Regular Paper

[OPTICAL REVIEW Vol. 21, No. 5 (2014) 563-567]
© 2014 The Japan Society of Applied Physics

Sparse Modeling of Super-Resolution Near-Field Structure Read-Out Signals

Woosik MOON1, Sungbin IM1*, and Taehyung PARK2

1TC Lab., School of Electronic Engineering, Soongsil University, Seoul 156-743, Korea
2Department of Industrial and Information Systems Engineering, Soongsil University, Seoul 156-743, Korea

(Received November 30, 2013; Accepted May 15, 2014)

In this study, super-RENS disc read-out signals were modeled with various nonlinear models. In the results of modeling the nonlinearity, DC offset, and domain bloom phenomena of the super-RENS channel with a second-order Volterra filter, it was identified that the number of significant quadratic coefficients was relatively small. Therefore, a sparse Volterra model and a truncated Volterra model are applied to effectively model the nonlinear channel. In addition, the Hammerstein-type asymmetric conversion model is employed to model the nonlinear channel for the purpose of comparison. The results demonstrate that the sparse model of a simplified polynomial form achieves good modeling performance for the super-RENS disc read-out signals.

Key words: asymmetry model, sparse model, super-RENS, Volterra model

*E-mail address:


© 1994-2014 The Japan Society of Applied Physics
Produced, Developed, and Maintained by The Optical Society of Japan (An Affiliate of the Japan Society of Applied Physics)
Printed in Japan by Komiyama Printing Co., Ltd.

mail to Editorial Office, OPTICAL REVIEW