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7th International Conference on Communications and Networking in China最新文献

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Research and application on LTE technology in smart grids LTE技术在智能电网中的研究与应用
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417452
Jie Du, Manli Qian
{"title":"Research and application on LTE technology in smart grids","authors":"Jie Du, Manli Qian","doi":"10.1109/ChinaCom.2012.6417452","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417452","url":null,"abstract":"The development of smart grid requires higher data rate and wider coverage for current communication networks. What's more, the communication network should be rapidly and flexibly deployed in emergency situation. In this paper, we first investigate the requirements of communication network in smart grid. Then application of LTE in normal and emergency situations in smart grid is proposed. Finally, the network architecture and the optimize strategies of LTE system in smart grid are discussed.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121045368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Receiver design for underwater wireless optical communication link based on APD 基于APD的水下无线光通信链路接收机设计
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417495
Shijian Tang, Yuhan Dong, Xuedan Zhang
{"title":"Receiver design for underwater wireless optical communication link based on APD","authors":"Shijian Tang, Yuhan Dong, Xuedan Zhang","doi":"10.1109/ChinaCom.2012.6417495","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417495","url":null,"abstract":"In this paper, we present a gain control scheme of receiver based on avalanche photodiodes (APDs) for underwater wireless optical communication links. We first derive the approximate expression of optimal gain of APD. Then based on beam-spread function, a closed-form expression of relationship of optimal gain of APD, link range and receiver offset distance is derived. Then a self-adaptive gain control scheme is designed to keep the gain of receiver as optimal gain when the receiver deviates unpredictably. We also evaluate the dynamic range of receiver gain. Our results are beneficial for receiver design and link reliability improvement.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"2 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123426804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Laplacian-based H.264 intra-prediction mode decision 基于拉普拉斯的H.264内预测模式决策
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417561
Chi-Chou Kao, Y. Lai, Chao-Feng Tseng
{"title":"Laplacian-based H.264 intra-prediction mode decision","authors":"Chi-Chou Kao, Y. Lai, Chao-Feng Tseng","doi":"10.1109/ChinaCom.2012.6417561","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417561","url":null,"abstract":"Compared with the conventional video coding standards, H.264 provide new coding techniques, such as Multi-picture inter-picture prediction, Variable block-size, Quarter-pixel precision for motion compensation, intra prediction, Context-adaptive variable-length coding and Context-adaptive binary arithmetic coding. Intra coding is used for reducing the spatial redundancy in video coding. H.264 supports several MB (Macroblock) predictions for Intra coding such as luma block four 16×16 modes, nine 4×4 modes and chroma block four modes, which significantly improve Intra coding efficiency, but increase the encoding complexity. This paper presents an approach to the intra mode decision problem. Based on Laplacian, this approach detects edges and then selects the best mode for the block. This method can shorten the time to choose a mode and reduce the encoding time as well.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125517509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Software-defined Radio based On Cortex-A9 基于Cortex-A9的软件无线电
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417585
Xin Wei, Xin Qi, Limin Xiao, Zhiyuan Shi, Lianfeng Huang
{"title":"Software-defined Radio based On Cortex-A9","authors":"Xin Wei, Xin Qi, Limin Xiao, Zhiyuan Shi, Lianfeng Huang","doi":"10.1109/ChinaCom.2012.6417585","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417585","url":null,"abstract":"This paper presents an implementation of Software-defined Radio (SDR) system over ARM Cortex-A9 processor. Compared with conventionally used general purpose CPU, e.g. X86 CPU, ARM processors have advantages in both price and power consumption under the same computing capability. Two basic issues of SDR over ARM are investigated: the real-time operation and signal processing efficiency. For the former issue, we select the Linux-based real-time operating system Xenomai, which is built on Cortex-A9 platform. Testing results show that the performance of Xenomai on Cortex-A9 meets the real-time requirement of SDR. Furthermore, the NEON technology of Cortex-A9 is used to optimize the complex signal processing algorithms in communication systems. Soft Demodulation is taken as an example for the optimization, and the experimental results are provided to show the improvement of signal processing efficiency.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114144752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Dynamic routing and spectrum assignment algorithms in flexible optical networks: An overview 柔性光网络中的动态路由和频谱分配算法:综述
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417485
Nan Hua, Yang Liu, Xin Wan, Xiaoping Zheng, Zhigang Liu
{"title":"Dynamic routing and spectrum assignment algorithms in flexible optical networks: An overview","authors":"Nan Hua, Yang Liu, Xin Wan, Xiaoping Zheng, Zhigang Liu","doi":"10.1109/ChinaCom.2012.6417485","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417485","url":null,"abstract":"In this paper, we examine the current research on the dynamic routing and spectrum assignment (RSA) problem in flexible optical networks. The existing RSA algorithms are classified into three main categories: fixed routing (FR), fixed alternative routing (FAR) and adaptive routing (AR). We select the representative algorithms within each category, and briefly introduce their concept, advantage and drawback. Comparison among these algorithms is made in respect of blocking performance, computational complexity and so on.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114182049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
