Minimum BER criterion for electrical equalizer in optical communication systems

Author

Katz, Gilad ; Sadot, Dan

Author_Institution

Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

Volume

24

Issue

7

fYear

2006

fDate

7/1/2006 12:00:00 AM

Firstpage

2844

Lastpage

2850

Abstract

The electrical equalizer (EE) for dispersion compensation is a key and cost-effective element in optical communication OOK systems in the presence of a chromatic dispersion The most common but suboptimal optimization criterion for the EE weights is based on minimizing the mean square error (mse). Here, the authors examine the optimal optimization criterion, minimum bit error rate (MBER) for a feedforward equalizer (FFE) weights in optical communication systems. A BER performance comparison analysis shows that the MBER optimization criterion introduces improvements over the conventional minimum mse optimization criterion. In addition, the authors introduce a new simplified method for computing the FFE weights using the concept of decision boundary.

Keywords

compensation; decision circuits; equalisers; error statistics; feedforward; mean square error methods; optical fibre communication; optical fibre dispersion; optimisation; BER; MBER; OOK systems; chromatic dispersion; decision boundary; dispersion compensation; electrical equalizer; feedforward equalizer; mean square error; minimum bit error rate; optimal optimization criterion; Bit error rate; Chromatic dispersion; Decision feedback equalizers; Erbium-doped fiber amplifier; Mean square error methods; Optical feedback; Optical fiber communication; Performance analysis; Semiconductor optical amplifiers; Stimulated emission; Electrical equalizer (EE); electronic dispersion compensation (EDC); minimum bit error rate (MBER); optical communication system;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2006.875960

Filename

1650560