© The Institution of Engineering and Technology
Real-time demonstration of 30 Gbit/s hierarchical star 8-quadrature amplitude modulation optical access system is presented. By incorporating a novel signed-error radius directed equalisation algorithm with a fractionally-spaced filter structure, the receiver supports high-speed hierarchically-modulated signals. The feasibility of the proposal is confirmed by demonstrating downlink coexistence in a 10 gigabit Ethernet passive optical network that conforms to IEEE 802.3av standards.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2015.3942
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Real-time demonstration of 30 Gbit/s hierarchical star 8-QAM passive optical network employing fractionally-spaced signed-error radius directed equalisation