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Optical Engineering

Experimental demonstration of half cycle 64-QAM Nyquist-SCM direct-detection optical communication system with data-aided estimation and overlap frequency-domain equalization
Author(s): Danyu Li; Jing He; Jin Tang; Ming Chen; Lin Chen
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Paper Abstract

A half cycle 64-quadrature amplitude modulation (QAM) Nyquist subcarrier modulation (SCM) polarization division multiplexing (PDM) intensity modulation direct detection optical communication system is experimentally demonstrated. At the receiver, training sequences-based channel estimation and an overlap frequency domain equalization method are proposed to enhance the system performance. The experimental results show that the half cycle 64-QAM Nyquist-SCM PDM signal can be transmitted over 43-km standard single-mode fibers with a bit error rate below the forward error coding threshold of 2.4×10−2.

Paper Details

Date Published: 3 December 2014
PDF: 7 pages
Opt. Eng. 53(12) 126101 doi: 10.1117/1.OE.53.12.126101
Published in: Optical Engineering Volume 53, Issue 12
Show Author Affiliations
Danyu Li, Hunan Univ. (China)
Jing He, Hunan Univ. (China)
Jin Tang, Hunan Univ. (China)
Ming Chen, Hunan Univ. (China)
Lin Chen, Hunan Univ. (China)


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