12 November 2014 Iterative intersymbol interference cancellation in vestigial sideband Nyquist–subcarrier modulation system
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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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Na Liu, Na Liu, Xue Chen, Xue Chen, Cheng Ju, Cheng Ju, Rongqing Hui, Rongqing Hui, "Iterative intersymbol interference cancellation in vestigial sideband Nyquist–subcarrier modulation system," Optical Engineering 53(11), 116109 (12 November 2014). https://doi.org/10.1117/1.OE.53.11.116109 . Submission:
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