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Received signal strength (RSS) based fingerprinting localization technique has been researched widely for the indoor location based services (LBSs) in recent years. However, the accuracy performance suffers from the time-varying characteristic of RSS due to the multi-path and shadow effect. In this paper, we propose a fingerprinting positioning system based on power delay profile (PDP). The system...
Several protocols have been proposed to improve data accessibility and reduce query delay in MANETs. Some of these proposals have adopted the cooperative caching scheme, allowing multiple mobile hosts within a neighborhood to cache and share data items in their local caches. Cross-layer optimization has not been fully exploited to further improve the performance of cooperative caching in these proposals...
A minified UHF Tag antenna with two meander dipoles and a match network is proposed and simulated. The antenna is printed with thin copper on a polyimide substrate of 50 um thickness. The dimensions of the antenna are 65 mm in width and 48 mm in length. The simulation results show that the impedance bandwidth is 66 MHz and the radiation efficiency within the bandwidth is over 80%, and the antenna...
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