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2010 Fifth International Conference on Systems and Networks Communications最新文献

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MANETs from Zones to Threshold 从区域到阈值的manet
2010 Fifth International Conference on Systems and Networks Communications Pub Date : 2010-08-22 DOI: 10.1109/ICSNC.2010.54
I. Ibrahim, P. King, R. Pooley
{"title":"MANETs from Zones to Threshold","authors":"I. Ibrahim, P. King, R. Pooley","doi":"10.1109/ICSNC.2010.54","DOIUrl":"https://doi.org/10.1109/ICSNC.2010.54","url":null,"abstract":"A collection of mobile nodes in different speeds, transmission range random movement in absence of any static support of infrastructure is called a mobile adhoc network or MANET. In MANET, nodes have to announce their presence periodically and listen for their neighbors announcements broadcast to discover and learn how to reach each other. A new node is not familiar with its network topology at the beginning. Mobility and scalability are the main challenges in MANETs, with mobility implying a non predictable topology and stale routes, while scalability means more traffic and overhead control packets. Hence, efficient routing algorithms are needed to make the communication between the mobile nodes possible, easy and reliable over multi-hop paths, consisting of several links, dynamic and non predictable topology in a way that saves the network resources as much as necessary. We have previously developed and presented a multipath zones routing protocol (MDVZRP). It is based on a technique that provides multiple alternative paths between each source and destination in a network; the benefit of this bandwidth, and security improvements. In this paper, the MDVZRP algorithm is changed from zones based technique to threshold technique. The significance of the selection of MDVZRP's parameters optimum values of RREQ Threshold and RREQ Time Out Delay came from the observation in simulation time of various scenarios using RWP technique.","PeriodicalId":152012,"journal":{"name":"2010 Fifth International Conference on Systems and Networks Communications","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123900747","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
Channel Estimation for Alamouti Coded OFDM over Time Variant Channel with Different Receivers 不同接收机下Alamouti编码OFDM时变信道的信道估计
2010 Fifth International Conference on Systems and Networks Communications Pub Date : 2010-08-22 DOI: 10.1109/ICSNC.2010.56
Bassant A. M. Ahmed, M. Sadek, S. Ramly
{"title":"Channel Estimation for Alamouti Coded OFDM over Time Variant Channel with Different Receivers","authors":"Bassant A. M. Ahmed, M. Sadek, S. Ramly","doi":"10.1109/ICSNC.2010.56","DOIUrl":"https://doi.org/10.1109/ICSNC.2010.56","url":null,"abstract":"In this paper, we investigate a semi-blind maximum a posteriori probability-based channel estimator for Alamouti coded OFDM system over time varying Rayleigh channels. This channel estimation is used to handle rapid variations of channel within a transmission block. With the estimate of the channel matrix for the Alamouti symbol interval, a zero-forcing (ZF) receiver can be applied to detect this symbol. Linear and Minimum Mean Square Error (MMSE) decoding algorithms are also introduced in this paper. These receivers take into consideration the variation of channel over two consecutive OFDM symbols, i.e., over Alamouti symbol. The performance of this estimator is compared with Least Square (LS) channel estimator via simulation. Moreover it is shown that using MMSE as a decoding algorithm provides better performance than conventional, linear or ZF decoding methods.","PeriodicalId":152012,"journal":{"name":"2010 Fifth International Conference on Systems and Networks Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122567756","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
Fusion-Aware Routing in Wireless Sensor Networks 无线传感器网络中的融合感知路由
2010 Fifth International Conference on Systems and Networks Communications Pub Date : 2010-08-22 DOI: 10.1109/ICSNC.2010.12
N. Trivedi, N. Balakrishnan
