As cloud applications are becoming increasingly deadline-sensitive, meeting desired QoS requirements is more critical, especially in shared and heterogeneous clusters. It has been shown that a few slow tasks, called stragglers, could significantly adversely impact job execution times. Moreover,...
Network Virtualization is an essential technology for future networks and Elastic OpticalNetworks (EONs) are considered as a revolutionary improvement over traditional opticalnetworks. It is always a challenge to find a better way to solve the Virtual Optical NetworkEmbedding (VONE) problems for...
Data-intensive jobs, e.g., financial analysis and log mining, need to process huge amount of data, and those jobs are suitable to run on the cloud environment, which provides computing and storage resources by connecting thousands of servers. A job splits a dataset into multiple data chunks, and...
Thesis Statement: Cost-effective switching and spectrum utilization efficiency have become critical design considerations in optical networks. This dissertation provides in-depth exploration of these important aspects, and proposes effective techniques for low-cost switching architectures and...
Limited reconfigurable optical add/drop multiplexers (L-ROADMs) can significantly reduce the cost of metro optical wavelength-division multiplexing (WDM) networks by limiting the range of wavelengths that can be accessed at each node. In this work, we investigate the impact of wavebanding in...
All-optical networks, in which the electrical regeneration bottlenecks are removed, are seen as the next-generation backbone networks. Any link failure in these high speed environments, if not dealt with promptly, is catastrophic and can cause the loss of gigabits of data. While techniques to...
In an effort to reduce the bottleneck between electronic sources and high speed wavelength channels, optical time division multiplexing is proposed. In such Time-Wavelength Switched Networks (TWSNs), time on every wavelength is slotted and the Time-Wavelength-Space-Routers (TWSRs) are configured...
Energy-Efficient QoT-Guaranteed Routing in Translucent Optical NetworksOptical technologies based on Wavelength-Division Multiplexing (WDM) in the backbone of the Internet are becoming the dominant technology. Previously, limited wavelength resources were the primary obstacle in optical networks....
Abstract of ThesisThe Evaluation of a Radio Frequency Link (V and W Bands) for Satellite CommunicationsThis paper evaluates a two-way geostationary satellite communications link, operating in the V and W bands of the radio frequency spectrum (50 to 111 GHz). Currently, the V&W; band is not yet...
Wavelength Division Multiplexing (WDM)-based optical networks are ideal candidates for core backbone networks because of their ability to carry large amounts of traffic. Optical amplification has increased the reach of long-haul optical links. Nevertheless, it is impossible today to construct a...