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2017 9th IEEE International Conference on Communication Software and networks (ICCSN 2017)

作者： Yunyi Zheng Jianxin Chen Yi Cheng Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications

ISBN: (纸本)9781509038237;9781509038220

P2 P-based content request has been widely used because of its numerous advantages, such as flexibility, load distribution, efficiency and so on. However, there are still some problems to be solved such as service stability, adaptation and so on. The fragmentation methods used in existing P2 P systems are generally fixed block-size method or fixed duration method,which have significantly different performances in different network conditions and cannot adjust to the change of network conditions. In this paper, a novel method is presented to provide adaptive adjustment of fragmentation size for enhancing the performance and service stability. To calculate the adaptive size of fragmentation, several factors are taken into consideration including transmission rate, packet loss rate, file distributions and different peers. The simulation results show that the presented method performs better than the other methods in most network conditions.

关键词： P2P fragmentation adaptive fixed block size fixed duration transmission rate packet loss rate file distributions different peers

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A violations stop detect system based on surveillance camera

A violations stop detect system based on surveillance camera

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2012 2nd International Conference on Consumer Electronics, communications and networks, CECNet 2012

作者： Wang, Yu Su, Xiaoxian Yang, Mian Xu, Li Tang, Chao School of Information Engineering Key Lab. of Broadband Wireless Communications and Sensor Networks Wuhan University of Technology Wuhan China

ISBN: (纸本)9781457714153

In recent year, vehicle rapid develop become a serial of problem in city. Vehicle violation actions cause traffic jam seriously. The stop action in inhibit area has hider the traffic seriously. In traditional, the violation action is detect by supervise. This mode wastes hug human resource. How to detect and capture the violation action becomes a urgent task. In this paper, a new video detect and capture system is established. The system construct based on surveillance cameras. The system can detect the violate vehicle. The control device can control the surveillance cameras to zoom to capture a clear license plate. © 2012 IEEE.

关键词： Security systems

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Novel Colorization Method Based on Correlation Neighborhood Similarity Pixels Priori

Novel Colorization Method Based on Correlation Neighborhood ...

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2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Huanjuan Wang Zongliang Gan Yanbin Zhang Xiuchang Zhu Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

Colorization is a computer-aided process of automatically adding colors to grayscale images or videos according to the colors scribbled on by the user. In this paper, we propose a novel colorization method which based on correlation neighborhood similarity pixels priori. First, according to a key observation that similar intensities neighboring pixels have similar colors, our method searches the similarity neighborhood pixels group. Then, we compute the weighted coefficients of the neighborhood pixels in the luminance image and transmit the weighted coefficients to the chrominance. Finally, we obtain the chrominance values by solving a quadratic optimization problem which uses the colors scribbled on by the user as the linear constraints. The experimental results show that our approach is quite effective especially in the boundary parts. Moreover, our method can give better visually results when only a few colors scribbled on.

关键词： colorization optimization neighborhood similarity pixel joint correlation

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Semantic QoS Ontology and Semantic Service Ranking Approach for IoT services

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Journal of Harbin Institute of technology(New Series) 2014年第6期21卷 102-112页

作者： Nwe Nwe Htay Win Jian-Min Bao Gang Cui Purevsuren Dalaijargal School of Computer Science and Technology Harbin Institute of Technology Key Lab of Broadband Wireless Communication and Sensor Network Technolog Jiangsu Provincial Engineering Research Center of Telecommunications and Network TechnologyMinistry of Education

Due to a rapid increase in the number of functionally equivalent web services at open and dynamic Io T service environment,Qo S has become a major discrimination factor to reflect the user's expectation and experience of using a *** are different languages and models for expressing Qo S advertisements and requirements among service providers and ***,it leads to the issues of semantic interoperability of Qo S information and semantic similarity match between a semantic description of the service being requested by the service consumer,and a formal description of the service being offered by the service *** this paper,we propose a hierarchical two-layer semantic Qo S ontology to promote the description and declaration of Qo S-based service information in detail for any domain and ***,we develop a semantic matchmaking algorithm to compare the web services according to their Qo S information and adopt analytical hierarchy process( AHP) to make decision for the ranked services depending on the Qo S *** comparison study and experimental result show that our proposed system is superior to other service ranking approaches.

关键词： IoT service environment semantic QoS ontology semantic matchmaking algorithm QoS-based service information analytical hierarchy process

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A new algorithm for calibrate in building survey

A new algorithm for calibrate in building survey

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2012 2nd International Conference on Consumer Electronics, communications and networks, CECNet 2012

作者： Wang, Yu Su, Xiaoxian Xu, Li Luo, Yi Yang, Mian School of Information Engineering Key Lab. of Broadband Wireless Communications and Sensor Networks Wuhan University of Technology Wuhan China

A new building survey based on laser and pan is proposed, how to calibrate the scanning device be the key factor in this system. We proposed a algorithm which use a serial of reference points to get the actual positio... 详细信息

ISBN: (纸本)9781457714153

关键词： Surveys

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Adaptive Resource Allocation Method over OFDMA System for H.264 SVC Transmission

Adaptive Resource Allocation Method over OFDMA System for H....