{"title":"Fusion-Aware Routing in Wireless Sensor Networks","authors":"N. Trivedi, N. Balakrishnan","doi":"10.1109/ICSNC.2010.12","DOIUrl":"https://doi.org/10.1109/ICSNC.2010.12","url":null,"abstract":"In Wireless Sensor Networks, nodes collaborate to perform a single task or a set of related tasks. Data generated by sensors is very often correlated. Data/decision fusion has been proposed to avoid redundant data occupying network bandwidth and consuming energy. In military setting, this suppression is required also to defeat cryptanalysis efforts by adversaries. However, in most existing routing algorithms, fusion is incidental. We argue that a coupling between the two can result in early fusion thereby suppression of redundant transmission and better energy conservation. This study proposes a CDMA-based cross-layer design framework that enables early fusion in an energy-efficient, deterministic and scalable manner with upper bound on delivery time. The algorithm also allows time-series measurement history to be maintained, as required by many fusion techniques.","PeriodicalId":152012,"journal":{"name":"2010 Fifth International Conference on Systems and Networks Communications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130382815","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
A Novel RSU-Based Message Authentication Scheme for VANET 一种新的基于rsu的VANET消息认证方案
2010 Fifth International Conference on Systems and Networks Communications Pub Date : 2010-08-22 DOI: 10.1109/ICSNC.2010.23
Wu Hsin-Te, Wei-Shuo Li, Su Tung-Shih, Wen-Shyong Hsiehz
{"title":"A Novel RSU-Based Message Authentication Scheme for VANET","authors":"Wu Hsin-Te, Wei-Shuo Li, Su Tung-Shih, Wen-Shyong Hsiehz","doi":"10.1109/ICSNC.2010.23","DOIUrl":"https://doi.org/10.1109/ICSNC.2010.23","url":null,"abstract":"Message authentication, to ensure the receiving message is true and coming from the claimed source, is a key issue in vehicular ad hoc network (VANET) because the message may be life-critical, traffic information, or emergence message transmitted by the strange sources. Due to the nature of realtime and high mobility in VANET message, the traditional PKI security schemes are not suitable for VANET. Aiding of roadside unit (RSU) make message authentication in VANET easily, but it is still embedded some problems: how to authenticate the message transmitted from different RSU range, and to process the vehicle’s message hand-off among different RSU communication range. This paper proposes a comprehensive message authentication scheme which enables the message authentication in intra and inter RSU range, and the hand-off within the different RSUs. The proposed scheme makes the balance in the overhead of computation and communication, and the security against the attacking. The results of efficiency analysis and comparison with the related works show the proposed scheme is a superior message authentication method in VANET.","PeriodicalId":152012,"journal":{"name":"2010 Fifth International Conference on Systems and Networks Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125631246","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: 22
Pervasive InfoStation-Based mLearning System 基于普适信息站的移动学习系统
2010 Fifth International Conference on Systems and Networks Communications Pub Date : 2010-08-01 DOI: 10.1109/ICSNC.2010.57
Ivan Ganchev, S. Stoyanov, M. O'Droma, V. Valkanova, D. Meere
{"title":"Pervasive InfoStation-Based mLearning System","authors":"Ivan Ganchev, S. Stoyanov, M. O'Droma, V. Valkanova, D. Meere","doi":"10.1109/ICSNC.2010.57","DOIUrl":"https://doi.org/10.1109/ICSNC.2010.57","url":null,"abstract":"An agent-oriented pervasive system supporting a context-aware and personalized mLearning services provision within an InfoStation-based University network is presented. The InfoStation’s middleware architecture facilitating the users’ mobile (WiFi) access to services is described. The agents’ interaction is explained in detail. An extended system architecture supporting the service personalization is also proposed.","PeriodicalId":152012,"journal":{"name":"2010 Fifth International Conference on Systems and Networks Communications","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128178353","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
Robustness of Receiver-Driven Multi-hop Wireless Network with Soft-State Connectivity Management 基于软状态连接管理的接收机驱动多跳无线网络的鲁棒性
2010 Fifth International Conference on Systems and Networks Communications Pub Date : 2010-05-27 DOI: 10.1109/ICSNC.2010.13
D. Kominami, M. Sugano, M. Murata, T. Hatauchi
