Digital system design
Low-Noise Electronic System Design
Low-Noise Electronic System Design
Conquering Noise in Deep-Submicron Digital ICs
IEEE Design & Test
Energy Aware Computing through Probabilistic Switching: A Study of Limits
IEEE Transactions on Computers
Probabilistic arithmetic and energy efficient embedded signal processing
CASES '06 Proceedings of the 2006 international conference on Compilers, architecture and synthesis for embedded systems
CASES '08 Proceedings of the 2008 international conference on Compilers, architectures and synthesis for embedded systems
CMOS Digital Integrated Circuits Analysis & Design
CMOS Digital Integrated Circuits Analysis & Design
Accuracy-configurable adder for approximate arithmetic designs
Proceedings of the 49th Annual Design Automation Conference
Proceedings of the Ninth IEEE/ACM/IFIP International Conference on Hardware/Software Codesign and System Synthesis
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Probabilistic CMOS is considered to be a promising technology for substantial energy savings for computing devices, such as DSPs and graphics chips. The basic principle is to relax the energy requirement by allowing possibly incorrect computation results. For devices with probabilistic components, energy should be assigned to each component wisely, in order to achieve a good trade-off between energy consumption and correctness of the outputs. Recently, a few schemes have been proposed for energy assignment of ripple-carry adders, which are often based on intuitive arguments. In the present paper, we extend the idea of energy assignment to probabilistic multipliers. We focus on a fundamental type of multipliers, known as array multipliers. We derive some analytical results. Guided by these results, we devise an energy assignment scheme. We also find that energy assignment for array multipliers and ripple-carry adders can be quite different, due to differences in their structures. To our best knowledge, our work here is the first attempt in the literature to consider energy assignment for multipliers. Some examples, including digital image enhancement, are presented to demonstrate the effectiveness of the proposed scheme.