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Industrial wireless networks (IWNs) are characteristically different from traditional wireless systems due to harsh radio frequency (RF) environments and applications that impose high real-time and reliability constraints. One of the promising technologies for enabling IWNs is the cognitive radio. This paper designs a novel subcarrier modulation-based cooperative spectrum sensing (SMCSS) scheme for...
Time synchronization plays an important role in Industrial Wireless Control Networks (IWCNs). To meet the demand for IWCNs, this paper presents a novel mixed time synchronization method, which combines the characteristics of the centralized time synchronization methods and the distributed time synchronization methods. The method could synchronize the network nodes to a given time source. And the models...
A key to efficient mobile communication networks is an efficient utilization of scarce resources, which includes mechanisms for resource allocation and interference management. In practice, time sharing methods such as Time Division Multiple Access (TDMA) are often exploited to create orthogonal connections. TDMA schemes however are inflexible and not suitable for decentralized implementation. In...
In this paper we formulate a novel utility-cost optimization problem for routing and power control in multi-hop wireless networks. As the problem is non-convex and non-separable (no assumption on high or low SINR regime), we approach it by solving a sequence of convex approximation problems. If the initial convex approximate is feasible, it is shown that the solution sequence converges to a KKT point...
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