Design and Application of Mean and Square Root Circuits for Stochastic Computing

Stochastic computing (SC) is an unconventional computing paradigm that represents values using probabilities. This representation enables simple logic gates to perform complex arithmetic operations. This brief proposes two low hardware-cost stochastic mean circuits for even and odd inputs, respectiv...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. II, Express briefs Vol. 72; no. 6; pp. 838 - 842
Main Authors: Wang, Shaowei, Shi, Kai, Xu, Yaohua, Wang, Yi, Zhang, Yongqiang
Format: Journal Article
Language:English
Published: New York IEEE 01.06.2025
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Accuracy
Adders
Algorithms
Arithmetic
binarization processing
Binary sequences
Circuits
Computation
Correlation
Costs
Gates (circuits)
Hardware
Logic circuits
Logic gates
mean circuit
square root circuit
Stochastic computing
Stochastic processes
ISSN:1549-7747, 1558-3791
Online Access:Get full text
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Summary:Stochastic computing (SC) is an unconventional computing paradigm that represents values using probabilities. This representation enables simple logic gates to perform complex arithmetic operations. This brief proposes two low hardware-cost stochastic mean circuits for even and odd inputs, respectively, along with a high-accuracy stochastic square root circuit. The circuits are designed by considering correlation technique and achieve excellent performance. Experimental results demonstrate that the proposed mean circuits surpass previous counterparts in computing accuracy and hardware cost. For instance, the proposed 9-input mean circuit can achieve at least an 86.7% reduction in mean square error (MSE) and a 28.6% reduction in area. For the square root circuit, the proposed design achieves a reduction in MSE of at least 19.6%. The proposed circuits are further demonstrated with the Niblack binarization algorithm, which shows superior performance of accuracy.
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ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2025.3560332