scholarly journals Introducing an optimal QCA crossbar switch for baseline network

2021 ◽  
Vol 34 (3) ◽  
pp. 445-460
Author(s):  
Reza Sabbaghi-Nadooshan

Crossbar switch is the basic component in multi-stage interconnection networks. Therefore, this study was conducted to investigate performance of a crossbar switch with two multiplexers. The presented crossbar switch was simulated using quantum-dot cellular automata (QCA) technology and QCA Designer software, and was studied and optimized in terms of cell number, occupied area, number of clocks, and energy consumption. Using the provided crossbar switch, the baseline network was designed to be optimal in terms of cell number and occupied area. Also, the number of input states was investigated and simulated to verify accuracy of the baseline network. The proposed crossbar switch uses 62 QCA cells and the occupied area by the switch is equal to 0.06?m2 and its latency equals 4 clock zones, which is more efficient than the other designs. In this paper, using the presented crossbar switch, the baseline network was designed with 1713 cells, and occupied area of 2.89?m2.

Currently digital circuits have a high flying role in most communications applications. In this Paper, a successful approach to risk-free circuit analysis and design using quantum dot cellular automata is explored at the Nano level. This paper, which we use for both integrated and continuous digital circuits, is a basic component of QCA circuit operation. The Quantum Dot Cellular Automata Designer Tool is very useful for designing a large risk-free circuit. So the proposed risk-free circuit is designed and simulated using this designing software utensil for three input stages. The proposed framework for the risk-free circuit requires only a small number of major gate operations compared to previous structures because of its three input levels.


2020 ◽  
Vol 8 (5) ◽  
pp. 3999-4003

Quantum Dot Cellular Automata (QCA) is treated as a most promising technology after CMOS techniques. The major advantages of QCA techniques are faster speed, lower energy consumption and smaller size. The implementation of clocks play very big role in the effective design of QCA circuits. In this paper, a QCA circuit is designed using the concept of QCA clocks. The proposed study describes a new method of implementing the logical function with power depletion analysis. The proposed logical function uses total number of 57 cells in which the area of each cell 372 nm2. The energy dissipation in this implementation is 18.79 meV and the total acquired area is 0.192 µm2. The proposed circuit is implemented utilizing QCA Designer. The proposal is excellent in the realization of nano-scale computing with minimal power utilization. The results are compared with the existing approaches and improvements of 6% in the area required and 7% in the number of cells are achieved


2019 ◽  
Vol 8 (4) ◽  
pp. 10611-10619

Quantum dot Cellular Automata (QCA) is the alternative technology to the classic CMOS technology since it is going to attain a road block in reducing power consumption and increase speed of the digital circuits. Circuit switching network is the basic component in order to transmit input signal among the different users within the communication network. A novel crossbar switch is proposed in this paper to design this communication network. The basic building blocks of the proposed circuit Switching network are Crossbar switch, Multiplexer and Demultiplexer. Multilayer QCA cells are almost impossible when compared to the fabrication feasibility of the single layer design. So this design is achieved in single layer.Circuit switching network is designed and compared with existing one using QCA Designer2.0.3.The designs are verified through matching up with truth tables.


2015 ◽  
Vol 39 (7) ◽  
pp. 512-520 ◽  
Author(s):  
Shaahin Angizi ◽  
Mohammad Hossein Moaiyeri ◽  
Shohreh Farrokhi ◽  
Keivan Navi ◽  
Nader Bagherzadeh

2014 ◽  
Vol 2014 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Arighna Sarkar ◽  
◽  
Debarka Mukhopadhyay ◽  

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