Abstract
We analyze the linear equalizers used in optically amplified on-off-keyed (OOK) systems to combat chromatic dispersion (CD) and polarization mode dispersion (PMD), and we derive the mathematical minimum mean squared error (MMSE) performance of these equalizers. Currently, the MMSE linear equalizer for optical OOK systems is obtained by simulations using adaptive approaches such as least mean squared (LMS) or constant modulus algorithm (CMA), but no theoretical studies on the optimal solutions for these equalizers have been performed. We model the optical OOK systems as square-law nonlinear channels and compute the MMSE equalizer coefficients directly from the estimated optical channel, signal power, and optical noise variance. The accuracy of the calculated MMSE equalizer coefficients and MMSE performance has been verified by simulations using adaptive algorithms.
| Original language | English |
|---|---|
| Pages (from-to) | 232-236 |
| Number of pages | 5 |
| Journal | Journal of the Optical Society of Korea |
| Volume | 15 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2011 Sep 1 |
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Keywords
- Electrical equalizers
- Nonlinear channels
- Optical communications
- Square-law detector
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Performance analysis of electrical MMSE linear equalizers in optically amplified OOK systems. / Park, Jangwoo; Chung, Wonzoo.
In: Journal of the Optical Society of Korea, Vol. 15, No. 3, 01.09.2011, p. 232-236.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Performance analysis of electrical MMSE linear equalizers in optically amplified OOK systems
AU - Park, Jangwoo
AU - Chung, Wonzoo
PY - 2011/9/1
Y1 - 2011/9/1
N2 - We analyze the linear equalizers used in optically amplified on-off-keyed (OOK) systems to combat chromatic dispersion (CD) and polarization mode dispersion (PMD), and we derive the mathematical minimum mean squared error (MMSE) performance of these equalizers. Currently, the MMSE linear equalizer for optical OOK systems is obtained by simulations using adaptive approaches such as least mean squared (LMS) or constant modulus algorithm (CMA), but no theoretical studies on the optimal solutions for these equalizers have been performed. We model the optical OOK systems as square-law nonlinear channels and compute the MMSE equalizer coefficients directly from the estimated optical channel, signal power, and optical noise variance. The accuracy of the calculated MMSE equalizer coefficients and MMSE performance has been verified by simulations using adaptive algorithms.
AB - We analyze the linear equalizers used in optically amplified on-off-keyed (OOK) systems to combat chromatic dispersion (CD) and polarization mode dispersion (PMD), and we derive the mathematical minimum mean squared error (MMSE) performance of these equalizers. Currently, the MMSE linear equalizer for optical OOK systems is obtained by simulations using adaptive approaches such as least mean squared (LMS) or constant modulus algorithm (CMA), but no theoretical studies on the optimal solutions for these equalizers have been performed. We model the optical OOK systems as square-law nonlinear channels and compute the MMSE equalizer coefficients directly from the estimated optical channel, signal power, and optical noise variance. The accuracy of the calculated MMSE equalizer coefficients and MMSE performance has been verified by simulations using adaptive algorithms.
KW - Electrical equalizers
KW - Nonlinear channels
KW - Optical communications
KW - Square-law detector
UR - http://www.scopus.com/inward/record.url?scp=80053964496&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053964496&partnerID=8YFLogxK
U2 - 10.3807/JOSK.2011.15.3.232
DO - 10.3807/JOSK.2011.15.3.232
M3 - Article
VL - 15
SP - 232
EP - 236
JO - Journal of the Optical Society of Korea
JF - Journal of the Optical Society of Korea
SN - 1226-4776
IS - 3
ER -