Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
A directionality based location discovery scheme for wireless sensor networks
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
Range-free localization schemes for large scale sensor networks
Proceedings of the 9th annual international conference on Mobile computing and networking
Location Based Services
Robust distributed network localization with noisy range measurements
SenSys '04 Proceedings of the 2nd international conference on Embedded networked sensor systems
Localization of wireless sensor network using artificial neural network
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
KES'06 Proceedings of the 10th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part II
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In wireless channel environments, location estimation error is inevitable when we use the ROA(Received signal strength Of Arrival) for location estimation. Because of multi-path fading and shadowing the received signal strength can not be obtained appropriately in wireless channel. Especially in NLOS(Non-Line Of Sight) environments, the location estimation error is increased significantly. Therefore, it is required to consider the wireless channel to reduce the estimation error. In this paper, we propose a new location estimation scheme to work precisely in NLOS environments. Reference nodes more than three are used to broadcast their location information continuously and each sensor node sorts the average received signal strength considering shadowing characteristics. We use the residual weighting algorithm[1] for ROA location estimation to obtain higher accuracy. As a result, we can obtain accurate location estimation only using location estimation scheme without any special device for location awareness.