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Compensation of frequency offset for 16-QAM optical coherent systems using QPSK partitioning.

Fatadin, I; Savory, S J* (2011) Compensation of frequency offset for 16-QAM optical coherent systems using QPSK partitioning. IEEE Photonics Technol. Lett., 23 (17). pp. 1246-1248.

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Abstract

The performance of a feedforward carrier frequency recovery algorithm for 16-QAM optical coherent systems is investigated using the QPSK partition scheme. The frequency estimation technique, which employs only a subset of the 16-QAM symbols with the QPSK partition, is demonstrated to be effective when applied prior to the carrier phase recovery. Frequency offset of 10^-1 times the symbol rate is shown to be tolerable at a BER of 10^-3 with combined linewidths symbol duration products of 10^-4.

Item Type: Article
Subjects: Optical Radiation and Photonics
Optical Radiation and Photonics > Optical Comms. And Data
Identification number/DOI: 10.1109/LPT.2011.2158994
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/5260

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