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.
Localization technology is the basis of practical applications of wireless sensor networks (WSNs). An improved localization algorithm for wireless sensor networks was proposed to reduce hop distance error and solve the premature convergence problem for the hybrid localization algorithm of DV-Hop and Bat (BADV-Hop). Based on the vector routing localization mechanism, an optimization method was designed...
In order to minimize energy dissipation and maximize network lifetime, a new energy-efficient algorithm (LEACH-WM) based on weight and intra-cluster multi-hop mechanism is proposed in this paper. In the steady phase of LEACH-WM, a weight relay is elected in the cluster according to member nodes' residual energy and their distances away from the base station (BS).Cluster head sends aggregation data...
WSN localization methods play important roles in various applications, because many applications involve the need of localization. To propose an accurate localization method, this paper focuses on calculating the number of hops and utilizes the multidimensional scaling analysis to estimate the coordinates of unknown nodes. Then, the method of multi-power transmission is used to refine the coordinates...
In this letter, we consider simultaneous wireless information and power transfer (SWIPT) in multirelay-assisted two-hop relay system, where multiple relay nodes simultaneously assist the transmission from source to destination using the concept of distributed space-time coding. Each relay applies power splitting protocol to coordinate the received signal energy for information decoding and energy...
Due to energy limit of sensors, lifetime maximization of wireless sensor network is one of the key problems protocol design. Low Energy Adaptive Clustering Hierarchy (LEACH) is a well known routing protocol in WSN, but its performance decreases sharply with increase of the network scale. To solve this problem, we introduce an improved LEACH routing protocol to balance energy consumption among the...
In this paper, we use the software-defined radio platform GNU Radio + USRP to implement a GSM channel smart sensing system by using the wireless channel smart sensing strategy based on sequence characterizes matching method. We adopted multi-step to design the system from physical layer. First, we rough scan the signal intensity of GSM channels, then select the channel that has better signal intensity...
As complex and powerful systems, mobile robots can be used to cooperate with WSNs, whose nodes have restricted resource. Considering the vulnerability of traditional architecture for robot cooperated sensor networks deployment and perception with respect to adaptability and expandability, an original concept of HEDPA, which means hierarchical expanding deployment and perception architecture, is proposed...
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.