A review of routing strategies for optical burst switched networks

Abstract

SUMMARY The exact contribution of this paper is a review of existing state‐of‐the‐art routing strategies for optical burst switched networks developed by researchers to deal with burst contention before it happens. Routing schemes are implemented in space domain, which make them simple and cost effective. Additionally, the paper points out the importance of routing as an effective way to deal with burst contention compared to other solutions. It also underlines the main differences between contention avoidance schemes and contention resolution techniques for optical burst switched networks. We believe that this review will help different optical burst switched researchers involved in the development of route optimization algorithms to control burst contention. Copyright © 2011 John Wiley & Sons, Ltd.

Investigation of phantom circuit benefits for next generation xDSL systems

“…Measured results of FEXT between pairs within the same quads together with models are presented in Figure 4, FEXT between surrounding quads in Figure 5, whereas the FEXT characteristics between pairs and phantom modes from the same quads in Figure 6 and between phantom circuits and surrounding pairs in Figure 7. Measured FEXT characteristics between pairs from different quads together with minimum, maximum and average FEXT model calculated using (2). Moreover, the FEXT levels between pairs within the same quads are lower compared with FEXT between these pairs and phantom circuits, as can be concluded by comparing results in Figures 4 and 6.…”

“…Today, the optical fibers are often combined with existing metallic lines in access networks to provide modern high speed FTTx solutions [1] or with local optical burst switched networks [2] together with high-speed wireless networks [3]. For that reason, the ITU-T has recently initiated a process to develop a new generation of xDSL system called G.fast [4].…”

“…Measured FEXT characteristics between pairs within the same quads together with minimum, maximum and average FEXT model calculated using(2).…”

Improving throughput and effective utilization in OBS networks

“…If a burst arrives at a switch and finds its output trunk is already occupied, then it will be deflected to other trunks connected to that switch. The performance analysis of deflection routing has attracted significant attention [23,24,25,26,22]. Deflection routing performs well under light and medium traffic load but suffers instability under heavy load [27,28,29].…”

Modeling of forward pump EDFA under pump power through MATLAB

“…These models are mostly static. Here we proposed for the first time a MATLAB based dynamic simulink test bed to model forward pump EDFA performance [5][6][7][8][9][10][11][12][13][14]. Here the dynamic models mean a user has a choice to choose the input variables to study its performance.…”