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The connectivity is a basic and important characteristic to the network,it expresses the situation of ink connectivity directly,and provides important reference for the entire network *** statistics and probability Theory,this article emphasizes the probability between any two nodes in the network which nodes are equally distributed and the connectivity of whole *** last,this article has made verification through simulation and has made out a conclusion,the simulation result agrees with theoretica analysis

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An Audio Zero-Watermark Scheme Based on Energy Comparing

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china communications 2014年第7期11卷 110-116页

作者： YANG Yu lEI Min CHENG Mingzhi lIU Bohuai lIN Guoyuan XIAO Da information Security Center Beijing University of Posts and Telecommunications Beijing China College of information engineering Beijing Institute of Graphic Communication Beijing China National engineering laboratory for Disaster Backup and Recovery Beijing China school of Computer Science and Technology China University of Mining and Technology China

Zero-watermark technique,embedding watermark without modifying carriers,has been broadly applied for copyright protection of ***,there is little research on audio *** paper proposes an audio zero-watermark scheme based on energy relationship between adjacent audio *** use of discrete wavelet transformation(DWT),it gets power approximations,or energies,of audio ***,it extracts the audio profile,*** zero-watermark,according to the relative size of energies of consecutive *** experimental results demonstrate that the proposed scheme is robust against general malicious attacks including noise addition,resampling,low-pass filtering,etc.,and this approach effectively solves the contradiction between inaudibility and robustness.

关键词： zero-watermark audio water-marking scheme energy comparing

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An Energy Minimization Algorithm based on Synergy Choice for Resourceconstrained Wireless Senor Network

An Energy Minimization Algorithm based on Synergy Choice for...

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2009 ISECS International Colloquium on Computing, communication, Control, and Management

作者： long Cheng-zhi 1,2,Chen Hui3,li li-hong 4,Wu Wei-ling 2,xiang Man-tian5 1 school of information engineering,Nanchang university,Nanchang,330031 china 2 school of information engineering,beijing university of posts and telecommunications,beijing,100876 china 3 school of Foreign Studies,Nanchang university,Nanchang,330031 china 4 Software College,Nanchang university,Nanchang,330031 china 5 school of Electronicsand information,Northwestern Polytechnicaluniversity,Xian,710072 china

Cooperative diversity can be applied to energyconstrained resource-constrained wireless sensor network s to significantly reduce node energy ***,cooperation synergy must be carefully selected and coordinated to practically exploit this energy saving *** this paper we investigate synergy choice for energy minimization algorithm in a resource-constrained wireless sensor *** formulate novel and computationally efficient synergy choice heuristics for sensor nodes based on either global or local knowledge of average path loss values in the *** present extensive simulation results of cooperation in a resource-constrained wireless sensor network to show that the proposed heuristics achieve near-optimally energy efficient synergy ***,our simple synergy choice heuristics form the basis of an effective distributed cooperation protocol for improving the energy efficiency of a resource-constrained wireless sensor *** importantly from the point of view of practical implementation,we show that our synergy choice heuristic based on local information is the most effective cooperation strategy for resource-constrained resource-constrained wireless sensor networks,as it yields superior energy conservation results while enabling fully distributed and scalable cooperation.

关键词： cooperative diversity synergy choice energy efficiency resource-constrained wireless sensor networks

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NOVEl ITERATIVE APPA CARRIER PHASE RECOVERY AND DETECTION FOR TURBO-CODED SYSTEMS

NOVEL ITERATIVE APPA CARRIER PHASE RECOVERY AND DETECTION FO...

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2009 IEEE International Conference on communication Technology and Applications（ICCTA2009）

作者： Bo He~1,jun li~(2,3),MingMing li~3,Meng Hou~(2,3) 1.school of information Science and engineering,Shandong university,Ji’nan 250100,china 2.Shandong Institute of light Industry,Ji’nan 250353,china 3.beijing university of posts and telecommunications,beijing 100876,china

This paper introduced a novel a priori probability aided(APPA) carrier phase recovery and signal detection *** algorithm utilized the soft value of the extrinsic information generated by iterative MAP decoders by means of iteration after *** method provided robust carrier phase estimation along with reliable signal decoding with a wide range of phase errors at such low signal-to-noise ratio(SNR) conditions that turbo coded systems operate *** order to take full advantage of turbo iterative decoding structure and the output soft information,we improved turbo decoding iterative structure and proposed a novel turbo iterative scheme which include iterative calculation of both information and parity bits log-likelihood Ratio(llR).We applied the above iterative structure into APPA carrier *** with traditional turbo iteration methods,the novel turbo iteration algorithm can improve the acquisition region from -40 to 40 degrees while acquisition region is from -30 to 30 degrees in traditional methods at the same 3 iteration stage. The overall BER decreases greatly at the same number of turbo *** algorithm has additional advantages including reasonable hardware complexity and easy to be implemented.

关键词： turbo iteration carrier synchronization A priori probability aided(APPA) extrinsic information log-likelihood function(llF)

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Fuzzy Control for Networked Control Systems Based on Average Time-Delay

Fuzzy Control for Networked Control Systems Based on Average...

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第二十七届中国控制会议

作者： Wang Guojing,Mu Zhichun school of information engineering,university of Science and Technology beijing,beijing 100083,P.R.china

This paper deals with networked control systems with random long time-delay *** to the actual time-delay,we design a discrete model of networked control systems and propose a fuzzy controller based on parallel distributing compensation *** method to design membership function is also *** theory and linear Matrix Inequality are used to derive the sufficient conditions that guarantee the stability of networked control systems.A simulation example illustrating the proposed method is given.

关键词： Networked control systems(NCS) Fuzzy control Random time-delay Parallel distributing compensation

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Who Talk More? The Impact of Relational Attributes on Mobile Phone Users' communication Behavior

Who Talk More? The Impact of Relational Attributes on Mobile...

