Efficient Design of QCA Adder Structures
Optimizing arithmetic primitives such as quantum-dot cellular automata (QCA) adders is important for investigating high-performance QCA computers in this emerging nano-technological paradigm. In this paper, we demonstrate that QCA ripple carry adder and bit-serial adder designs actually outperform carry-look-ahead and carry-select adder designs because of the increase in required interconnects. Simulation results obtained by using the QCADesigner tool for the proposed adder designs are also presented.
Chunli BAI, Sishen XIE, Xing ZHU
S. Haruehanroengra and W. Wang, "Efficient Design of QCA Adder Structures", Solid State Phenomena, Vols. 121-123, pp. 553-556, 2007