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552 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 2, FEBRUARY 2011 On the Capacity of WDM Passive Optical Networks
 

Summary: 552 IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 59, NO. 2, FEBRUARY 2011
On the Capacity of WDM Passive Optical Networks
Jingjing Zhang, Student Member, IEEE, and Nirwan Ansari, Fellow, IEEE
Abstract--To lower costs, WDM PONs may share the usage of
wavelengths, transmitters, and receivers among ONUs, instead
of dedicating the transmission between OLT and each ONU with
one individual wavelength and one individual pair of transmitter
and receiver. The specific sharing strategy depends on the
network architecture and the wavelength supports of transmitters
and receivers. Different sharing strategies may yield different
achievable data rates of ONUs. In this paper, we make three main
contributions in investigating the impact of the sharing strategy
on the capacity region of a WDM PON. First, we abstract the
data transmission processes in WDM PONs into directed graphs,
where arcs represent wavelengths, transmitters, and receivers,
as well as relations between them. Second, we apply Ford and
Fulkerson's Max-flow, Min-cut Theorem to derive the upper
bound of the capacity region of a WDM PON, and prove that
the upper bound is achievable. Third, in light of these analytical
results, we discuss and compare capacities of some WDM PON

  

Source: Ansari, Nirwan - Department of Electrical and Computer Engineering, New Jersey Institute of Technology

 

Collections: Engineering