BCE: A privacy-preserving common-friend estimation method for distributed online social networks without cryptography BCE:一种不使用加密的分布式在线社交网络的隐私保护的共同朋友估计方法
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/chinacom.2012.6417478
Yongquan Fu, Yijie Wang
{"title":"BCE: A privacy-preserving common-friend estimation method for distributed online social networks without cryptography","authors":"Yongquan Fu, Yijie Wang","doi":"10.1109/chinacom.2012.6417478","DOIUrl":"https://doi.org/10.1109/chinacom.2012.6417478","url":null,"abstract":"","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"179 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114481644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Performance analysis of Dynamic Point Selection in system level simulation 系统级仿真中动态点选择的性能分析
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417590
Wang Chunye, P. Skov, Li Zhang
{"title":"Performance analysis of Dynamic Point Selection in system level simulation","authors":"Wang Chunye, P. Skov, Li Zhang","doi":"10.1109/ChinaCom.2012.6417590","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417590","url":null,"abstract":"At the end of 2011, DPS (Dynamic Point Selection) becomes a hot topic during the standardization process of 3GPP LTE Release 11. DPS as a special case of JT CoMP is very simple and robust. In this paper, we explore the reason why DPS boosts cell coverage performance with comprehensive simulation results.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"143-147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130645899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
PRNG based on the variant logic 基于变体逻辑的PRNG
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417476
W. Z. Yang, Z. Zheng
{"title":"PRNG based on the variant logic","authors":"W. Z. Yang, Z. Zheng","doi":"10.1109/ChinaCom.2012.6417476","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417476","url":null,"abstract":"This paper introduces a new Pseudo-Random Number Generator (PRNG) scheme based on the Variant Logic scheme, an extension of Cellular Automata (CA) to construct a PRNG. A list of classical methods, BBS, sha-1 and linear- congruent were compared, the measuring results show that the Variable Logic scheme can produce a better pseudo-random number series than the compared models.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116492125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Optimal channel selection for cooperative spectrum sensing using coordination game 基于协调博弈的协同频谱感知最优信道选择
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417458
Yuhua Xu, Zhan Gao, Weixin Tian
{"title":"Optimal channel selection for cooperative spectrum sensing using coordination game","authors":"Yuhua Xu, Zhan Gao, Weixin Tian","doi":"10.1109/ChinaCom.2012.6417458","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417458","url":null,"abstract":"This paper studies the problem of sensing channel selection in cognitive radio networks, where multichannel cooperative spectrum sensing and fusing are employed. Since the cognitive radio users can not sense all the channels simultaneously, it is important for the users to select sensing channels properly. We first formulate the channel selection problem as a coordination game model and then propose a learning algorithm to achieve the optimal solution. The proposed algorithm is simple, distributed, and optimal; moreover, it only need slight information exchange. Also, the tradeoff between sensing cost and achievable system throughput is investigated. The proposed solution provides a promising approach for distributed optimization problems, especially the one with heavy computation complexity, and hence can be applied to other scenarios.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114725580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Interference management in heterogeneous network 异构网络中的干扰管理
7th International Conference on Communications and Networking in China Pub Date : 2012-08-01 DOI: 10.1109/ChinaCom.2012.6417511
Qiubin Gao, Wenhong Chen, Bin Guo, Shaohui Sun
{"title":"Interference management in heterogeneous network","authors":"Qiubin Gao, Wenhong Chen, Bin Guo, Shaohui Sun","doi":"10.1109/ChinaCom.2012.6417511","DOIUrl":"https://doi.org/10.1109/ChinaCom.2012.6417511","url":null,"abstract":"Inter-cell interference is the main factor influencing performance in future cellular mobile systems. Interference management has become an important issue in system design, especially in heterogeneous networks since interference is more severe. To combat the interference, coordination between cells in heterogeneous network is considered. According to the quality of backhaul link, coordination can be implemented semi-statically or dynamically. By semi-static coordination, time-frequency resources and spatial resources used for transmission are coordinated. To achieve better coordination result, dynamic coordination can be operated if backhaul quality is sufficient. A hybrid approach of semi-static and dynamic coordination is proposed to take advantages of both sides. An efficient algorithm is given to find suboptimal solution to the complex optimization problem for the dynamic part of the hybrid approach. Numerical results are given to demonstrate the effectiveness of the proposed solution.","PeriodicalId":143739,"journal":{"name":"7th International Conference on Communications and Networking in China","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126289442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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