Polarization mode dispersion tolerance of an adaptive threshold receiver

Kaneda, Noriaki; Burrows, E.C.; Le, Binh; Sticht, K.; Hartlaub, M.; Jopson, R.M.

doi:10.1109/leosst.2002.1027565

Cited by 4 publications

(1 citation statement)

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“…In view of the nonsymmetric distributions for bits 0 and 1 (having different variances) reflected in the signal-dependent term after square-law detection, the optimal threshold point is usually not the midpoint. Therefore, an automatic threshold control algorithm (ATC) is designed to track the incoming signal profile and automatically adjust the threshold in the CDR for the minimum bit error rate [39]. In this paper, the ideal ATC algorithm is employed by searching the entire simulation sequence for the best threshold value to obtain the least number of errored bits.…”

Section: Slicer With Automatic Threshold Controlmentioning

confidence: 99%

Adaptive Electronic Dispersion Compensator for Chromatic and Polarization-Mode Dispersions in Optical Communication Systems

Koc¹

2005

EURASIP J. Adv. Signal Process.

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The widely-used LMS algorithm for coefficient updates in adaptive (feedforward/decision-feedback) equalizers is found to be suboptimal for ASE-dominant systems but various coefficient-dithering approaches suffer from slow adaptation rate without guarantee of convergence. In view of the non-Gaussian nature of optical noise after the square-law optoelectronic conversion, we propose to apply the higher-order least-mean 2Nth-order (LMN) algorithms resulting in OSNR penalty which is 1.5Ã¢Â€Â“2 dB less than that of LMS. Furthermore, combined with adjustable slicer threshold control, the proposed equalizer structures are demonstrated through extensive Monte Carlo simulations to achieve better performance

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Section: Slicer With Automatic Threshold Controlmentioning

confidence: 99%