Indian Institute of Information Technology KottayamR04Research Domain · Low-Power Silicon Arithmetic
Research on approximate multipliers, compressors, logarithmic/POSIT arithmetic, and energy-efficient error-resilient VLSI circuits at I²CS Lab, IIIT Kottayam.
Approximate Computing exploits the inherent error resilience of machine learning, multimedia, image processing, and wireless communication workloads to trade minimal numerical accuracy for substantial reductions in silicon area, critical-path delay, and switching power.
At I²CS Research Lab, IIIT Kottayam, we design novel approximate 4:2 compressors, Booth and Mitchell logarithmic multipliers, speculative adders, and precision-configurable MAC units—validated both in industry CMOS standard-cell libraries (Synopsys/Cadence) and inside end-to-end deep neural network accelerators.
Dual-stage and dynamic-truncation approximate multipliers, 4:2 / 5:2 compressors, and partial-product reduction trees with bounded Mean Relative Error Distance (MRED).
Hardware-friendly Mitchell logarithmic multipliers and tapered-precision POSIT arithmetic units for energy-constrained neural inference.
Co-optimizing approximate arithmetic circuits with quantization-aware training so CNN and vision accuracy remains within <0.5% of IEEE-754 baseline.
Comprehensive characterization of Power-Delay Product (PDP), Area-Delay Product (ADP), and error metrics across 45nm, 28nm, and 130nm CMOS technology nodes.
Agency: Kerala State Council for Science, Technology and Environment (KSCSTE) · Grant: 0.10 Lakhs
Vinayak Bijesh, Ekanath R Das, Kala S · 2026 IEEE 2nd International Conference on Smart Power Control and Renewable Energy (ICSPCRE), NIT Rourkela, India, 2026
Remya R, Aswathymol A, Manju Manuel, Kala S · 2nd IEEE International Conference on Advances in Intelligent Computing and Applications (AICAPS), Feb 11-13, 2026, Kerala, India 2025
Keerthana Menon, Jayakrushna Sahoo, Kala S, Nalesh S · IEEE Region-10 Conference TENCON 2025 (Flagship international conference of IEEE Region-10), October 27-30, 2025, Malaysia
Aparna Nair M K, Mahesh M, Minu A Pillai, Nalesh S, Kala S · 5th International Conference on Emerging Electronics and Automation (E2A), December 17-19, 2025, NIT Silchar, India
Rachana George, Kondapalli Moulya, Santhos Kumar A, Nalesh S, Kala S · 2025 IEEE Recent Advances in Intelligent Computational Systems (RAICS), Kerala, Nov 20-23, 2025, India.
Rachana George, Kala S and Nalesh S · 2nd IEEE International Conference on Trends in Engineering Systems and Technologies (ICTEST), April 3-5, 2025, Kerala, India.
Rachana George, Rose Mary Kuruvithadam, S Sreeparvathy, S Kala, S Nalesh · International Journal of Signal and Imaging Systems Engineering, pp. 95-108, 2024
Shivasai Reddy, Rachana George, Nalesh S, Kala S · 2024 IEEE International Conference on Smart Electronics and Communication Systems (ISENSE), December 6-7, 2024, Kerala, India
Supervisor: Dr. Kala S
