect to delay and power consumption. The suggested FIR filter is simulated and assessed using EDA simulation tools from Modelsim 6.3c and Xilinx ISE. The results obtained from the proposed Desensitized FIR filter employing the modified booth multiplier with reduced complexity based SQRT CSLA show encouraging signs with respect to 12.08% reduction in delay and 2.2% reduction in power consumption when compared with traditional RCA based digital FIR filter.
Keywords: MAC, SQRT CSA, RCA, Desensitized FIR Filter, Half Band Filter.

Scope of the Article: High Speed Networks