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2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Qikun Zhao Lina Qi Zongliang Gan Hongbo Zhu Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

This paper combines adaptive sub-carriers allocation, power allocation in OFDMA with the transmission of the H.264 SVC (Scalab.e Video Coding) encoded video sequences in order to support more user and provide better quality of service (Qos) to the subscribers. Firstly we compute the maximum number of users the system can support by our proposed CAC (call admission control), and then our proposed adaptive resource allocation algorithm is utilized to allocate resource to these users On the premise of meeting the most basic requirements of all the users, our proposed scheme can select appropriate resolution adaptively for users according to the channel information. Experimental results demonstrate that our scheme performs better than systems with a fixed resource allocation strategy.

关键词： OFMDA H.264 Adaptive Resource Allocation

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The Spectrum Allocation of Primary user Based on Bayesian Game

The Spectrum Allocation of Primary user Based on Bayesian Ga...

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2012 IEEE 11th International Conference on Signal Processing(ICSP 2012)

作者： Zhiqiang Fang Lina Qi Zhongliang Gan Hongbo Zhu Qikun Zhao Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of EducationNanjing University of Posts and Telecommunications

ISBN: (纸本)9781467321969

In cognitive radio system, the Cournot game model is used for analyzing the spectrum allocation of primary users. Considering the noise is random, the spectrum allocation of primary user based on Bayesian game is proposed in this paper. First, the transmit power is viewed as one factor of the cost function. And considering the noise is uncertain, the high noise and the low noise are viewed as two different types of primary users. Then, we can obtain the strategy of primary user by using dynamic Bayesian game. The experimental results on spectrum allocation demonstrate the effectiveness of the proposed scheme.

关键词： cognitive radio Bayesian game spectrum allocation channel noise

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INTERFERENCE COORDINATION METHOD BASED ON GRAPH THEORY IN TWO-TIER CELLULAR networkS

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Journal of Electronics(China) 2013年第1期30卷 66-74页

作者： Shi Jurong Zhu Qi Jiangsu Key Lab of Wireless Communications Key Lab on Wideband Wireless Communications and Sensor Network. Technology of Ministry of Education Nanjing University of Posts and Telecommunications

This paper studies an interference coordination method by means of spectrum allocation in Long-Term Evolution (LTE) multi-cell scenario that comprises of macrocells and femtocells. The purpose is to maximize the total throughput of femtocells while ensuring the Signal-to-Interference plus Noise Ratio (SINR) of the edge macro mobile stations (mMSs) and the edge femtocell Mobile Stations (fMSs). A new spectrum allocation algorithm based on graph theory is proposed to reduce the interference. Firstly, the ratio of Resource Blocks (RBs) that mMSs occupy is obtained by genetic algorithm. Then, after considering the impact of the macro Base Stations (mBSs) and small scale fading to the fMS on different RBs, multi-interference graphs are established and the spectrum is allocated dynamically. The simulation results show that the proposed algorithm can meet the Quality of Service (QoS) requirements of the mMSs. It can strike a balance between the edge fMSs' throughput and the whole fMSs' throughput.

关键词： Long-Term Evolution （LTE） Graph theory Two-tier cellular network Interference coordination

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Distributed precoding for multicell-MISO downlink CoMP

Distributed precoding for multicell-MISO downlink CoMP

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2011 IEEE 13th International Conference on Communication technology, ICCT 2011

作者： Zhang, Xiaona Yang, Long-Xiang Ding, Meiling Wu, Zhihua Jangsu Key Lab. of Wireless Communications Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab. of Broadband Wireless Communications and Sensor Network Technology Ministry of Education Nanjing 210003 China ZTE Corporation Nanjing 210003 China

ISBN: (纸本)9781612843070

Coordinated multi-point transmission/reception (CoMP), in which base stations cooperation during the downlink, has been considered as a attractive way of achieving higher performance and mitigating interference, especially for terminals at cell edges. In this paper, distributed precoding for multicell-MISO downlink CoMP is considered. Most previous work in the area is on the assumption that base stations have knowledge of both data symbols and full channel state information (CSI), which leads to heavy exchange of channel state information and signal information over backhaul links. In this paper, several distributed precoding strategies (Distributed MRT, distributed ZF, distributed LVSINR and DVSINR) for multicell-MISO downlink CoMP are analyzed, which supposes that each base station only has local CSI and the precoders can be devised at each BS in a distributed manner, and Monte Carlo simulations demonstrate the performance of such strategies. © 2011 IEEE.

关键词： Channel state information

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Design of a high-performance EEG acquisition system for unshielded environment

Design of a high-performance EEG acquisition system for unsh...

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2012 8th IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications, MESA 2012

作者： Yang, Minglong Ai, Qingsong Liu, Quan Key Lab. of Broadband Wireless Communications and Sensor Networks School of Information Engineering WHUT Wuhan China

ISBN: (纸本)9781467323475

According to characteristics of electroencephalo-graphy (EEG), a high-performance EEG acquisition system for unshielded environment is designed. The whole system is divided into EEG conditioning module, ADC sampling module and data acquisition software. EEG was extracted from human epidermis by EEG conditioning module. ADC sampling module completes the digitization of analog EEG signal. Digital EEG signals transmitted by the hardware are received by the data acquisition software. EEG acquisition experiments are implemented in routine environment. The results of the experiment indicate that the EEG acquisition system can collect EEG effectively and expediently without shielded environment. © 2012 IEEE.

关键词： Data acquisition

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