Journal ArticleDOI
A Bit-Serial Pipelined Architecture for High-Performance DHT Computation in Quantum-Dot Cellular Automata
Vikramkumar Pudi,K. Sridharan +1 more
Reads0
Chats0
TLDR
A bit-serial pipelined architecture is proposed for QCA-based DHT realization of the discrete Hadamard transform based on a new one-bit adder-subtractor requiring only six majority gates and a feedback latch that requires only one majority gate and limited wiring.Abstract:
In this brief, we consider quantum-dot cellular automata (QCA) realization of the discrete Hadamard transform (DHT). An analysis of a full-parallel solution based on efficient multibit addition in QCA is first presented. We show that this leads to large area as well as delay. We then propose a bit-serial pipelined architecture for QCA-based DHT. The proposed architecture is based on a new one-bit adder–subtractor requiring only six majority gates and a feedback latch that requires only one majority gate and limited wiring. The approach leads to a reduction in area-delay-cycle product of 74% and 91% (over a full-parallel solution) for wordlengths of 4 and 8, respectively. Results of simulations in QCADesigner are also presented.read more
Citations
More filters
Journal ArticleDOI
USE: A Universal, Scalable, and Efficient Clocking Scheme for QCA
TL;DR: The universal, scalable, efficient (USE), and easily manufacturable clocking scheme solves one of the most limiting factors of existing clock schemes, the implementation of feedback paths and easy routing of QCA-based circuits.
Journal ArticleDOI
High-performance full adder architecture in quantum-dot cellular automata
Hamid Rashidi,Abdalhossein Rezai +1 more
TL;DR: Two QCA full adder architectures are presented and evaluated: a new and efficient 1-bit QCAFull adder architecture and a 4-bitQCA ripple carry adder (RCA) architecture that outperform most results so far in the literature.
Journal ArticleDOI
Circuit switching with Quantum-Dot Cellular Automata
TL;DR: The design of a novel fault-tolerant circuit switched network based on Quantum-Dot Cellular Automata (QCA) is demonstrated and all those proposed QCA layouts have low energy dissipation, which is shown by exploring the dissipated energy by the layouts.
Journal ArticleDOI
On the reliability of majority logic structure in quantum-dot cellular automata
TL;DR: The proposed model ensures high fault tolerance under single missing cell defect providing no other deviation from the ideal architecture than the fact of the missing cell, and a reliability estimation model for QCA is proposed.
Journal ArticleDOI
QCA Based Error Detection Circuit for Nano Communication Network
TL;DR: This paper outlines low power nano-scale circuit design for even parity generator, as well as, even parity checker circuit using quantum-dot cellular automata (QCA), which is much denser and faster than the existing ones.
References
More filters
Journal ArticleDOI
Quantum Cellular Automata
TL;DR: In this article, the authors proposed a new paradigm for computing with cellular automata (CAS) composed of arrays of quantum devices, which is called edge driven computing (EDC), where input, output and power are delivered at the edge of the CA array only; no direct flow of information or energy to internal cells is required.
Journal ArticleDOI
Logical devices implemented using quantum cellular automata
P. Douglas Tougaw,Craig S. Lent +1 more
TL;DR: This work examines the possible implementation of logic devices using coupled quantum dot cells, which use these cells to design inverters, programmable logic gates, dedicated AND and OR gates, and non‐interfering wire crossings.
Journal ArticleDOI
A device architecture for computing with quantum dots
Craig S. Lent,P.D. Tougaw +1 more
TL;DR: A new adiabatic switching paradigm is developed which permits clocked control, eliminates metastability problems, and enables a pipelined architecture.
Journal ArticleDOI
QCADesigner: a rapid design and Simulation tool for quantum-dot cellular automata
TL;DR: This paper describes a project to create a novel design and simulation tool for quantum-dot cellular automata (QCA), namely QCADesigner, which has already been used to design full-adders, barrel shifters, random-access memories, etc.
Journal ArticleDOI
A method of majority logic reduction for quantum cellular automata
TL;DR: A method for reducing the number of majority gates required for computing three-variable Boolean functions is developed to facilitate the conversion of sum-of-products expression into QCA majority logic.