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DATE
2010
IEEE

A general mathematical model of probabilistic ripple-carry adders

13 years 10 days ago
A general mathematical model of probabilistic ripple-carry adders
Probabilistic CMOS is considered a promising technology for future generations of computing devices. By embracing possibly incorrect calculations, the technology makes it possible to trade correctness of circuit operations for potentially significant energy saving. For systematic design of probabilistic circuits, accurate mathematical models are indispensable. To this end, we propose a model of probabilistic ripplecarry adders. Compared to existing models, ours is applicable under a wide range of noise assumptions, including the popular additive-noise assumption. Our model provides recursive equations that can accurately capture propagation of carry errors. The proposed model is validated by HSPICE simulation, and we find that the model is able to predict multi-bit error-rates of a simulated probabilistic ripple-carry adder with reasonable accuracy.
Mark S. K. Lau, Keck Voon Ling, Yun-Chung Chu, Aru
Added 22 Mar 2011
Updated 22 Mar 2011
Type Journal
Year 2010
Where DATE
Authors Mark S. K. Lau, Keck Voon Ling, Yun-Chung Chu, Arun Bhanu
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