Performance Analysis of Quantum Dot Cellular Automata (QCA) based Linear Feedback Shift Register (LFSR)
Balwinder Singh, Birinderjit Singh Kalyan · International Journal of Computing and Digital Systems · 2020
The latest trends in the digital design circuits are based on Quantum Dot based structures.The Quantum-dot Cellular automata is paradigm in the area of Nano chip design in terms of their size and low power, which plays a significant role in the Nano electronic industry.This paper presents a novel robust design of LFSR which consumes lesser power than conventional design which is restructured using QCA based XOR gate and D Flip Flop.The simulation of the proposed design were done using coherence engine vector of QCA designer tool.The D flip flop show 41% lesser complexity and power with the single latency.The XOR Gate is designed with 22 QCA Cells and complexity of 0.02 µm 2 and latency of 0.75 cycles as compare to previous design which was having 28 cells.The proposed 4 Bit LFSR is designed using four D flip flops and one XOR gate, further average power dissipation is calculated.