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Proceedings Paper

Robust equalizer in optical fiber systems under parameter uncertainty
Author(s): Kyungsup Kim; Jinho Bae; Joohwan Chun
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Paper Abstract

An H(infinity )-optimized equalizer is presented to realize an optimal causal and stable equalizer in optical fiber systems. With an ordinary (non-adaptive) equalizer, uncertainty due to the length of an optical fiber, the number of users and temperature may cause degradation to the system performance. The proposed non-adaptive equalizer still gives satisfactory performance because it uses the H(infinity )-criterion, i.e., it is designed to cope with the worst-case. Our algorithm is robust while the channel characteristics and the statistics of input and external noise are uncertain with a bound. Moreover, while the conventional H(infinity ) approach is to minimize the peak error gain over the entire frequency range, we propose a modified H(infinity ) equalizer to focus on the limited used frequency region by using a weight function.

Paper Details

Date Published: 2 February 2001
PDF: 9 pages
Proc. SPIE 4216, Optical Devices for Fiber Communication II, (2 February 2001); doi: 10.1117/12.414115
Show Author Affiliations
Kyungsup Kim, Korea Advanced Institute of Science and Technology (South Korea)
Jinho Bae, Korea Advanced Institute of Science and Technology (South Korea)
Joohwan Chun, Korea Advanced Institute of Science and Technology (South Korea)

Published in SPIE Proceedings Vol. 4216:
Optical Devices for Fiber Communication II
Dilip K. Paul; Michel J. F. Digonnet; Osman S. Gebizlioglu; Osman S. Gebizlioglu; Roger A. Greenwell; Roger A. Greenwell; Dennis N. Horwitz; Dennis N. Horwitz; Dilip K. Paul, Editor(s)

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