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Radio links in wireless body area networks (WBAN) experience highly time-varying attenuation because of topology instability. On the other hand, real-time, reliable, energy efficient and interference-aware communication protocol is the most important requirements of many WBAN applications. Since the channels quality is not stable, there is no any fixed optimal power level which meets all the requirements...
WSN (Wireless sensor network) comprises of large number of tiny, inexpensive, computationally capable and energy constrained nodes that find use in various surveillance and monitoring applications. Data sensed by these nodes is transfused to the base station using various routing procedures. The pivotal issue in wireless sensor networks is of lifetime and energy conservation as the sensor nodes' energy...
Monitoring and controlling difficult terrains in a timely manner are a major application area of Wireless Sensor Networks (WSN). Usually such areas are unreachable rendering battery change of sensor nodes infeasible. So data gathering protocols should be energy efficient to elongate WSN lifetime. We propose a data gathering method coined as FCM-DS-ACO which uses fuzzy c means (FCM) to cluster the...
In this paper, crowdsourcing based wireless sensor networks (WSNs) with rechargeable sensors are used for target localization. For rechargeable sensors, the state of charge (SOC) is one of the key factors that decides the sensors' energy cost for the localization task. To conserve limited resources, the fusion center (FC) employs an optimal sensor selection scheme obtained through an auction design...
Sensors are widely in use because of low cost and multi functionality. Cognitive radio is nothing but intelligence in some form. Cognitive radio is a form of wireless communication in which a transceiver can detect the availability of channels. Wireless sensor networks are widely being deployed but some of the challenges that arise in wireless sensor network can be overcome by using cognitive radio...
One of the most important issue that must be addressed in designing communication protocols for wireless sensor networks (WSN) is how to save sensor node energy while meeting the needs of applications. Recent researches have led to new protocols specifically designed for sensor networks where energy awareness is an essential consideration. Internet of Things (IoT) is an innovative ICT paradigm where...
A smart environment system should automatically control the devices according to the sensing information and users' requirements so as to keep the environmental elements (e.g., temperature, light) within the desired range. System control with minimum power is one key issue in such a system. In this paper, we propose a multi-dimension model for system control. In this model, each environmental element...
The demand for high throughput at low power consumption requires spectrum efficient as well as energy efficient design in next generation wireless networks. However, spectrum efficiency (SE) and energy efficiency (EE) can not be improved simultaneously. To this aim, in this work, the EE-SE trade-off issue is investigated in a cooperative cognitive radio network (CCRN). The secondary users (SUs) either...
Effective Building Energy Management Systems (BEMS) are essential for future smart grids with implemented demand-response concept. Building Automation and Control Systems (BACS) can gather information about power and energy consumption as well as control loads in buildings and dynamically interact with the smart grid. A demand value is crucial in organizing this kind of the BEMS with an active demand...
This paper proposes an innovative strategy to optimize the energy metering in large and energy-consuming plants such as industrial flour mills. The proposed solution deals with ISO 50001 implementation which represents a critical challenge for many companies because the benefits due to improvements in energy management could be potentially canceled by the costs of an Energy Management System (EnMS)...
Wireless sensor networks (WSN) used to watch changes in an environment of a given field. Coverage, communication and connectivity of the network are the most fundamental challenges in WSN. Sensor nodes are mostly battery operated and expected to work for a longer time without replacing the batteries. The measure of the efficiency of a network usually defined about how efficient in sensing the given...
Energy conservation and load balancing of the sensor nodes are the important issues considered in the design of Wireless Sensor Network (WSN). By using clustering approach, the energy consumption of nodes in the network can be decreased thereby increasing its lifetime. In various multi-hop cluster-based routing protocols, nodes nearer to the Base Station (BS) exhaust their energy quickly than other...
Security and energy are two most aspect in WSN. The privacy is also significant features in wireless sensor network (WSN). We have many security routing protocols in wireless sensor network. But the main goal is to provide security with less energy consumption. This paper we are going to demonstrate energy efficiency and security scheme in contradiction of power draining occurrence especially renunciation...
Wireless sensor based communication system is an ever growing sector in the industry of communication. Wireless infrastructure is a network that enables correspondence between various devices associated through a infrastructure protocol. In WSN enhancing the life span of network depends on the energy dissipation of the sensor devices. Reducing the energy dissipation of sensor devices will improve...
We study energy-efficient power allocation for the sensing-based spectrum sharing (SBSS) of the cognitive users operating in an uplink multiuser MIMO mode. Different from the existing energy-efficient designs that consider system-wise energy efficiency, we consider user-wise energy efficiencies and optimize them in a Pareto sense. However, due to the non-convexity of the formulated problem, finding...
In this paper, we investigate the major trade-offs that relates to the energy efficiency in cognitive radio networks. We address five main trade-offs (QoS, network architecture, primary user interference, fairness and security) that are vital since they affect all the components of cognitive radio network's operability, design and implementation. The relationship between these trade-offs and how they...
In remote healthcare monitoring and care delivery, obtaining the right information at the right time is critical. For these systems, designing an efficient MAC protocol that is able to meet the challenges on network quality such as throughput, latency, data reliability and energy saving is an imperative task. This paper presents a polymorphic, multi-behavioral MAC protocol called PEAM (Polymorphic,...
Target Tracking issue in wireless sensor networks (WSNs) has gained much attention. Network lifetime and tracking accuracy are the important measurements for the target tracking mechanisms. However, most of approaches pursue one at the cost of the other. In some applications, the best tracking accuracy is not necessary to achieve if tracking quality is fixed by application users. This paper proposes...
A dual-hop cognitive (secondary) relaying system incorporating collaborative spectrum sensing to opportunistically switch between data transmission and energy harvesting is introduced. The secondary relays, first scan the wireless channel for a primary network activity, and then convey their reports to a secondary base station (SBS). Afterwards, the SBS, based on these reports and its own estimation,...
Wireless Sensor Network (WSN) is composed of high density sensor nodes randomly deployed to monitor a specific phenomenon. Due to high density the data sensed by these nodes is highly redundant and spatially correlated. Sensor node is usually battery operated. Hence, power conservation takes on additional importance. Traditional deployment for WSN is self organizing neighboring discovery on randomly...
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