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Device-to-Device (D2D) communication is one of the technologies for next generation communication system. Unlike traditional cellular network, D2D allows proximity users to communicate directly with each other without routing the data through a base station. In this paper, we propose a resource allocation scheme for energy efficiency (EE) optimization in cellular network with overlaying D2D communication...
In this paper, we investigate joint antenna selection and spatial switching (SS) for energy efficiency (EE) optimization in a multiple-input multiple-output (MIMO) simultaneous wireless information and power transfer (SWIPT) system. A practical linear power model taking into account the entire transmit-receive chain is accordingly utilized. The corresponding fractional-combinatorial and non-convex...
In this paper, we provide joint subcarrier assignment and power allocation schemes for quality- of-service (QoS)-constrained energy-efficiency (EE) optimization in the downlink of an orthogonal frequency division multiple access (OFDMA)-based two-tier heterogeneous cellular network (HCN). Considering underlay transmission, where spectrum- efficiency (SE) is fully exploited, the EE solution involves...
In this paper, we address the energy efficiency (EE) optimization problem for SWIPT multiple-input multiple-output broadcast channel (MIMO-BC) with time-switching (TS) receiver design. Our aim is to maximize the EE of the system whilst satisfying certain constraints in terms of maximum transmit power and minimum harvested energy per user. The coupling of the optimization variables, namely, transmit...
In current embedded mobile systems design, the application processor (AP) is often woken up to service interrupts and user requests. However, this kind of wakeups from sleep is very expensive in terms of battery usage. In the observation that the operating system/driver workloads are very light-weight, in this paper we propose the Offload Co-Processor (OCP) SoC architecture. In the OCP SoC design,...
The objective of this work is to evaluate the viability of implementing workload-aware dynamic power management schemes on a many-core platform, aiming at reducing power consumption for high performance computing (HPC) application. Two approaches were proposed to achieve the desired target. First approach is an off-line scheduling scheme where core voltage and frequency are set up beforehand based...
We propose a consumption scheduling mechanism for home area load management in smart grid using integer linear programming (ILP) technique. The aim of the proposed scheduling is to minimise the peak hourly load in order to achieve an optimal (balanced) daily load schedule. The proposed mechanism is able to schedule both the optimal power and the optimal operation time for power-shiftable appliances...
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