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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