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Geographical load balancing (GLB) is widely established by cloud providers, to exploit the differences in electricity price, local green energy generation, transmission delay and cost etc across geographically dispersed data centers (DCs). With GLB, a cloud provider can achieve reduction of electricity cost or/and bandwidth cost or/and delay cost. However, these objectives are not independent from...
Optical networks have been considered for on-chip communications due to its advantages on bandwidth density, power efficiency and propagation speed over the electrical counterpart. However, the major optical device-micro ring resonator is very sensitive to manufacturing errors and temperature fluctuations, which results in the bandwidth loss or even the failure of optical link. Thus, this paper proposes...
Nanophontonic networks, a potential candidate for future networks on-chip, have been challenged for their reliability due to several device-level limitations. One of the main issues is that fabrication errors (a.k.a. process variations) can cause devices to malfunction, rendering communication unreliable. For example, microring resonator, a preferred optical modulator device, may not resonate at the...
This paper investigates the speed limit of information propagation in large-scale multihop wireless networks, which provides fundamental understanding of the fastest information transportation and delivery that a wireless network is able to accommodate. We show that there exists a unified speed upper bound for broadcast and unicast communications in large-scale wireless networks. When network connectivity...
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