Blind Carrier Frequency Offset Estimation Based on Eighth-Order Statistics for Coherent Optical QAM Systems

Author

Li, Ming ; Chen, Lian-Kuan

Author_Institution

Dept. of Inf. Eng., Chinese Univ. of Hong Kong, Hong Kong, China

Volume

23

Issue

21

fYear

2011

Firstpage

1612

Lastpage

1614

Abstract

We propose a carrier frequency offset estimation (FOE) algorithm based on eighth-order statistics for optical quadrature amplitude modulation (QAM) signals. The FOE algorithm does not involve fast Fourier transformation and can be implemented by hardware with little memory and computation resources. Simulation results show that in a 10.709-GBaud/s optical 16-QAM system, carrier frequency offset ranging between ± 1.25 GHz can be estimated with a uniform standard deviation of 2 MHz when the optical signal-to-noise ratio is 17 dB and 4¹⁰ symbols are utilized.

Keywords

optical engineering computing; optical fibre communication; quadrature amplitude modulation; statistical analysis; blind carrier frequency offset estimation; coherent optical QAM systems; eighth order statistics; optical signal-to-noise ratio; quadrature amplitude modulation; Adaptive optics; Fiber optics; Frequency estimation; Optical noise; Optical receivers; Optical transmitters; Quadrature amplitude modulation; Coherent detection; frequency estimation; optical fiber communication; quadrature amplitude modulation (QAM);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2164788

Filename

5983396