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Software-Defined Networking (SDN) is an innovational network architecture introduced a couple of years ago. It gives network administrators the ability to directly control the whole network by programming on a centralized controller, without manually configure each device. However, new security challenges come out with SDN development. One significant challenge is to design a secure firewall specifically...
Hybrid digital-analog (HDA) architectures have been widely developed for efficient digital transmission of analog speech, audio or video data. By considering the advantage of both digital and analog components, HDA systems gain better performances than purely analog and digital schemes in a wide range of channel conditions. However, HDA systems described in previous works are mostly designed for continuous-valued...
Emerging information-centric networking architectures drives a wider focus of content caching mechanisms. Most recent efforts have been attempting for server and user friendliness, i.e., reduction in content-server load and content-delivery time. Those solutions require the prior knowledge of cache state and content popularity exchanged among routers. Challenging tasks are pushed to routers since...
The integration of multihop capabilities in orthogonal frequency-division multiple access (OFDMA) cellular systems through the deployment of relay stations is believed to be one of the promising solutions for the next-generation wireless communications. In this paper, four fixed resource allocation schemes with different partition and reuse factors are discussed. They are 7-part partitioning (PF7),...
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