Design of Space-Efficient Nano Router in Reversible Logic with Multilayer Architecture

The reversible logic is a promising technology for zero power dissipation. The reversible logic circuits are realized in quantum cellular automata (QCA), which are called as quantum circuits. The router is a predominant device in the modern communication era. The router is expected to perform faster with minimum area requirement and power consumption. In this paper, a nano router is designed in reversible logic and it is realized in quantum cellular automata. The memory plane and the routing data plane are the major functional components of the router. These are constructed from the basic peripherals decoder, memory array, multiplexer, switch fabric and parallel-to-serial converter. The constructed router peripherals are combined together to form the integrated router and it is realized in QCA. The QCA realized structure has the significance of multilayer crossing for its wire crossing. The multilayer crossing reduces the number of cells required for realization and also it passes the signal without any degradation. The simulation results confirm that the proposed router consumes minimum resources for its realization (up to 50% improvement) than the existing. The nano router is suitable for nano-communication applications. The realization is performed in QCADesigner tool.