Implementing wavelength division multiplexing for high speed FDDI network
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Date
2002-01
Authors
Mustafa Al Jada, Muhsen Abdl Mughni
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Abstract
The advance in Wavelength Division Multiplexing (WDM) technology has
tremendously increased the bandwidth of a single fiber optic. For a local and
metropolitan are network (LAN and MAN). FDDI network offers an excellent network
resiliency, good Quality of Services (QoS) and high network throughput. These two
technologies if combined can offer a network with all excellent performance and higher
reliability. By implementing WDM in FDDI will give an approximately N times
network throughput offered by conventional FDDI network within a single channel The
value of N depends on the number of channels that can be supported in the network. The'
number of channels is equal to the number of wavelength used in the network. This
thesis presents and discusses a new network architecture, which combined conventional
FDDI with WDM to decrease the maximum access delay and increase the throughput
over different network configurations. This n~twork is called FDDIIWDM operate over
multiple non-overlapping channels, with each channel operating independently on a
different wavelength. Each station wilLuse an-interfacing unit to operate over multiple
wavelengths channel
The performance of IDDIIWDM network operating over different number of
wavelength channels is evaluated with different network parameters under heavy load
for asynchronous traffic, using discrete event simulator called OMNET ++. Network
parameters used are TfRT, total fiber length, number of active stations, frame size. The
study shows that FDDIIWDM gives a higher throughput (almost IGbps on 10 channels
network) and less delay (- lOOms on 10 channels network) compared to the standard
standard FDDI network. Network performance increasing as the number of channels is
increased. Furthermore, to achieve higher performance network parameters (i.e. TTRT,
total fiber length, number of stations) should be selected carefully.
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Keywords
FDDI network offers an excellent network resiliency, , good Quality of Services (QoS) and high network throughput