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To improve nodes localization accuracy for wireless sensor network (WSN), we propose an optimized selection localization algorithm based on fuzzy c-means (FCM). By cluster analysis, algorithm can figure out the distance data which are far more beyond their true value, and then removes those data. Each three beacon nodes are selected to form groups. The groups are selected based on the ranges between...
Ultra-wideband (UWB) technology has the characteristics which other wireless communication technology can not match to. It combines with wireless sensor network (WSN) technology, using in the environment of coal mine underground, to achieve safety monitoring by WSN node location. Using appropriate location algorithm can not only improve the location accuracy of the calculation can also reduce system...
The transmission power and the reception power are the main source of energy consumption in wireless sensor nodes. Therefore, reducing the amount of consumed power through the transmission and reception processes in the routing protocol will lead to an increase in the lifetime of the wireless sensor network and distribute the consumed power among the wireless sensor nodes. This paper proposes a mechanism...
The range-free localization schemes that demand less device constraints, low cost and low energy consume, have become the main direction of the localization in the large-scale sensor networks. This thesis first introduced the range-free localization schemes Secondly, a novel localization approach is proposed, by seriously analyzing DV-Hop propagation algorithm and ABC algorithm, which is called DHA...
One of the most critical limiting factor for a Wireless Sensor Network (WSN) is its battery life. Therefore, a very desirable feature of WSN would be its rechargability to remain operational over longer period of times. However, the nodes needing recharge may not be accessible. In this paper, we present a battery recharge model in WSNs for inaccessible or hard to access environments, at distances...
Wireless sensor network (WSN) is a wireless network that gathers information from remote area with autonomously configured routing path. We propose a fusion based routing for converge cast in which all sensors periodically forward collected data to a base station. Previous researches dealt with only full-fusion or no-fusion case. Our fusion rate based spanning tree (FST) can provide effective routing...
In this paper we study the problem of estimating the channel parameters for a generic wireless sensor network (WSN) in a completely distributed manner, using consensus algorithms. Specifically, we first propose a distributed strategy to minimize the effects of unknown constant offsets in the reading of the radio strength signal indicator (RSSI) due to uncalibrated sensors. Then we show how the computation...
A study on robustness of location determination techniques using wireless sensor network (WSN) is presented in this manuscript. The location estimation technique used by the wireless sensor network is based on location fingerprinting technique. Theoretically, the robustness of the location estimation depends on the availability of the number of sensor nodes in the system. The degradation of location...
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