2010 17th International Conference on Telecommunications最新文献

Compensating for distortions in interpolation of two-dimensional signals using improved iterative techniques 利用改进的迭代技术补偿二维信号插值中的畸变

2010 17th International Conference on Telecommunications Pub Date : 2010-06-03 DOI: 10.1109/ICTEL.2010.5478860

Ali ParandehGheibi, M. Amin Rahimian, M. Akhaee, A. Ayremlou, F. Marvasti

引用次数: 2

A new TOA-DOA node localization for mobile ad-hoc networks: Achieving high performance and low complexity 一种新的移动自组织网络TOA-DOA节点定位:实现高性能和低复杂度

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478823

Zhonghai Wang, S. Zekavat

{"title":"A new TOA-DOA node localization for mobile ad-hoc networks: Achieving high performance and low complexity","authors":"Zhonghai Wang, S. Zekavat","doi":"10.1109/ICTEL.2010.5478823","DOIUrl":"https://doi.org/10.1109/ICTEL.2010.5478823","url":null,"abstract":"This paper proposes a novel approach for node localization with applications in mobile ad-hoc networks. The network consists of base nodes and target nodes. Base nodes equipped with antenna arrays are capable of localizing target nodes independently via integrated time-of-arrival (TOA) and direction-of-arrival (DOA) estimation. In addition, base nodes cooperate to improve the localization accuracy by fusing the estimated target node positions. Kalman filter is integrated with the fusion to further improve the localization performance. The proposed technique is compared to a localization technique based on extended Kalman filter (EKF), which directly fuses the multiple measured TOA-DOA. The comparison criteria include localization accuracy in terms of error cumulative distribution function (CDF) and approximate posterior Cramer Rao lower bound (APCRLB), filter stability and computational complexity. The comparison confirms that the proposed method involves minor computational complexity, while it demonstrates slightly larger PCRLB; however, compared to EKF its stability is higher. This makes it a good candidate for localizing multiple target nodes in mobile ad-hoc networks.","PeriodicalId":208094,"journal":{"name":"2010 17th International Conference on Telecommunications","volume":"192 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122122601","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

Joint and iterative detection and decoding of differentially encoded COFDM systems 差分编码COFDM系统的联合迭代检测与解码

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478774

W. V. Houtum, F. Willems

{"title":"Joint and iterative detection and decoding of differentially encoded COFDM systems","authors":"W. V. Houtum, F. Willems","doi":"10.1109/ICTEL.2010.5478774","DOIUrl":"https://doi.org/10.1109/ICTEL.2010.5478774","url":null,"abstract":"Divsalar and Simon showed that with multi-symbol differential detection, the performance gap between two-symbol differential detection and coherent detection of differentially encoded phase shift keying can be closed. To close this gap for single-carrier differentially encoded phase shift keying with interleaving and convolutional encoding, Peleg et al. proposed a joint and iterative multi-symbol detection and decoding scheme that regards the differential encoding as inner component code of a serially concatenated code. Several data-, audio- and video-broadcast systems are differentially encoded multi-carrier systems and use time multiplexing of the transmitted services to reduce receiver complexity. The commonly used receiver-structure for these systems does not perform joint and iterative multi-symbol detection and decoding. The present work extends the use of the single-carrier iterative decoding scheme proposed by Peleg et al. to demodulate differentially encoded multi-carrier systems. A novel two-dimensional block-based demodulation is proposed that maintains both the multi-symbol differential detection coding gain and the reduction in receiver complexity by time-multiplexing. Simulations show that with comparable receiver-complexity, the proposed multi-carrier scheme outperforms the single-carrier scheme by ≈ 0.9 dB. Furthermore, the receiver complexity can be reduced up to a factor of four and a half compared to the single-carrier scheme. Finally, the proposed multi-carrier scheme outperforms ”classical” two-symbol differential detection with soft-decision Viterbi-decoding by ≈ 2.8 dB with one iteration and by ≈ 1.2 dB without iterations.","PeriodicalId":208094,"journal":{"name":"2010 17th International Conference on Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129711993","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: 3

Placement-aware partial reconfiguration for a class of FIR-like structures 一类类fir结构的位置感知部分重构

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478857

A. H. Gholamipour, F. Kurdahi, A. Eltawil, M. Saghir

引用次数: 3

A comparison of uplink scheduling in OFDMA and SCFDMA OFDMA与SCFDMA的上行调度比较

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478799

E. Yaacoub, Z. Dawy

引用次数: 8

Efficient Mac Layer handoff management scheme for Wireless Mesh Networks 无线网状网络的高效Mac层切换管理方案

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478777

N. Omheni, F. Zarai, L. Kamoun

引用次数: 4

Using RSUs as delegates for pervasive access to services in vehicle ad hoc networks 使用rsu作为对车辆自组织网络中服务的普遍访问的委托

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478816

Khaleel W. Mershad, H. Artail

{"title":"Using RSUs as delegates for pervasive access to services in vehicle ad hoc networks","authors":"Khaleel W. Mershad, H. Artail","doi":"10.1109/ICTEL.2010.5478816","DOIUrl":"https://doi.org/10.1109/ICTEL.2010.5478816","url":null,"abstract":"Vehicular ad hoc networks, also known as VANETs, enable vehicles which are not necessarily within the same radio transmission range to communicate with each other. In addition to allowing direct communication between vehicles, VANETs also enable vehicles to connect to Roadside Units (RSUs) which are inexpensive infrastructure that have the capability of communicating with each others and with passing by vehicles. RSUs have so far been used for various purposes such as information disseminators, traffic directories, security providers, and service directories that store information about service providers. In this paper, we propose a system that uses RSUs as delegates of users in a VANET to acquire services from service providers without the users directly connecting to them. Since some of these services may require user authentication with the corresponding service providers, the system implements a method for allowing RSUs to use the user's credentials to get the requested services without jeopardizing the user's privacy. We evaluated the performance of the proposed system using the ns2 simulation software and demonstrated through comparing the results to those of an existing system the feasibility and efficiency of the new system in terms of query delay and traffic generation.","PeriodicalId":208094,"journal":{"name":"2010 17th International Conference on Telecommunications","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125489748","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

Performance analysis of a core node equipped with wavelength converter pool in an Optical Burst Switched network 光突发交换网络中配置波长转换池的核心节点性能分析

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478866

M. Morsy, Mohammed Y. S. Sowailem, H. Shalaby

引用次数: 6

Upper bound to error probability for coding on bidirectional broadcast channels 双向广播信道编码错误概率的上界

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478873

T. Oechtering, M. Skoglund

引用次数: 3

Large antenna arrays for optimal direction finding 大型天线阵列，最佳测向

2010 17th International Conference on Telecommunications Pub Date : 2010-04-04 DOI: 10.1109/ICTEL.2010.5478790

H. Gazzah

引用次数: 1