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.
The wireless sensors deployed at the highway can ensure the safety of the traveling vehicles. However, the ribbon deployed wireless sensor network in the roadside infrastructure can easily to generate energy hole. Cooperative communication between sensors and vehicles is an effective way to improve this situation and reduce the energy consumption of the sensors. A cooperative relay selection algorithm...
In this paper, we aim to minimize in-body sensor node energy consumption and to prolong the network lifetime by utilizing a relay strategy based on our proposed flexible quality of service (QoS) radio frequency communication module and advanced In-to-out body path loss (PL) model. A selection algorithm is derived and investigated in which the relay nodes with lower energy consumption and minimum distance...
Energy efficient wireless communications have recently received much attention, due to the ever-increasing energy consumption of wireless communication systems. In this paper, we propose a new energy-efficient cooperative relaying scheme that selects a subset of relays before data transmission, through proactive participation of available relays using their local timers. We perform theoretical analysis...
Opportunistic forward techniques can improve the energy efficiency of wireless multi-hop networks by exploiting multiuser diversity. Opportunistic forward schemes generally integrate the functions of routing and MAC layers; nevertheless, most of the works focus on the design of routing protocol while assuming an energy efficient MAC layer. However, due to the unreliable links among the source node...
Some of the vital issues that need to be addressed in wireless sensor network (WSN) based applications are improving the network lifetime without replacing the batteries of node and diminution of energy imbalanced hotspots in the network. Many protocols are proposed for energy efficient cluster based sensor network. In this paper, energy efficient Adaptive number of Frames per Round (AFR) protocol...
Distributed cooperative relaying is an attractive method to combat fading in wireless communications because of its performance advantages, simplicity, scalability, and low overhead. In [1], the spectral efficiency of two previously proposed distributed relaying strategies is investigated: Timer-based Best-Select relaying and M-group Dis-STBC All-Select relaying. From the perspective of spectral efficiency,...
Our goal is the improvement of the node activity rate in solar-powered wireless sensor networks. We consider the application of a cooperative transmission scheme that uses a relay node when a node sends data to reduce the consumption of energy of the entire network. However, if we do not consider the variations in energy harvesting, the node activity rate declines during nighttime. In this paper,...
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.