Journal
JOURNAL OF APPLIED PHYSICS
Volume 124, Issue 23, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5041998
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- Japan Science and Technology Corporation (JST) through its ImPACT program
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The scalability and computational ability of the coherent Ising machine (CIM) have made it attract attention as one of the most effective Ising computing architectures for solving large-scale optimization problems. However, the theory and techniques of equilibrium classical thermodynamics cannot be directly applied to the CIM because it is an open-dissipative system. In an attempt to adapt the theory and techniques to the CIM, we have used a canonical frustrated model of Ising computation called the CDMA (Code Division Multiple Access) multiuser detector. Here, we derive a macroscopic equation to estimate the critical value of the spreading factor for achieving a low bit error rate as a function of the normalized pump rate in the CIM-implemented CDMA multiuser detector. (C) 2018 Author(s).
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