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We present Lift, a visible light-enabled finger tracking and object localization technique that allows users to perform freestyle multi-touch gestures on any object's surface in an everyday environment. By projecting encoded visible patterns onto an object's surface (e.g. paper, display, or table), and localizing the user's fingers with light sensors, Lift offers users a richer interactive space than...
Nowadays, cognitive radio technology is an intelligent spectrum sharing technology. In order to ensure the licensed users will not be interfered, cognitive(unlicensed) users must be able to detect the spectrum vacancy fast and reliably. For several existing multi-node detection schemes didn't take the test results' reliability of the cognitive users in different locations into consideration, this...
Spatial reuse in a wireless network can allow multiple communications to proceed concurrently. Usually it seems that the more concurrent transmissions are allowed, the more the aggregate throughput can be sought. Unfortunately, to increase the level of spatial reuse, medium access control (MAC) protocols should either reduce the transmit power or increase the carrier sense (CS) threshold dynamically,...
Interference in the mobile ad hoc networks (MANET) influences performances of the networks badly. In this paper, we propound a new interference-aware probability forwarding (IPF) mechanism to reduce interference. Firstly, IPF is to adjust the carrier sensing threshold, resulting in a higher level of spatial reuse. Secondly, IPF distributes a probability to every node. The probability is related with...
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