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In this paper, we study the problem of cache content placement in the wireless small cell networks. We consider the small base station (SBS) has a cache unit and limited backhaul capacity, and the SBS cache the popular content to serve local users request while reducing the traffic load on the backhaul link. The goal of the cache unit in SBS is to maximum the traffic offloading from backhaul link,...
Secure the cooperative transmission is studied for an automatic repeat request (ARQ)-based wireless network against a jamming-aided eavesdropper. The eavesdropper utilizes the jamming attack to assist its eavesdropping by forcing the legitimate transmitter to retransmit its confidential messages under poor wiretap channel quality. Then, utilizing these retransmission opportunities, the eavesdropper...
Secure wireless communication has always been a hot research topic due to the vulnerabilities associated with wireless channel. Physical layer aspects to secure wireless communication, based on the information-theoretic security and signal processing methods have gained much recognition over the last decade. Specifically, artificial noise (AN) methods are assumed to be good means for providing security...
Security and energy efficiency are two critical metrics in many multiuser networks (e.g. M2M networks, sensor networks and ad hoc networks). In this paper, we try to maximize secure energy efficiency (SEE) by allocating power for those User Equipments (UEs) meeting the security transmission requirements, where SEE is defined as the ratio of the total secrecy throughput to the total transmission power...
To improve driving comfort and provide entertainment services, vehicular communication networks (VCNs) have appeared as an emerging solution, which consists of road-side units (RSUs) and on-board units (OBUs) to distribute multimedia contents. However, as most of OBUs always request the stored contents in the RSUs, how to update the contents in these RSUs when the original changes at its original...
Owing to the Ad Hoc networks' characteristics of centerless, self-organizing, its application range becomes more and more extensive. This paper gives the implementation scheme of building Ad Hoc Networks with OMAP3530-Mini development boards. In Ubuntu develop environment, make suitable embedded kernel for OMAP3530-Mini board, build simplified root file system to achieve the basic functions of file...
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