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Combined with the Moon exploration, it builds the simulation scenario about the communication between Deep Station and Moon Detector. It analyzes the problems in the deep communication, such as: the big path loss, large delay and intermittent communication. Based on the analysis, it provides the methods to solve the problems and analyzes the effect for using the appropriate measures which can enhance...
Adequate coverage of small-delay defects in circuits affected by statistical process variations requires identification and sensitization of multiple paths through potential defect sites. Existing K longest path generation (KLPG) algorithms use a data structure called path store to prune the search space by restricting the number of sub-paths considered at the same time. While this restriction speeds...
We present a versatile method that enumerates all or a user-specified number of longest sensitisable paths in the whole circuit or through specific components. The path information can be used for design and test of circuits affected by statistical process variations. The algorithm encodes all aspects of the path search as an instance of the Boolean Satisfiability Problem (SAT), which allows the method...
Barrier coverage is a hot issue in wireless sensor networks for its various applications, such as border surveillance and intrusion detection. In wireless sensor networks, it is a very important problem that how to prolong the network life time. In this paper, we focus on the problem that how to prolong the network lifetime for barrier coverage application. Firstly, the surveillance region is divided...
FAST TCP is a newly developed transfer control protocol for future networks with high bandwidth delay product. At present, analyzing the stability of FAST TCP in different networks is an active research area. We establish a group of nonlinear delay differential equations to describe the window adjustment algorithm of FAST TCP and the queuing behavior of routers in single-link multi-source networks...
Most Active Queue Management (AQM) algorithms keep the queue length of the router at a reference value. While when the network traffic is heavy, these algorithms tend to cause high packet loss ratio, large queue oscillations, etc. To address these issues, a new method called Auto-tuning Reference Queue (ARQ) is proposed in this paper, which can be incorporated in any existing AQM algorithms with fixed...
This paper proposes a simple and scalable approach to multisink routing scheme in wireless sensor networks. Wireless sensor network is a rapidly growing discipline, with new technologies emerging and new applications under development. In addition to providing light and temperature measurements, wireless sensor nodes have applications such as security surveillance, environmental monitoring, and wildlife...
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