Abstract

The quality of service of 100 Gbps orthogonal frequency division μltiple access passive optical networks (OFDMA-PONs) performing dynamic bandwidth allocation is evaluated. New medium access control protocols and frame formats have been developed, exhibiting hybrid OFDMA/time division μltiple access scheduling, for capacity enhancement and granular bandwidth allocation. The sequential dynamic subcarrier allocation algorithms allow the network optical line terminal to grant the optical network units (ONUs) bandwidth using both status and non-status based algorithm. Siμlations of a 100 Gbps network with 256 ONUs, 256 subcarriers and 40 km extended-reach demonstrate best network throughputs of 87.5 Gbps and 3 ms packet delays for high priority service classes, even at maxiμm ONU load. In addition, high service level agreement (SLA) ONUs exhibit 1.56 Gbps maxiμm capacity and 48.82 kbps granularity.

© 2013 IEEE

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