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Recently, tremendous utilization of wireless networks has led to sever scarcity of radio spectrum resources. TV White Spaces (TVWSs) as novel bands enabling Cognitive Radio (CR) technology to improve spectrum resources utilization, have attracted significant standardisation efforts such as IEEE 802.11af, IEEE 802.16h and 802.22. As these heterogeneous networks may operate on the same channels of TVWSs,...
Cognitive Radio is a promised solution to conquer the inefficiency utilization of spectrum resources, which is induced by the traditional fixed spectrum allocation scheme. In cognitive wireless networks, deficient matching between users' demands and spectrum resource may cause communication deterioration while superfluous matching may cause spectrum inefficient utilization. In this context, by considering...
Wireless interference does not necessarily result in the lost of all the information of the desired signal. In this paper, we study the signature allocation in wireless networks by exploiting the retained signal feature under interference. The commonly used node signature includes MAC address and PN sequence. However, both of them take a lot of time to identify the signature when the network scale...
Cloud Computing and Internet of Things are the buzzwords after Web 2.0. Cloud Computing, as a large-scale distributed computing paradigm, is a recent trend in IT that delivers applications as services over the Internet. The Internet of Things (IoT), as the future network of Internet, refers to a dynamic global network infrastructure in which physical and virtual “things” are seamlessly integrated...
A novel software watermarking algorithm SCC (Selected Color Change) based on register allocation is proposed in this paper. The intermediate code when the program is compiled can be used to construct the interfere graph G (V, E). Each vertex in this interfere graph is corresponding with the binary sequence of watermarking message in turns. Then the watermarking is embedded by changing the colors of...
A critical challenge to create effective agent-based systems is allowing them to operate effectively when the design environment is complex, dynamic, and error-prone. Much research has been made on multi-agent system (MAS) in CSCD field, especially on conflict handling, which is not yet well-addressed due to its sophistication. Conflict resolution plays a central role in collaborative design. In this...
Industry has put forward demands on cross enterprises collaboration including various resources sharing. A service-oriented networked numerical control system for sharing information between business partners through the Internet infrastructure is presented in this paper. The paper describes the existing problem of the current numerical control system and brings forth the conception of SoNNC. This...
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