Dispersion Compensation FIR Filter with Improved Robustness to Coefficient Quantization Errors
Artikel i vetenskaplig tidskrift, 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

Författare

Alireza Sheikh

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Christoffer Fougstedt

Chalmers, Data- och informationsteknik, Datorteknik

Alexandre Graell i Amat

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

Pontus Johannisson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Per Larsson-Edefors

Chalmers, Data- och informationsteknik, Datorteknik

Magnus Karlsson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Fotonik

Journal of Lightwave Technology

0733-8724 (ISSN)

Vol. 34 22 5110-5117 7539529

Styrkeområden

Informations- och kommunikationsteknik

Energi

Ämneskategorier

Kommunikationssystem

DOI

10.1109/JLT.2016.2599276

Mer information

Skapat

2017-10-08