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A novel design of Cognitive Wireless Networks: Architecture and testbed 一种新的认知无线网络设计:架构与测试平台
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158292
Z. Feng, Fenglin Xie, Yiyi Chen, Xun Wang, Xin Chen
{"title":"A novel design of Cognitive Wireless Networks: Architecture and testbed","authors":"Z. Feng, Fenglin Xie, Yiyi Chen, Xun Wang, Xin Chen","doi":"10.1109/ChinaCom.2011.6158292","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158292","url":null,"abstract":"Cognitive Wireless Network (CWN) is a set of heterogeneity networks designed to perceive and learn from current multi-domain environment, then plan and decide a scheme based on the end-to-end goals. It aims to satisfy the integration, ubiquity and broadband requirements of future networks. With the complexity of heterogeneity networks rising, the need to manage this complexity makes the realization of CWN well-timed and attractive. Many related projects to do further study have been built by research teams. During the past few years, we are working on a project called “Basic theory and Key Technologies in Cognitive Wireless Networks”. It is one of the major projects in National Basic Research Program (973 Program) approved by the Chinese government. Our research team concentrates on issues including network architecture, multi-dimension sensing technologies and radio resource management which are connected with each other. In this article, an overview of this project will be shown by introducing its purpose, research vision, research progress, and testbed.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125754910","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: 0
Intelligent AP selection for indoor positioning in wireless local area network 无线局域网室内定位智能AP选择
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158159
Zhian Deng, Lin Ma, Yubin Xu
{"title":"Intelligent AP selection for indoor positioning in wireless local area network","authors":"Zhian Deng, Lin Ma, Yubin Xu","doi":"10.1109/ChinaCom.2011.6158159","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158159","url":null,"abstract":"Indoor positioning system in wireless local area network (WLAN) has been receiving increasing interest in pervasive computing applications. To keep balance between energy consumption on client device and positioning accuracy, AP selection strategy is always proposed to select the most discriminant APs for positioning. In this paper, we propose an intelligent AP selection method based on joint location information gain. In contrast to traditional AP selection methods which measure the discriminant ability of APs independently, we consider it jointly. By considering the correlation of the discriminant ability between different APs, more accurate measure of the discriminant ability can be taken. Besides, support vector regression (SVR) positioning algorithm is combined to estimate the location. Experiments are carried in a realistic WLAN indoor environment. Experimental results show that, by using the intelligent AP selection method, the proposed positioning algorithm maintains a high-level accuracy while reducing the energy consumption on client device significantly.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127904871","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: 14
Fully reconfigurable cognitive OFDMA testbed 完全可重构的认知OFDMA测试平台
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158290
Lianxiang Wang, Zhaoyang Zhang, Lu Ye, Benkang Gong, Wentao Lou
{"title":"Fully reconfigurable cognitive OFDMA testbed","authors":"Lianxiang Wang, Zhaoyang Zhang, Lu Ye, Benkang Gong, Wentao Lou","doi":"10.1109/ChinaCom.2011.6158290","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158290","url":null,"abstract":"In this paper, we report our design and implementation of a testbed for demonstration of cognitive OFDMA transmission. Our implementation is based on a powerful fully programmable software radio platform, i.e., the Microsoft Research Software Radio(MRSR) platform. Two kinds of nodes are designed in the testbed, one acts as the primary user(PU) which communicates in the authorized frequency band with dynamic spectrum activity, and the other acts as the secondary user(SU) which opportunistically accesses the vacant frequency without disrupting the transmission of primary user. To this end, the SU nodes are equipped with reliable multi-carrier sensing functionality, as well as some special multi-channel signalling and processing capabilities. Test results show that the SU nodes can alter their power, frequency and other parameters dynamically and communicate efficiently in response to the PU's spectrum activity.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115818161","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
Seamless handover in integrated WDM/TDM PON and WiMAX architecture 集成WDM/TDM PON和WiMAX架构的无缝切换
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158301
Shiliang Li, K. Lu, Yinlong Xu
{"title":"Seamless handover in integrated WDM/TDM PON and WiMAX architecture","authors":"Shiliang Li, K. Lu, Yinlong Xu","doi":"10.1109/ChinaCom.2011.6158301","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158301","url":null,"abstract":"For advanced IP-based cellular network, seamless handover is a fundamental issue in mobility management, and it faces many challenges, include in-order packet delivery, no packet replication, no packet loss, low signaling overhead and minimum handover latency. To address these challenges, Optical Wireless Integration (OWI) appears as a promising technology because optical access technologies provide high bandwidth, low transmission delay and reliability. In this paper, we propose a new mobility management protocol for OWI which takes advantage of several mobility management protocols specified by IETF and services defined by IEEE. The performance analysis and numerical results show that our mobility management protocol can effectively solve all the challenges related to seamless handover and can efficiently improve handover performance in terms of handover latency, signaling overhead, packet loss and packet reordering.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115882529","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: 0
A network coding scheme for the multiple access full-duplex relay networks 一种多址全双工中继网络的网络编码方案
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158326
Zongyan Li, M. Peng, Wenbo Wang