{"title":"Robustness of Receiver-Driven Multi-hop Wireless Network with Soft-State Connectivity Management","authors":"D. Kominami, M. Sugano, M. Murata, T. Hatauchi","doi":"10.1109/ICSNC.2010.13","DOIUrl":"https://doi.org/10.1109/ICSNC.2010.13","url":null,"abstract":"Energy saving and ensuring robust data collection are the big subjects in realization of wireless sensor networks. In the intermittent receiver-driven data transmission (IRDT) protocol, which aims to save energy and get high reliability, communication between nodes commences when multiple receiver nodes transmit their own IDs intermittently and a sender node receives them. In this paper, we focused on the analogy between this periodic ID-transmission and a periodic message in the soft-state management. Soft state is often considered to have robustness against failures, therefore, we introduce it to IRDT for constructing a robust network. We propose a soft-state management of routing tables in IRDT, where each node uses the periodic ID-transmission not only for communication but also for update of a routing table. By computer simulation, we show that IRDT can achieve a 43.5% improvement in robustness against a sink node failure. Moreover, we show that the receiver-driven asynchronous intermittent transmission protocol suits for the soft-state management through comparison with the sender-driven asynchronous intermittent transmission protocol.","PeriodicalId":152012,"journal":{"name":"2010 Fifth International Conference on Systems and Networks Communications","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127125051","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
Prefilter Bandwidth Effects in Data Symbol Phase Synchronizers of Mixed Loop 混合环路数据符号相位同步器中的预滤波器带宽效应
2010 Fifth International Conference on Systems and Networks Communications Pub Date : 1900-01-01 DOI: 10.1109/icsnc.2010.74
A. Reis, J. P. Carvalho, J. F. Rocha, A. Gameiro
{"title":"Prefilter Bandwidth Effects in Data Symbol Phase Synchronizers of Mixed Loop","authors":"A. Reis, J. P. Carvalho, J. F. Rocha, A. Gameiro","doi":"10.1109/icsnc.2010.74","DOIUrl":"https://doi.org/10.1109/icsnc.2010.74","url":null,"abstract":"This work studies the effects of the prefilter bandwidth in the symbol synchronizers of mixed loop. The prefilter bandwidth B is switched between three values, first B1=• (infinite), after B2=2.tx and next B3=1.tx, where tx is the bit rate. The synchronizer of mixed loop is based on a tuned filter followed of a PLL (Phase Lock Loop). We consider four PLL types, namely, the analog (ana), hybrid (hib), combinational (cmb), and sequential (seq). The objective is to study the prefilter bandwidth with the four synchronizers and to evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal to Noise Ratio).","PeriodicalId":152012,"journal":{"name":"2010 Fifth International Conference on Systems and Networks Communications","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134286975","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
Prefilter Bandwidth Effects in Data Symbol Phase Synchronizers of Open Loop 开环数据符号相位同步器中的预滤波器带宽效应
2010 Fifth International Conference on Systems and Networks Communications Pub Date : 1900-01-01 DOI: 10.1109/icsnc.2010.73
A. Reis, J. P. Carvalho, J. F. Rocha, A. Gameiro
{"title":"Prefilter Bandwidth Effects in Data Symbol Phase Synchronizers of Open Loop","authors":"A. Reis, J. P. Carvalho, J. F. Rocha, A. Gameiro","doi":"10.1109/icsnc.2010.73","DOIUrl":"https://doi.org/10.1109/icsnc.2010.73","url":null,"abstract":"This work studies the effects of the prefilter bandwidth on the open loop symbol synchronizers. We consider three different prefilter bandwidth, namely, B1=• ( infinite), B2=2.tx and B3=1.tx, where tx is the transmission rate. We consider also four open loop symbol synchronizers, namely, the tank (tank), the SAW (SAW), the monostable (mon), and the astable (ast). The objective is to study the prefilter bandwidth with the four open loop symbol synchronizers and to evaluate their output jitter UIRMS (Unit Interval Root Mean Square) versus input SNR (Signal to Noise Ratio).","PeriodicalId":152012,"journal":{"name":"2010 Fifth International Conference on Systems and Networks Communications","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125867820","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
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