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DSP algorithms for recovering single-carrier Alamouti coded signals for PON applications

Published version
Peer-reviewed

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Authors

Faruk, MS 
Louchet, H 
Erkılınç, MS 
Savory, SJ 

Abstract

Alamouti space-time block code (STBC) combined with a simple heterodyne coherent receiver enables phase diverse coherent detection without any optical polarization tracking. While such a system consisting of only a 3-dB coupler and a single balanced photodiode has been recently demonstrated using orthogonal frequency-division multiplexed (OFDM) signals, herein we report the first application to single-carrier systems. Applicability of such technique for single-carrier systems is not straightforward since specialized digital signal processing (DSP) algorithms are required for data recovery. In this paper, we address the implementing issues and DSP algorithms applicable for single-carrier (SC) Alamouti STBC based simplified heterodyne receivers. Polarization-insensitive operation of the proposed scheme and its performance are verified by means of simulation for a 12-Gbits/s quadrature phase-shift keying (QPSK) transmission system.

Description

Keywords

0906 Electrical and Electronic Engineering, 0801 Artificial Intelligence and Image Processing

Journal Title

Optics Express

Conference Name

Journal ISSN

1094-4087
1094-4087

Volume Title

24

Publisher

Optical Society of America
Sponsorship
European Commission (608099)
Engineering and Physical Sciences Research Council (EP/J017582/1)
European Union (Project ICONE (Grant ID: 608099)), Engineering and Physical Sciences Research Council (UNLOC (Grant ID: EP/J017582/1))