Dispersion Compensation FIR Filter with Improved Robustness to Coefficient Quantization Errors
Journal article, 2016

In this paper, we propose a new finite impulse response (FIR) filter for chromatic dispersion compensation which is given in closed form. We identify a relation between the out-of-band gain and the in-band error when the filter is implemented with finite-precision arithmetic. In particular, a large out-of-band gain makes the filter more sensitive to coefficient quantization errors due to finite precision digital signal processing. To improve robustness to coefficient quantization errors, our proposed filter is designed based on confining the out-of-band gain. By means of simulations, we show that our filter outperforms other existing FIR filters. The performance gain improves with increasing modulation order and decreasing number of bits used to represent the filter taps.

FIR filter

Chromatic dispersion compensation

constrained least-squares

quantization errors

Author

Alireza Sheikh

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Christoffer Fougstedt

Chalmers, Computer Science and Engineering (Chalmers), Computer Engineering (Chalmers)

Alexandre Graell i Amat

Chalmers, Signals and Systems, Communication and Antenna Systems, Communication Systems

Pontus Johannisson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Per Larsson-Edefors

Chalmers, Computer Science and Engineering (Chalmers), Computer Engineering (Chalmers)

Magnus Karlsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Journal of Lightwave Technology

0733-8724 (ISSN)

Vol. 34 22 5110-5117 7539529

Areas of Advance

Information and Communication Technology

Energy

Subject Categories

Communication Systems

DOI

10.1109/JLT.2016.2599276

More information

Created

10/8/2017