Results 1 - 10 of 295

Indoor localization without the pain

by Krishna Chintalapudi, Anand Padmanabha Iyer, Venkata N. Padmanabhan - In Proc. ACM MobiCom Conference , 2010
"... While WiFi-based indoor localization is attractive, the need for a significant degree of pre-deployment effort is a key challenge. In this paper, we ask the question: can we perform indoor localization with no pre-deployment effort? Our setting is an indoor space, such as an office building or a mal ..."
Abstract - Cited by 102 (0 self) - Add to MetaCart
While WiFi-based indoor localization is attractive, the need for a significant degree of pre-deployment effort is a key challenge. In this paper, we ask the question: can we perform indoor localization with no pre-deployment effort? Our setting is an indoor space, such as an office building or a

Zero-Configuration, Robust Indoor Localization: Theory and Experimentation

by Hyuk Lim, Lu-chuan Kung, Jennifer C. Hou, Haiyun Luo
"... With the technical advances in ubiquitous computing and wireless networking, there has been an increasing need to capture the context information (such as the location) and to figure it into applications. In this paper, we establish the theoretical base and develop a localization algorithm for buil ..."
Abstract - Cited by 70 (0 self) - Add to MetaCart
for building a zeroconfiguration and robust indoor localization and tracking system to support location-based network services and management. The localization algorithm takes as input the on-line measurements of received signal strengths (RSSs) between 802.11 APs and between a client and its neighboring APs

Wireless Indoor Positioning Algorithm Based on PCA

by H. L. Li, W. Quan, Z. H. Qian, G. Ji
"... Abstract—The use of WLAN (Wireless Local Area Networks)for indoor localization is an important content in the field of mobile Internet, usually based on the Received Signal Strength(RSS) and the fingerprinting algorithms. Due to the characteristics of the RSS, environmental factors have great influe ..."
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Abstract—The use of WLAN (Wireless Local Area Networks)for indoor localization is an important content in the field of mobile Internet, usually based on the Received Signal Strength(RSS) and the fingerprinting algorithms. Due to the characteristics of the RSS, environmental factors have great

Joint optimal power control and beamforming for wireless networks with antenna arrays

by Farrokh Rashid-farrokhi, Ros Tassiulas, K. J. Ray Liu, Senior Member - in Proc. IEEE Global Telecommunications Conf. (GLOBECOM’96 , 1996
"... Abstract — The interference reduction capability of antenna arrays and the power control algorithms have been considered separately as means to increase the capacity in wireless communication networks. The minimum variance distortionless response beamformer maximizes the signal-to-interference-and-n ..."
Abstract - Cited by 128 (22 self) - Add to MetaCart
Abstract — The interference reduction capability of antenna arrays and the power control algorithms have been considered separately as means to increase the capacity in wireless communication networks. The minimum variance distortionless response beamformer maximizes the signal

The Testing of Wireless Local Area Network with ANN

by unknown authors
"... Mobile devices can be connected to the Internet via wireless local area networks. These devices need to obtain sufficient signal strength at every point in an indoor area to maintain the Internet connection. This condition determines the performance of the wireless network. However, the performance ..."
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Mobile devices can be connected to the Internet via wireless local area networks. These devices need to obtain sufficient signal strength at every point in an indoor area to maintain the Internet connection. This condition determines the performance of the wireless network. However, the performance

Accuracy characterization for metropolitan-scale wi-fi localization

by Yu-chung Cheng, Yatin Chawathe, Anthony Lamarca, John Krumm - In Proceedings of Mobisys 2005 , 2005
"... Location systems have long been identified as an important component of emerging mobile applications. Most research on location systems has focused on precise location in indoor environments. However, many location applications (for example, location-aware web search) become interesting only when th ..."
Abstract - Cited by 143 (6 self) - Add to MetaCart
evaluate the feasibility of building a wide-area 802.11 Wi-Fi-based positioning system. We compare a suite of wireless-radio-based positioning algorithms to understand how they can be adapted for such ubiquitous deployment with minimal calibration. In particular, we study the impact of this limited

Data Fusion Improves the Coverage of Wireless Sensor Networks

by Guoliang Xing, et al. , 2009
"... Wireless sensor networks (WSNs) have been increasingly available for critical applications such as security surveillance and environmental monitoring. An important performance measure of such applications is sensing coverage that characterizes how well a sensing field is monitored by a network. Alth ..."
Abstract - Cited by 33 (7 self) - Add to MetaCart
. Although advanced collaborative signal processing algorithms have been adopted by many existing WSNs, most previous analytical studies on sensing coverage are conducted based on overly simplistic sensing models (e.g., the disc model) that do not capture the stochastic nature of sensing. In this paper, we

Received Signal Strength Indicator-Based Adaptive Localization Algorithm for Indoor Wireless Sensor Networks

by Yong Tian, Zhenan Tang, Yan Yu , 2013
"... Abstract: Solutions for indoor localization have become more critical with recent advancement in context and location-aware technologies. When wireless sensor network (WSN) used in complex indoor environment, great propagation loss will be caused and it is very difficult to estimate adaptively the l ..."
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the location of target nodes when environment changed. In this paper, an indoor adaptive localization algorithm based on received signal strength indication (RSSI) for wireless sensor networks is proposed. The algorithm utilizes the RSSI of radio signals radiating from two other fixed nodes to generate

RSSI-based Localization Algorithms using Spatial Diversity in Wireless Sensor Networks

by Safa Hamdoun, Abderrezak Rachedi, Abderrahim Benslimane
"... Many localization algorithms in Wireless Sensor Networks (WSNs) are based on received signal strength indication (RSSI). Although they present some advantages in terms of complexity and energy consumption, RSSI values, especially in indoor environments, are very unstable due to fading induced by sha ..."
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Many localization algorithms in Wireless Sensor Networks (WSNs) are based on received signal strength indication (RSSI). Although they present some advantages in terms of complexity and energy consumption, RSSI values, especially in indoor environments, are very unstable due to fading induced

Ad-hoc wireless network coverage with networked robots that cannot localize

by Nikolaus Correll, Jonathan Bachrach, Daniel Vickery, Daniela Rus - in Proc. IEEE ICRA , 2009
"... Abstract — We study a fully distributed, reactive algorithm for deployment and maintenance of a mobile communication backbone that provides an area around a network gateway with wireless network access for higher-level agents. Possible applica-tions of such a network are distributed sensor networks ..."
Abstract - Cited by 10 (1 self) - Add to MetaCart
Abstract — We study a fully distributed, reactive algorithm for deployment and maintenance of a mobile communication backbone that provides an area around a network gateway with wireless network access for higher-level agents. Possible applica-tions of such a network are distributed sensor networks
Results 1 - 10 of 295