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Optical Engineering

Iterative intersymbol interference cancellation in vestigial sideband Nyquist–subcarrier modulation system
Author(s): Na Liu; Xue Chen; Cheng Ju; Rongqing Hui
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Paper Abstract

The intersymbol interference caused by dispersion, chirp, and a vestigial sideband filter in intensity modulation and a direct detection single carrier system is analyzed theoretically and numerically. An iterative nonlinear intersymbol interference cancellation technique is proposed and experimentally demonstrated in a 40-Gbps 16-QAM Mach-Zehnder modulator-based vestigial sideband intensity modulation and direct detection half-cycle Nyquist–subcarrier modulation system over a 100-km uncompensated standard single-mode fiber transmission for the first time. The experimental results show that 2.2-dB receiver sensitivity improvement is obtained at the forward error correction limit by using the iterative technique.

Paper Details

Date Published: 12 November 2014
PDF: 7 pages
Opt. Eng. 53(11) 116109 doi: 10.1117/1.OE.53.11.116109
Published in: Optical Engineering Volume 53, Issue 11
Show Author Affiliations
Na Liu, Beijing Univ. of Posts and Telecommunications (China)
Xue Chen, Beijing Univ. of Posts and Telecommunications (China)
Cheng Ju, Beijing Univ. of Posts and Telecommunications (China)
Rongqing Hui, The Univ. of Kansas (United States)

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