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	1. A Novel Pilot Scheme with Guard Subcarriers to Improve the Accuracy of the Phase Compensation in CO-OFDM Systems
	ZHENG Guoli,MA Jianxin,ZHANG Yansong
	Information Science and System Science 09 December 2014
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	Abstract:CO-OFDM is sensitive to phase noise (PN), which will cause common phase error (CPE) and intercarrier interference (ICI). Pilots are used to compensate for the PN. However, the phase of the comb-type pilot subcarriers (PSs) also suffers the ICI from the adjacent data-bearing subcarriers in real systems. In terms of this issue, a low-complexity comb-type pilot scheme is proposed in CO-OFDM system for testing the impact of the ICI by adding blank subcarriers (also guard subcarriers or GSs) at both sides of PSs. By increasing the number of GSs, the ICI on PSs can be reduced and a better performance of the phase compensation is achieved. The proposed pilot scheme with GSs is employed in a typical 20Gbit/s QPSK CO-OFDM system, and the simulation results show that after 50km standard single-mode fiber (SSMF) transmission in conventional conditions, our scheme can reduce the error vector magnitude (EVM) by about 3%.
	TO cite this article:ZHENG Guoli,MA Jianxin,ZHANG Yansong. A Novel Pilot Scheme with Guard Subcarriers to Improve the Accuracy of the Phase Compensation in CO-OFDM Systems[OL].[ 9 December 2014] http://en.paper.edu.cn/en_releasepaper/content/4622766


	2. On Convex Formulation of Linear Constrained Model Predictive Control
	LI Ji-Wei, LI De-Wei, XI Yu-Geng
	Information Science and System Science 02 December 2014
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	Abstract:This paper develops a model predictive control strategy for stochastic linearsystems with both multiplicative and additive uncertainty. The random natureof the system is characterized by a sequence of polytopes, in which thestate-transition matrix evolves with certain probability. Design of the polytopesrelies on random samples of the transition matrix, and computation of thepolytopes is efficient through a convex optimization. On the basis of thepolytopic description, linear probabilistic constraints can be transformedinto deterministic ones and be solved in low computation burden. The proposed MPCalgorithm ensures probabilistic constraints and closed-loop stability. The resultsare illustrated by a numerical example.
	TO cite this article:LI Ji-Wei, LI De-Wei, XI Yu-Geng. On Convex Formulation of Linear Constrained Model Predictive Control[OL].[ 2 December 2014] http://en.paper.edu.cn/en_releasepaper/content/4621383

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	3. Global adaptive output feedback control for hysteretic actuators failure compensation of a class of nonlinear systems
	LIN Yan, ZHANG Xu
	Information Science and System Science 23 November 2014
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	Abstract:We consider theproblem of global output feedback stabilization for a class ofnonlinear time-delay systems. Compared with the previous works, theclass of nonlinear time-delay systems is greatly enlarged. Based ona dynamic gain scaling technique, an adaptive output feedbackcontroller independent of the time-delay is explicitly constructed.By introducing a new scaled Lyapunov function and employing theLyapunov-Krasovskii method, it is proved that global stabilizationof the nonlinear time-delay systems can be achieved by the proposedscheme.
	TO cite this article:LIN Yan, ZHANG Xu. Global adaptive output feedback control for hysteretic actuators failure compensation of a class of nonlinear systems[OL].[23 November 2014] http://en.paper.edu.cn/en_releasepaper/content/4619479


	4. Routing Survey for mobile opportunistic networks
	Gao Zehua,Yang Ting,Chen Yu
	Information Science and System Science 22 November 2014
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	Abstract:With more and more mobile devices are connected into the network, the mobile network presents the following features: intermittent connectivity is frequent and mobile nodes can communicate with each other even if a route connecting them did not previously exist. So the mobile opportunistic networks emerged. The communications in mobile opportunistic networks take place on the establishment of opportunistic contacts among mobile nodes, without availability of end-to-end message routing paths. To ensure source nodes connect with destination quickly and send message successfully in the mobile opportunistic networks, we studied six different routing protocols for transmitting message in the mobile opportunistic networks and took analysis about their advantages and disadvantages.
	TO cite this article:Gao Zehua,Yang Ting,Chen Yu. Routing Survey for mobile opportunistic networks[OL].[22 November 2014] http://en.paper.edu.cn/en_releasepaper/content/4617899


	5. Duality Principle between Linear Estimation and LinearQuadratic Regulation for Discrete Time-delay Systems
	Xinmin Song, Xuehua Yan
	Information Science and System Science 19 November 2014
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	Abstract:This paper investigates the duality between the estimation and control problems for time-delay systems.We first consider the estimation problem for linear discrete-time systems in the presenceof multiplicative noise and time delays, where the delays appear in both state and measurementequations. Based on the innovation analysis approach, the linear minimum mean square error estimators are developed in terms of a forward partial difference Riccati equationand a forward Lyapunov equation.Then the linear quadratic regulation (LQR) problem for deterministic time-delay systems is discussed based on the dynamic programming technique, and the controlleris given in terms of a backward partial difference Riccati equation and a backward Lyapunov equation. Finally,after comparing the estimation and control results, we establish a dualitybetween the estimation problem for time-delay systems with multiplicative noise andthe LQR problem for deterministic time-delay systems with constraint conditions.
	TO cite this article:Xinmin Song, Xuehua Yan. Duality Principle between Linear Estimation and LinearQuadratic Regulation for Discrete Time-delay Systems[OL].[19 November 2014] http://en.paper.edu.cn/en_releasepaper/content/4618285


