Title :
Coupled-Oscillator Associative Memory Array Operation for Pattern Recognition
Author :
Nikonov, Dmitri E. ; Csaba, Gyorgy ; Porod, Wolfgang ; Shibata, Tadashi ; Voils, Danny ; Hammerstrom, Dan ; Young, Ian A. ; Bourianoff, George I.
Author_Institution :
Components Res., Intel Corp., Hillsboro, OR, USA
Abstract :
The operation of an array of coupled oscillators underlying the associative memory function is demonstrated for various interconnection topologies (cross-connect and star-coupled). Three types of nonlinear oscillators (Andronov-Hopf, phase-locked loop, and spin torque) and their synchronization behavior are compared. Frequency-shift keying scheme of encoding input and memorized data is introduced. The speed of synchronization of oscillators and the evolution of the degree of match are studied as a function of device parameters.
Keywords :
content-addressable storage; encoding; frequency shift keying; pattern recognition; synchronisation; Andronov-Hopf nonlinear oscillators; coupled-oscillator associative memory array operation; cross-connect interconnection topology; encoding input; frequency-shift keying scheme; memorized data; pattern recognition; phase-locked loop; spin torque; star-coupled interconnection topology; synchronization behavior; Couplings; Frequency shift keying; Oscillators; Pattern recognition; Phase shift keying; Synchronization; Array; Non-Boolean computing; array; associative memory; neural networks; non-Boolean computing; oscillator; phase-locked loop; phase-locked loop (PLL); sparse representation; spin torque;
Journal_Title :
Exploratory Solid-State Computational Devices and Circuits, IEEE Journal on
DOI :
10.1109/JXCDC.2015.2504049
