6,146 research outputs found
A Cost- Effective Design of Reversible Programmable Logic Array
In the recent era, Reversible computing is a growing field having
applications in nanotechnology, optical information processing, quantum
networks etc. In this paper, the authors show the design of a cost effective
reversible programmable logic array using VHDL. It is simulated on xilinx ISE
8.2i and results are shown. The proposed reversible Programming logic array
called RPLA is designed by MUX gate [10] & Feynman gate for 3- inputs, which is
able to perform any reversible 3- input logic function or Boolean function.
Furthermore the quantized analysis with camparitive finding is shown for the
realized RPLA against the existing one. The result shows improvement in the
quantum cost and total logical caculation in proposed RPLA.Comment: 6 Pages, 9 Figure
Combined Integer and Floating Point Multiplication Architecture(CIFM) for FPGAs and Its Reversible Logic Implementation
In this paper, the authors propose the idea of a combined integer and
floating point multiplier(CIFM) for FPGAs. The authors propose the replacement
of existing 18x18 dedicated multipliers in FPGAs with dedicated 24x24
multipliers designed with small 4x4 bit multipliers. It is also proposed that
for every dedicated 24x24 bit multiplier block designed with 4x4 bit
multipliers, four redundant 4x4 multiplier should be provided to enforce the
feature of self repairability (to recover from the faults). In the proposed
CIFM reconfigurability at run time is also provided resulting in low power. The
major source of motivation for providing the dedicated 24x24 bit multiplier
stems from the fact that single precision floating point multiplier requires
24x24 bit integer multiplier for mantissa multiplication. A reconfigurable,
self-repairable 24x24 bit multiplier (implemented with 4x4 bit multiply
modules) will ideally suit this purpose, making FPGAs more suitable for integer
as well floating point operations. A dedicated 4x4 bit multiplier is also
proposed in this paper. Moreover, in the recent years, reversible logic has
emerged as a promising technology having its applications in low power CMOS,
quantum computing, nanotechnology, and optical computing. It is not possible to
realize quantum computing without reversible logic. Thus, this paper also paper
provides the reversible logic implementation of the proposed CIFM. The
reversible CIFM designed and proposed here will form the basis of the
completely reversible FPGAs.Comment: Published in the proceedings of the The 49th IEEE International
Midwest Symposium on Circuits and Systems (MWSCAS 2006), Puerto Rico, August
2006. Nominated for the Student Paper Award(12 papers are nominated for
Student paper Award among all submissions
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