The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper proposes a multiobjective (MO) approach for spectrum sensing control in a cognitive radio-based smart grid. An aggregator that serves power suppliers and residential users has two objectives: maximizing the aggregated benefit of power suppliers and users and minimizing the cost of the cognitive radio system. By increasing the sensing time for the available spectrum, the communication quality...
A multiple-source energy harvesting system is proposed to harvest the thermal and RF energy sources efficiently. The proposed architecture combines a multi-input boost converter with an RF rectifier for DC and AC energy harvesting simultaneously. To achieve the maximum power extraction from an RF rectifier, an equivalent circuit model of the RF rectifier is developed for design consideration. The...
This work demonstrates a fully integrated 24 GHz CMOS receiver for high gain and wireless sensor network. The receiver incorporates a low noise amplifier, double-balanced mixer and an active balun for single to differential. This mixer designs with active load to decrease power dissipation. To increase mixer gain, an inductor is added to eliminate parasitic capacitances at the load of input transistor...
This work presents a novel current-fed parallel-loaded resonant converter that operates under the zero-voltage-switching (ZVS) condition. The circuit configuration is obtained by integrating the class-E resonant inverter into the parallel-loaded resonant converter. With suitably set circuit parameters, only one power switch can exhibit ZVS condition. Thus, high energy conversion efficiency is achieved...
Ternary Content Addressable Memory (TCAM) provides superior table-lookup performance to the conventional search algorithms. However, as word length increases, large-sized TCAM suffers from high power consumption and throughput degradation. This paper presents filter-based dual voltage architecture for long-word TCAM. Without sacrificing throughput and noise immunity, the proposed filter-based dual...
This paper proposes a method to take advantage of the configurable capacitor array to cope with the input voltage instability caused by changes in ambient energy input variation. The proposed energy harvesting circuit can extend its input voltage to a much wider range in theory. Moreover, with our proposed adaptive conversion ratio technique, the input voltage range is not limited by the boundary...
Modern video applications on mobile devices use higher resolutions and frame rates in order to offer better visual quality. Therefore, the power consumption reduction of the decoder in the mobile device is more challenging. In this paper, the reference frames selection algorithm of HEVC encoder for power consumption reduction on the decoder side is proposed. In particular, the power consumption of...
Huge amounts of data can be collected from smart buildings for accurate diagnostics. However, analyzing, storing and processing this data require huge resources as well as advanced software that implements innovative algorithms for accurate smart building diagnostics. This can be very costly for smart buildings owners. Cloud computing can provide a scalable and cost-effective platform to satisfy these...
Due to the increasing demand for local wireless transmissions from proximity-based social or local-content sharing applications, direct communication between user equipment (UE), known as device-to-device (D2D) communication, is regarded as a key technology component in LTE-Advanced. Taking the advantages of short transmission distance, D2D transmission increases resource utilization as well as reduces...
The paper is focused on specific topologies of middle-voltage (MV) power distribution lines with respect to their properties influencing the transmission of communication signals. The following parameters have been measured in the rural-area 22kV distribution network of CEZ Distribuce, a.s.: channel frequency response, interference and background noise. On this basis we have set up models and computed...
Software-Defined Networking (SDN) consists of two planes: the control and the forwarding plane. The control plane is moved out of the switch and into the separate, centralized controller, and is responsible for configuring the switch and programming the paths to be used by data flows. The controller hosting the applications collects information from the OpenFlow switch using the OpenFlow protocol...
We propose a converged access network for servicing various applications in smart buildings and cities. The network convergence aims to share equipment and energy by transmitting bidirectional smart grid data over the fault monitoring channel in the passive optical network systems. The proposed scheme can successfully transfer 100 Mb/s smart meter data over the fault-monitoring channel. It can provide...
Sustainability of the European society and economy will be based on renewable energy and resource efficiency. This implies among others the large scale deployment of nearly Zero-Energy Buildings. The technology is already available and proven; however the large scale uptake of nearly zero-energy building construction and renovation is a big challenge for all market actors. A substantial gap in reliable...
Apache Hadoop is the famous open source cloud computing software in recent years, the performance is much better than before due to lots of researchers' efforts, but its performance still has chance to be improved further because of unsatisfied distributed computing speed and slow response time from heterogeneous Internet's uncertain and dynamic environment. In this paper, coupling emerging GPU computing...
Smartphones have evolved rapidly, and prolonging battery life has become a major challenge; as network services become popular, the demand for streaming grows. Many researchers have proposed energy efficient streaming methods, including bandwidth control and packet scheduling. Such studies have focused on reducing the energy consumption of central processing units (CPUs) and wireless networks; however,...
This paper presents a method for enumerating the feasible load drop compensator (LDC) parameters of on-load tap changer (OLTC) and step voltage regulators (SVRs) in distribution networks utilizing data acquired by SCADA. Deriving the feasible combinations of LDC parameters is becoming important because voltage control is becoming difficult due to the introduction of photovoltaic generation systems,...
One of the fundamental tasks of a smart-grid is achieving an optimal balance between the supplied and consumed energy in the grid. The optimal balance avoids underutilisation as well as overloading of energy sources; minimises the cost of energy transportation and storage; and reduces the price of energy. In this paper we propose a stochastic model for associating energy-suppliers with consumers having...
The increase in renewable energy generators introduced into the electricity grid is putting pressure on its stability and management as predictions of renewable energy sources cannot be accurate or fully controlled. This, with the additional pressure of fluctuations in demand, presents a problem more complex than the current methods of controlling electricity distribution were designed for. A global...
In a smart power distribution system a crucial task is to categorize properly the different types of power consumers in order to optimize the transportation grid as well as the rates and contracts between the power suppliers and consumers. By using intelligent meters and analyzing the behavior of consumers relevant information can be obtained, which may be used for capacity distribution or to have...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.