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Different applications in the network have different sensitivity for the certain QoS parameters. The existing mechanisms cannot modify the packet loss policy exactly according to the needs of QoS parameters. Therefore, the network will not maximize its overall efficiency. This paper proposes a novel cognitive approach for QoS. It classifies the applications by various combinations of the QoS parameters...
In order to support applications with different Quality-of-Service (QoS) requirements in Multimedia communication, this paper designs and investigates a kind of high rate unequal diversity (HRUD) code based on the quasi-orthogonal spacetime block code (QO-STBC) for transmission. This code can achieve high rate, and also provide unequal error protection for multiple layers simultaneously. When transmit...
Ultra wideband (UWB) systems are currently an important wireless infrastructure for efficient short- range communications. To improve the system efficiency while guaranteeing the radio link level quality of services, transmission rate and power of the mobile nodes can be dynamically adjusted by executing an optimization algorithm at the access points (APs). In this paper, we present a cross layer...
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