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2008 International Seminar on Business and information Management

作者： Xuecheng Yang,Xiaohang Zhang school of Economics and Management beijing university of posts and telecommunications beijing,china Feng Zuo Broadband Online ltd. china Network communications Corporation beijing,china

Predicting customers' behavior precisely is a major task for Customer Relationship Management(CRM).although the current CRM analysis already considered many customer attributes such as demography information,consumption characteristics,the customers' interaction,and in particular relational attributes have not been examined deeply,even it is well known that customers are consciously or unconsciously connected to each *** paper focuses on the impact of relational attributes on mobile phone users' communication *** of considering the market as a set of independent entities,market in this paper's prospect is a social network in which the customers are linked with each other via mobile communication applications such as voice calling,SMS,MMS,blue-tooth,*** presumption in our empirical study is that customers' relational attributes can significantly affect their communication behavior(*** calling).The result of our study is fully supported this presumption,and approves that relational attributes are the powerful predictors of customers' voice calling behaviour,and furthermore,higher calling level and lower calling level users show different relationships with those network attributes.

关键词： Customer Relationship Management,Relational Attributes,Social Network Analysis,communication Behavior,Telecommunication Industry

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Outage Probability of Transmitter Antenna Selection/Receiver-MRC over Spatially Correlated Nakaga mi-Fading Channel

Outage Probability of Transmitter Antenna Selection/Receiver...

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第八届国际信号处理国际会议

作者： Bao-yun Wang and Wei Xing Zheng College of communication and information engineering Nanjing university of posts and telecommunications Nanjing 210003 china school of Computing and Mathematics university of Western Sydney Penrith South DC NSW 1797 Australia

＜正＞The deployment of multiple antennas at the receiver or transmitter will increase the complexity and thus the cost of the communication systems. To design an MIMO system with a reasonable complexity is a challenging task. Antenna selection is a very attractive technique in this field. In this paper, we investigate the outage performance of the transmitter antenna selection/ receiver MRC scheme over correlated Nakagami-fading channels. We utilize the characteristics function method to derive outage probability. Computer simulation study is conducted to evaluate the derived expression.

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Multi-layer network embedding on scc-based network with motif

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Digital communications and Networks 2024年第3期10卷 546-556页

作者： lu Sun Xiaona li Mingyue Zhang liangtian Wan yun lin Xianpeng Wang Gang Xu Department of communication engineering Institute of Information Science TechnologyDalian Maritime UniversityDalian116026China Key laboratory of Big Data Intelligent Computing Chongqing University of Posts and TelecommunicationsChongqing400065China Key laboratory for Ubiquitous Network and Service Software of liaoning Province DUT School of Software Technology&DUT-RU International School of Information Science and EngineeringDalian University of TechnologyDalian 116620China College of information and communication engineering Harbin Engineering UniversityHarbin 150001China school of information and communication engineering Hainan UniversityHaikou 570228China State Key laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China

Interconnection of all things challenges the traditional communication methods,and Semantic communication and Computing(SCC)will become new *** is a challenging task to accurately detect,extract,and represent semantic information in the research of SCC-based *** previous research,researchers usually use convolution to extract the feature information of a graph and perform the corresponding task of node ***,the content of semantic information is quite *** graph convolutional neural networks provide an effective solution for node classification tasks,due to their limitations in representing multiple relational patterns and not recognizing and analyzing higher-order local structures,the extracted feature information is subject to varying degrees of ***,this paper extends from a single-layer topology network to a multi-layer heterogeneous topology *** Bidirectional Encoder Representations from Transformers(BERT)training word vector is introduced to extract the semantic features in the network,and the existing graph neural network is improved by combining the higher-order local feature module of the network model representation network.A multi-layer network embedding algorithm on SCC-based networks with motifs is proposed to complete the task of end-to-end node *** verify the effectiveness of the algorithm on a real multi-layer heterogeneous network.

关键词： Semantic communication and computing Multi-layer network Graph neural network Motif

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Nonlinear Prediction with Deep Recurrent Neural Networks for Non-Blind Audio Bandwidth Extension

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china communications 2018年第4期15卷 72-85页

作者： lin Jiang Ruimin Hu Xiaochen Wang Weiping Tu Maosheng Zhang National engineering Research Center for Multimedia Software School of Computer Science Wuhan University Wuhan 430072 China Institute of Big Data and internet Innovation Hunan University of Commerce Changsha 410205 China Software College East China University of Technology Nanchang 330013 China Collaborative Innovation Center for Economics crime investigation and prevention technology Jiangxi Province Nanchang 330103China Hubei Key laboratory of Multimedia and Network communication engineering Wuhan University Wuhan 430072 China Collaborative Innovation Center of Geospatial Technology Wuhan 430079 China

Non-blind audio bandwidth extension is a standard technique within contemporary audio codecs to efficiently code audio signals at low bitrates. In existing methods, in most cases high frequencies signal is usually generated by a duplication of the corresponding low frequencies and some parameters of high frequencies. However, the perception quality of coding will significantly degrade if the correlation between high frequencies and low frequencies becomes weak. In this paper, we quantitatively analyse the correlation via computing mutual information value. The analysis results show the correlation also exists in low frequency signal of the context dependent frames besides the current frame. In order to improve the perception quality of coding, we propose a novel method of high frequency coarse spectrum generation to improve the conventional replication method. In the proposed method, the coarse high frequency spectrums are generated by a nonlinear mapping model using deep recurrent neural network. The experiments confirm that the proposed method shows better performance than the reference methods.

关键词： audio coding non-blind audiobandwidth extension context correlation deeprecurrent neural network

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