Journal of the Institute of Electronics Engineers of Korea TC (대한전자공학회논문지TC)

The Institute of Electronics and Information Engineers (대한전자공학회)
권호 표지

Modeling and Equalization for Super-RENS Systems Based on the Canonical Piecewise-Linear and Volterra Models

정규 구간선형 모델과 볼테라 모델을 기반한 Super-RENS 시스템 모델링 및 등화

  • Seo, Man-Jung (School of Electronic Engineering, Soongsil University) ;
  • Shim, Hee-Sung (School of Electronic Engineering, Soongsil University) ;
  • Im, Sung-Bin (School of Electronic Engineering, Soongsil University)
  • 서만중 (숭실대학교 정보통신전자공학부) ;
  • 심희성 (숭실대학교 정보통신전자공학부) ;
  • 임성빈 (숭실대학교 정보통신전자공학부)
  • Published : 2010.02.25
Download PDF
⟨ Previous Next ⟩

Abstract

A correct and accurate model of optical data storage systems is very important in development and performance evaluation of various data detection algorithms. In this paper, we present an nonlinear modeling scheme of a super-resolution near-field structure (Super-RENS) read-out signal using the canonical piecewise-linear (PWL) and the second-order Volterra models. Nonlinear equalizers may be developed on the basis of the information obtained from this nonlinear modeling. To mitigate the nonlinear inter-symbol interference (ISI), we proposed a new nonlinear equalizer for Super-RENS discs. Its validity is tested with the RF signal samples obtained from a Super-RENS disc. The experiment results verified the possibility that the canonical PWL and the second-older Volterra models can be utilized for nonlinear modeling of Super-RENS systems. The proposed equalizers are superior to the one without equalization in terms of bit error rate (BER).

신뢰성 있는 채널 모델은 다양한 데이터 검출 알고리즘의 개발과 성능 평가에 중요한 척도가 되므로 정확한 모델링이 요구된다. 본 논문에서는 Super-RENS (Super-Resolution Near-field Structure) 시스템의 비선형 모델링을 위해 정규 구간선형 모델 (canonical piecewise-linear; PWL)과 2차 볼테라 (second-order Volterra) 모델을 적용하고자 한다. 또한 이를 바탕으로 비선형 심볼간 간섭 (Inter-Symbol Interference; ISI)을 제거하기 위해 새로운 비선형 등화기를 제안한다. Super-RENS 디스크로부터 획득한 RF 신호 샘플들을 사용하여 모의실험을 수행한 결과, Super-RENS 시스템의 비선형 모델링을 위해 정규 구간선형 모델과 2차 볼테라 모델이 유용하게 활용될 수 있다는 가능성을 확인하였고 제안된 비선형 등화기의 성능은 비트오율 측면에서 등화기가 없는 경우보다 우수한 성능을 나타내었다.

Keywords

References

  1. http://www.blu-raydisc.com/en.html
  2. J. Tominaga, T. Nakano, and N. Atoda, "An approach for recording and readout beyond the diffraction limit with an Sb thin film," Appl. Phys. Lett., vol. 73, no. 15, pp. 2078-2080, Oct. 1998. https://doi.org/10.1063/1.122383
  3. T. Nakano, A. Sato, H. Fuji, J. Tominaga, and N. Atoda, "Transmitted signal detection of optical disks with a superresolution near-field structure," Appl. Phys. Lett., vol. 75, no. 2, pp. 151-153, Jul. 1999. https://doi.org/10.1063/1.124302
  4. D. P. Tsai, and W. C. Lin, "Probing the near fields of the super-resolution near-field optical structure," Appl. Phys. Lett., vol. 77, no. 10, pp. 1413-1415, Sep. 2000. https://doi.org/10.1063/1.1290692
  5. 김주호, 황인오, 김현기, 윤두섭, 박인식, "Optical Memory Disc Using Super-resolution Phenomenon of Super-RENS Technology," Optical Society of Korea Annual Meeting 2004, pp. 248-251, Feb. 2004.
  6. 서만중, 임성빈, 이재진, "신경망을 이용한 Super-RENS 시스템의 비선형 모델링," 대한전자공학회 논문지, vol. 45, no. 3, pp. 53-60, 2008년 3월.
  7. L. O. Chua and R. Ying, "Canonical Piecewise-Linear Analysis," IEEE Trans. Circ. Syst., vol. CAS-30, no. 3, pp. 125-140, Mar. 1983.
  8. L. O. Chua and A. C. Deng, "Canonical Piecewise-Linear Modeling," IEEE Trans. Circ. Syst., vol. CAS-33, no. 5, pp. 511-525, May 1986.
  9. C. Kahlert and L. O. Chua, "A Generalized Canonical Piecewise-Linear Representation," IEEE Trans. Circ. Syst., vol. 37, no. 3, pp. 373-383, Mar. 1990. https://doi.org/10.1109/31.52731
  10. R. Batruni, "A Multilayer Neural Network with Piecewise-Linear Structure and Back-Propagation Learning," IEEE Trans. Neural Networks, vol. 2, no. 3, pp. 395-403, May 1991. https://doi.org/10.1109/72.97915
  11. M. Schetzen, The Volterra and Wiener Theories of Nonlinear Systems, New York: Wiley, 1980.
  12. K. Kwak, S. Kim, C. Lee, and K. Song, "New materials for super-resolution disc," SPIE Proceedings, vol. 6620, ODS2007 TuC5, 2007.
  13. 서만중, 임성빈, "Super-RENS 디스크를 위한 신경망 기반의 비선형 등화기," 대한전자공학회 논문지, vol. 45, no. 12, pp. 90-96, 2008년 12월.