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Location is one of the key technologies in autonomous mobile robot navigation and it is the fundament of the route plan and avoidance obstacle of mobile robot. The paper is concerned with the problem of determining the position of the mobile robots by vision. A kind of infrared landmark was designed, the system software based on Visual C++6.0 and OpenCV was build, and a location system for mobile...
A planar 1R2T wire-driven parallel robot was designed with the aim of realizing rehabilitation training. The effects on the system of the wires' motion and the minimal tension force threshold were researched during the moving platform's expected motion. The principle prototype is developed and some related experiments were done. The kinematics equations were established by the influence coefficients,...
In IEEE 802.11, multicast protocol is based on the basic access procedure of Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA). This protocol does not provide any recovery mechanism for multicast frames. As a result, transmitted multicast frames may be lost due to collisions or errors. Recently, several reliable multicast protocols at MAC layer have been proposed for 802.11. They can...
In this paper, we study reliable multicast at the MAC layer for IEEE 802.11 wireless LANs. In IEEE 802.11, multicast protocol is based on the basic access procedure of carrier sense multiple access with collision avoidance (CSMA/CA). This protocol does not provide any recovery mechanism for multicast frames. As a result, transmitted multicast frames may be lost due to collisions or errors. Recently,...
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