Zhangdui Zhong

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In recent years, cloud computing has been widely recognized by both industry and academia as the next generation computing infrastructure. Compared with traditional IT infrastructure, it can offer many advantages such as scalability, agility, economic efficiency and so on. Meanwhile, with the rapid deployment of broadband wireless networks and increasing(More)
A novel cluster-head selection and update algorithm “Typebased Cluster-forming Algorithm (TCA)” is proposed, which outperforms both the lowest node ID (LID) and the Weighted Clustering Algorithm (WCA) in the ad hoc network scenario considered. The system’s performance is investigated in a scenario, when the 50 communicating nodes belong to three different(More)
High-speed railway (HSR) brings convenience to peoples' lives and is generally considered as one of the most sustainable developments for ground transportation. One of the important parts of HSR construction is the signaling system, which is also called the “operation control system,” where wireless communications play a key role in the(More)
Cuttings are widely used in high-speed railway (HSR) transportation to ensure the flatness of rails. The special structure of cuttings results in rich reflection and scattering, and creates dense multipath components. This paper presents a series of measurements of the propagation channel at 930 MHz conducted along the “Zhengzhou-Xi’an” HSR of China, to(More)