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The increasingly dense deployments of wireless CSMA networks arising from applications of Internet-of-things call for an improvement to mitigate the interference among simultaneous transmitting wireless devices. For cost efficiency and backward compatibility with legacy transceiver hardware, a simple approach to address interference is by appropriately configuring the carrier sensing thresholds in...
When implementing cooperative positioning (CP), there are a number of challenges and issues including the high computation complexity, the high probability of encountering unreliable reference nodes and coordinate uncertainty, which may offset the benefit of CP. To address these challenges, we study the impact of node reliability and propose a cooperative positioning scheme that identifies unreliable...
Due to the limitation of GPS in indoor environment and the rapid growth of Wi-Fi hotspots and mobile devices, indoor Wi-Fi-based positioning has been attracting growing interest. In this paper, we implement a practical and convenient indoor positioning system based on the fingerprint method and Kalman filter on Android mobile devices. This paper not only discusses the positioning algorithms, but also...
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