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We propose a FFT-based universal filtered multicarrier (UFMC) modulation scheme used for datacenter interconnect to support low overhead and agile transmission. The feasibility of this proposed UFMC scheme is experimentally investigated in the IM/DD system. The results have shown that, the UFMC-based datacenter interconnect can achieve great system overhead reduction and support different subband...
In heterogeneous networks of low power Pico Base Station (PBS) overlaid with Macro Base Station (MBS), cell range expansion (CRE) which add a positive bias in PBS for cell association is proposed to offload user equipments (UEs) to PBSs. In this way UEs in CRE region that associated to PBS with weak signal power may experience strong cross-tier interference from MBS. To manage this interference, almost...
With the unrelenting demand for high bandwidth and high spectrum efficiency, intercell interference (ICI) becomes more and more serious and ICI management plays an increasingly important role in mobile cellular networks. This paper overviews the main ICI management schemes employed in the 2nd generation (2G) to the fourth generation (4G) mobile communication systems, such as the basic frequency reuse-n...
User-perceived performance continues to be the most important QoS indicator in cloud-based data centers today. Effective allocation of virtual machines (VMs) to handle both CPU intensive and I/O intensive workloads is a crucial performance management capability in virtualized clouds. Although a fair amount of researches have dedicated to measuring and scheduling jobs among VMs, there still lacks of...
Server virtualization offers the ability to slice large, underutilized physical servers into smaller, parallel virtual machines (VMs), enabling diverse applications to run in isolated environments on a shared hardware platform. Effective management of virtualized cloud environments introduces new and unique challenges, such as efficient CPU scheduling for virtual machines, effective allocation of...
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