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Cognitive radio (CR) technology is a promising solution to enhance the spectrum utilization by enabling unlicensed users to exploit the spectrum in an opportunistic manner. Since unlicensed users are considered as temporary visitors to the licensed spectrum, they are required to vacate the spectrum when a licensed user appears. Due to the randomness of the appearance of licensed users, disruptions...
With the development of Ethernet technology, Full Duplex Switched Ethernet shows great potential in hard real-time applications since its low cost and high bandwidth. In general, traditional Ethernet cannot provide deterministic service required for hard real-time applications. In this paper, we address a framework, which uses traffic shaper and SCED scheduling policy, to provide deterministic service...
In distributed real-time systems, most of the end-to-end delay fluctuations, especially the delay fluctuations in the network, are bounded provided that the global network traffic loads are manually controlled to be light-weighted. This paper introduces a simple clock synchronization method in distributed real-time systems by using the traffic smoothing technique which is implemented at each end node...
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