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Mobile cloud computing provides a cloud-based platform for executing mobile tasks remotely in the cloud. It becomes a promising way for extending the limited mobile resource as well as reducing the expensive mobile cost. In this paper, we consider a mobile application with multiple tasks, each with a certain amount of work and input/output data. Our objective is to minimize the mobile cost due to...
Heterogeneous cellular networks have emerged to be the primary solution for overwhelming traffic demands. This study addresses the architecture optimization of multi-tier open access downlink heterogeneous cellular networks to achieve the maximum network spatial throughput under practical constraints on the network deployment cost and traffic loads of individual tiers. In particular, with the use...
Effectively use of intelligent transport system (ITS) can not only improve vehicular safety but also enhance the efficiency of current transport system and driving comfort. The key point of ITS is how vehicles communicate with each other, which means we need a set of communication protocols to facilitate moving vehicles. For this reason, IEEE developed WAVE (Wireless Access in Vehicular Environment)...
Recently, orthogonal frequency division multiplexing (OFDM) has become a popular technique for transmission of signals over wireless channels. Also, multiple-input multiple-output (MIMO) is one of the most promising technologies for assisting fading and improving link reliability without sacrificing bandwidth efficiency. The combination of OFDM and MIMO seems to be the key technology in next generation...
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