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Radix-4 Recoded Multiplier on Quantum-Dot Cellular Automata

  • Ismo Hänninen
  • Jarmo Takala
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5657)

Abstract

This paper describes the implementation of an advanced multiplication algorithm on quantum-dot cellular automata (QCA) nanotechnology, promising molecular density circuits with extreme operating frequencies, using a single homogeneous layer of the basic cells. The multiplier layout is verified with time-dependent quantum mechanical simulation, to ensure stable ground state computation under the fine-grained pipelining constraints of the technology. The novel design utilizes radix-4 modified Booth recoding and ultra-fast carry-save addition, resulting in stall-free pipeline operation, with twice the throughput of the previous sequential structure and minimized active circuit area.

Keywords

QCA nanotechnology arithmetic multiplication 

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Copyright information

© IFIP International Federation for Information Processing 2009

Authors and Affiliations

  • Ismo Hänninen
    • 1
  • Jarmo Takala
    • 1
  1. 1.Department of Computer SystemsTampere University of TechnologyTampereFinland

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