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The phenomenal growth of mobile data demand has brought about increasing scarcity in available radio spectrum. Meanwhile, mobile customers pay more attention to their own experience especially in communication reliability and service continuity on the move. To address these issues, LTE-unlicensed (LTE-U) is considered as one of the latest groundbreaking(More)
This article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. Abstract—Recent advances in micro-electro-mechanical systems (MEMS) technology have boosted the deployment of wireless sensor networks (WSNs). Limited by energy storage capability of sensor nodes, it(More)
In this study, an elevated non-ionic surfactant critical micelle concentration (CMC) in a soil/aqueous system was examined. Experimental measurements have been made of surfactant solubilization of polycyclic aromatic hydrocarbons (PAH) (i.e. fluoranthene and pyrene) in a 5-month aged PAH contaminated soil, as well as surfactant sorption onto soil.(More)
—In this paper, we analyze the user accommodation capabilities of LTE-A systems with carrier aggregation for the LTE users and LTE-A users, respectively. The adopted performance metric is equivalent capacity (EC), defined as the maximum number of users allowed in the system given the user QoS requirements. Specifically, both LTE and LTE-A users are divided(More)
—In this paper, we study the resource allocation in a device-to-device (D2D) communication underlaying green cellular network, where the base station (BS) is powered by sustainable energy. Our objective is to enhance the network sustainability and efficiency by introducing power control and cooperative communication. Specifically, we propose optimal power(More)
—Long Term Evolution-Advanced (LTE-A) standard with Carrier Aggregation (CA) is emerging as a promising technology for 4G mobile communication systems to fulfill tremendous growth of high-data-rate demand. However, in LTE-A systems with CA, the uplink Radio Resource Management (RRM) performance is greatly limited by the insufficient user transmission power(More)
—It is anticipated that future wireless networks will make use of more renewable energy sources, e.g., solar, wind, and hydro, etc., in order to sustain the ever-growing traffic demands, while mitigating the effects of increased energy consumption. The most critical issue of developing a sustainable communications network is how to cost-effectively deploy(More)