	6. Robustness of centrality measures against network manipulation
	Qikai Niu,ZengAn,FanYing,Zengru Di
	Information Science and System Science 19 November 2014
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	Abstract:Node centrality is an important quantity for complex networks as it is related to many applications ranging from the prediction of network structure to the control of dynamics on networks. In the literature, much effort has been devoted to design new centrality measurements. However, the reliability of these centrality measurements haven't been fully understood. Many real networks are facing different kinds of manipulations such as addition, removal or rewiring of links. In this paper, we focus on the robustness of classic centrality measures against network manipulation. Our analysis is based on both artificial and real networks. We find that the centrality measurements are generally more robust in heterogenous networks. Moreover, the top part of the centrality ranking is more resistant to manipulation. Among the centrality measures we considered, the eigenvector centrality is in general the most robust one.?????
	TO cite this article:Qikai Niu,ZengAn,FanYing, et al. Robustness of centrality measures against network manipulation[OL].[19 November 2014] http://en.paper.edu.cn/en_releasepaper/content/4618979


	7. Distributed Containment Control of Multi-Agent Linear Systems
	WEN Guanghui, HU Guoqiang, ZUO Zhiqiang, CAO Jinde, YU Wenwu
	Information Science and System Science 18 November 2014
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	Abstract:In this paper, the distributed containment control problem is studied for a class of multi-agent systems with linear node dynamics and directed communication topology.A kind of distributedcontrol protocol based only on the relative outputs of neighboringagents is first designed and utilized. Under the assumptions that each dynamical agent is stabilizable and detectable, and for each followerthere exists at least one leader that has a directed path to thatfollower, it is theoretically proved that containment in the closed-loop multi-agent systemcan be guaranteed if the coupling strength between neighboring agents is larger than a threshold value $xi_{0}$, which depends on the eigenvalues of the Laplacian matrix $L$ associated with the communication topology. The convergence rate of containment in multi-agent systems is also discussed. However, the designed protocols fail to achieve containment if some agents can not obtain the exact values of the nonzero eigenvalues of Laplacian matrix $L$. To deal with this challenging case, a favorable self-adaptive containment protocol is further constructed and employed.
	TO cite this article:WEN Guanghui, HU Guoqiang, ZUO Zhiqiang, et al. Distributed Containment Control of Multi-Agent Linear Systems[OL].[18 November 2014] http://en.paper.edu.cn/en_releasepaper/content/4613517


	8. Design of Output Feedback Prediction Controller for A kind of Uncertain Nonlinear Systems
	Baili Su,Yan Yan
	Information Science and System Science 01 November 2014
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	Abstract:This paper presents a model predictive control algorithm based on state observers for a class of constrained uncertain nonlinear system with unavailable state measurements. The main idea is to obtain an output feedback bounded controller with adjustable parameters and robust stability region by state observers and robust control Lyapunov function firstly; In the stable region, compute the adjustable parameters by optimizing the performance indexes to design the robust output feedback predictive controller that satisfying the constraints as well as guaranteeing the robust asymptotic stability of closed-loop system; Out of the stability region, we design a predictive control algorithm on the basis of terminal region constraints and get the robust output feedback predictive controller. At last, the simulation results of a numerical example illustrate the validity of the algorithm.
	TO cite this article:Baili Su,Yan Yan. Design of Output Feedback Prediction Controller for A kind of Uncertain Nonlinear Systems[OL].[ 1 November 2014] http://en.paper.edu.cn/en_releasepaper/content/4616400


	9. Distributed Consensus Strategy for Economic Power Dispatch in A Smart Grid
	YU Wenwu,LI Chaojie,YU Xinghuo,WEN Guanghui,Lv Jinhu
	Information Science and System Science 15 October 2014
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	Abstract:This paper studies economic power dispatch strategyin a smart grid by using the distributed consensus protocol inmulti-agent systems, where there are many generation units workingcooperatively under a local neighboring area to achieve a minimumsolution for the optimization problem of the total cost function.At first, the analysis indicates that the total cost forgenerators in a smart grid can reach its minimal value if theincremental cost for all generation units can achieve consensusand the balance between supply and demand of powers is satisfied.Then, by designing a distributed consensus protocol in multi-agentsystems for the incremental cost with appropriate initialconditions, incremental cost consensus can be reached for all thegeneration units and the balance for the powers can also be kept.Thus, the optimization problem for the cost function of allgeneration units can be solved. Finally, some simulation examplesare performed to verify the analysis in this paper.
	TO cite this article:YU Wenwu,LI Chaojie,YU Xinghuo, et al. Distributed Consensus Strategy for Economic Power Dispatch in A Smart Grid[OL].[15 October 2014] http://en.paper.edu.cn/en_releasepaper/content/4613493


	10. Automatic Chinese Caption Location and Recognition in Video
	Zhang Bin,Zhang Honggang,Li Siyuan,Guo Jie
	Information Science and System Science 15 October 2014
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	Abstract:Automatic caption location and recognition in videos is now recognized as a key component in the development of a advanced video annotation and retrieval systems. In this paper,a automatic caption location and recognition system is proposed,which is mainly composed of a caption location and character recognition subsystem.In the caption location module,a novel binarization technique named LMM,which makes use of the image contrast that is defined by the local image maximum and minimum is applied.Abundant experiment prove that this algorithm has good performance in suppressing the complex background in image. Multi-frames fusion is used to get a more accurately binarization image and projection method is adopted to segment the character later.Finally,extracting the characters's edge statistical information to form a feature vector, calculating the similarity between vectors to recognize the character. Do a post-processing to further improve the recognition rate. We achieved relatively satisfactory experiment results,our recognition rate is nearly 0.9 in various video .
	TO cite this article:Zhang Bin,Zhang Honggang,Li Siyuan, et al. Automatic Chinese Caption Location and Recognition in Video[OL].[15 October 2014] http://en.paper.edu.cn/en_releasepaper/content/4613714

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