Please use this identifier to cite or link to this item: https://doi.org/10.1364/OE.20.020102
Title: A complex-weighted, decision-aided, maximum-likelihood carrier phase and frequency-offset estimation algorithm for coherent optical detection
Authors: Meiyappan, A.
Kam, P.-Y. 
Kim, H. 
Issue Date: 27-Aug-2012
Citation: Meiyappan, A., Kam, P.-Y., Kim, H. (2012-08-27). A complex-weighted, decision-aided, maximum-likelihood carrier phase and frequency-offset estimation algorithm for coherent optical detection. Optics Express 20 (18) : 20102-20114. ScholarBank@NUS Repository. https://doi.org/10.1364/OE.20.020102
Abstract: We present a symbol-by-symbol coherent optical receiver, which employs a novel, complex-weighted, decision-aided, maximum-likelihood (CW-DA-ML) carrier phase and frequency offset estimator. The CW-DA-ML carrier estimator uses a CW transversal filter to generate a carrier reference phasor, and the filter weights are automatically adapted on-line by linear regression on the observed signals. A complete modulo-R reduced frequency offset estimation (FOE) range of ± R/2 is achieved, independent of modulation format, where R is the symbol rate. Carrier phase and frequency tracking is achieved rapidly. The acquisition speed of frequency offset in quaternary phase-shift keying (4-PSK) signals is more than 5 times faster than that of differential FOE. A constant penalty of approximately 1 dB at bit-error rate of 10-4 is demonstrated for all frequency offsets in 4-PSK signals with laser-linewidth-symbol-duration product of 8 × 10-5 . © 2012 Optical Society of America.
Source Title: Optics Express
URI: http://scholarbank.nus.edu.sg/handle/10635/81851
ISSN: 10944087
DOI: 10.1364/OE.20.020102
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

15
checked on Nov 11, 2018

WEB OF SCIENCETM
Citations

11
checked on Oct 23, 2018

Page view(s)

35
checked on Nov 16, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.