{"title":"A network coding scheme for the multiple access full-duplex relay networks","authors":"Zongyan Li, M. Peng, Wenbo Wang","doi":"10.1109/ChinaCom.2011.6158326","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158326","url":null,"abstract":"To obtain better cooperative diversity on relay networks, this paper proposes a network coding (NC) scheme for the multiple access full-duplex relay networks. The scheme uses XOR-operation NC at the relay and iterative decoding at the destination. We describe in detail the iterative decoding algorithm which can obtain the substantial spatial diversity contained in the XOR-operation NC and signal superposition. The proposed scheme is evaluated for AWGN and Rayleigh fading channels, and it is shown to improve the bit-error-rate (BER) performance of the full-duplex relay networks in both cases. Simulation results confirm that the proposed scheme outperforms the referenced retransmission scheme, the reason for this is that the redundancy which is provided by the relay can be better exploited with XOR-operation NC.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"62-63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132338829","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
A novel MAC protocol for mixed traffics in LEO satellite networks 一种用于低轨道卫星网络混合业务的MAC协议
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158167
Mingxiang Guan, Yuchen Wang, Qing Guo
{"title":"A novel MAC protocol for mixed traffics in LEO satellite networks","authors":"Mingxiang Guan, Yuchen Wang, Qing Guo","doi":"10.1109/ChinaCom.2011.6158167","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158167","url":null,"abstract":"Considering that weak channel collision detection ability, long propagation delay and heavy load in LEO satellite communications,a valid adaptive MAC protocol was proposed. Different access probability functions for different services were obtained and appropriate access probabilities for voice and data users were updated slot by slot based on the estimation of the voice traffic and the channel status. In the proposed MAC protocol limited wireless resource is allocated reasonably by multiple users and high capacity was achieved. Three performance parameters: voice packet loss probability, average delay of data packets and throughput of data packets were considered in simulation. Finally simulation results demonstrated that the performance of system was improved by the proposed MAC protocol, with an acceptable trade-off between QoS of voice and delay of data.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132400113","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
A survey of error floor of LDPC codes LDPC码误差层的研究
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158120
Yejun He, Jie Yang, Jiawei Song
{"title":"A survey of error floor of LDPC codes","authors":"Yejun He, Jie Yang, Jiawei Song","doi":"10.1109/ChinaCom.2011.6158120","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158120","url":null,"abstract":"The research about error floor of finite-length LDPC code is a very hot topic recently. This survey briefly introduces the existing works in lowering and estimating error floor of LDPC codes, and sheds some light on some potential future research areas.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130011509","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
An efficient power allocation algorithm with fairness constraints in cognitive OFDMA system 认知OFDMA系统中一种有效的公平约束功率分配算法
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158275
Lu Ye, Zhaoyang Zhang, Zhipeng Zhang, Benkang Gong, Lianxiang Wang
{"title":"An efficient power allocation algorithm with fairness constraints in cognitive OFDMA system","authors":"Lu Ye, Zhaoyang Zhang, Zhipeng Zhang, Benkang Gong, Lianxiang Wang","doi":"10.1109/ChinaCom.2011.6158275","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158275","url":null,"abstract":"An efficient power allocation algorithm for OFDMA-based cognitive radio (CR) systems with the total power limitation, interference constraint, and proportional fairness requirement is proposed. While solving the optimization problem with multiple constraints is computationally infeasible, we exploit the structure of the nonlinear equations to obtain an approximate solution. It can fairly allocate power among the second users (SUs) with significantly reduced complexity. Furthermore, we replace the traditional water-filling (WF) algorithm with a much faster alternative that can avoid repeated iterations to facilitate subcarrier power allocation within a single SU. Simulation results show the proposed algorithm can maintain a higher capacity, while effectively ensure the fairness among SUs compared with the referenced algorithms.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134049978","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
Optimal packet size design for multimedia transmissions in cognitive radio networks 认知无线网络中多媒体传输的最佳分组大小设计
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158268
Xinlin Huang, G. Wang, Fei Hu, Sunil Kumar, Ye Zhang
{"title":"Optimal packet size design for multimedia transmissions in cognitive radio networks","authors":"Xinlin Huang, G. Wang, Fei Hu, Sunil Kumar, Ye Zhang","doi":"10.1109/ChinaCom.2011.6158268","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158268","url":null,"abstract":"This paper proposes an optimal packet size search method for multimedia transmission over multi-channel link in multi-class cognitive radio networks. Since the transmission power is limited for users, optimal packet size and corresponding power allocation is needed to maximize expected utility function. The performance is evaluated through the comparison with power-consuming method. Since our proposed method considers not only traffic pattern but also wireless channel characteristics over frequency channel, our simulation results show that the proposed scheme is more energy efficient.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131884490","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: 5
Topology design of industrial ethernet networks using a multi-objective genetic algorithm 基于多目标遗传算法的工业以太网拓扑设计
2011 6th International ICST Conference on Communications and Networking in China (CHINACOM) Pub Date : 2011-08-17 DOI: 10.1109/ChinaCom.2011.6158251
Lei Zhang, M. Lampe, Zhi Wang
{"title":"Topology design of industrial ethernet networks using a multi-objective genetic algorithm","authors":"Lei Zhang, M. Lampe, Zhi Wang","doi":"10.1109/ChinaCom.2011.6158251","DOIUrl":"https://doi.org/10.1109/ChinaCom.2011.6158251","url":null,"abstract":"This paper addresses the problem of network topology design from an industry perspective. The topology design of industrial communication networks is formulated as a multi-objective optimization problem, considering the specific requirements of industrial applications, e.g. the diversified real-time requirements, fast recovery time, high reliability, and low cost. Different from previous publications, the problem is discussed with respect to distributed multi-ring network structures. A weighted Dandelion encoding is proposed to represent multi-ring topologies and incorporated into a multi-objective genetic algorithm to find close-to-optimal solutions. Experimental results for different application examples show the effectiveness of the proposed algorithm.","PeriodicalId":339961,"journal":{"name":"2011 6th International ICST Conference on Communications and Networking in China (CHINACOM)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131205439","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
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