Optimization of Parameters of Adders and Barrel Shifter Based on Emerging QCA Technology

Design and implementation of an efficient multilayer, Multibit Barrel-Shifter using QCA with reversibility and stability

“…Thus, the power consumption, as well as dissipation, is also less for QCA-based Barrel Shifter, which is added in this paper with more optimization of occupied unit area and cell-complexity of barrel shifter through multilayer QCA eld. But, the delay of barrel Shifter is higher than the other one based on the papers [7][8]. But, in this paper, the delay of the Barrel Shifter is reduced by multilayer circuitry.…”

“…Because of this problem the delay of the design is increased with output polarization reduction. The output polarization [7] [21] maintenance with potential barrier in output cell is very signi cant to develop the stability of QCA-structures. 2, where the reversibility is shown through the yellow part.…”

“…Thus, 75% reversibility is maintained in this work without using any extra huge area for any extra logical representation. Next, the presented MUX design is applied to con gure a 4 bit Barrel Shifter by following the block diagram of paper [7]'s QCA based design and show more optimization compare to this design. In Fig.…”

“…Before designing the 8 bit Barrel Shifter, a novel multilayer 4-bit Barrel Shifter is con gured in this paper. There are some recent works on single-layer normal quantum cell and crossing cell-based 4-bit binary right shifter published [7][8]. Among them, Nirupma Pathak et al presented the 4 bit Barrel Shifter of 2021 and Jadav Chandra Das et al presented the 4 bit shifter of 2022 proving a highly effective parametric advancement of QCA technology-based shifter designs.…”

“…The proposed Barrel Shifters are 75% reversible 2:1 MUX based. In this present time (in between 3 years) some different designs of 9 to 10 cellbased 2:1 MUXes are presented [7,[9][10] using QCA technology in a single layer. But multilayer MUX design with reversibility checking is not presented in these published works, which is presented here by presenting 2 constant outcomes only.…”