Advanced communication technologies has allowed the powerline communication (PLC) channel to be a transmission medium that enables the transferring of high-speed digital data over the classical indoor electrical wires. The development of PLC systems for Internet, voice, and data services requires models of the transfer characteristics of the mains network suitable for performance analysis by simulation. In this paper, a deterministic approach for powerline channel modelization is described. It is based on transmission lines theory to model the PLC transfer function while taking into account impedance loads of electrical appliances that can affect the channel. In order to be more representative, a measuring method of cable linear parameters is proposed.
{"title":"Deterministic modelling of powerline channels and impact of domestic appliances impedances","authors":"Hassina Chaouche, M. Tlich, P. Pagani, A. Zeddam","doi":"10.1109/WD.2008.4812853","DOIUrl":"https://doi.org/10.1109/WD.2008.4812853","url":null,"abstract":"Advanced communication technologies has allowed the powerline communication (PLC) channel to be a transmission medium that enables the transferring of high-speed digital data over the classical indoor electrical wires. The development of PLC systems for Internet, voice, and data services requires models of the transfer characteristics of the mains network suitable for performance analysis by simulation. In this paper, a deterministic approach for powerline channel modelization is described. It is based on transmission lines theory to model the PLC transfer function while taking into account impedance loads of electrical appliances that can affect the channel. In order to be more representative, a measuring method of cable linear parameters is proposed.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115551172","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}
In this paper an analytical study and novel concept of software, hardware and engineering of a new device is presented: the video surveillance local control unit (VSLC). Engineering and performance parameters of the VSLC will be evaluated. Subsequently, the state-prevent-event process of the video surveillance system will be analyzed. Accordingly, a new spectrum of applications of video surveillance systems will be introduced. It is expected to achieve new real-time features, especially in critical situations. Finally, one of the applications is considered and analyzed within a case study.
{"title":"VSLC: Video surveillance network control mobile Video Surveillance Local control engineering and applications","authors":"F. Matusek, G. Pujolle, R. Reda","doi":"10.1109/WD.2008.4812866","DOIUrl":"https://doi.org/10.1109/WD.2008.4812866","url":null,"abstract":"In this paper an analytical study and novel concept of software, hardware and engineering of a new device is presented: the video surveillance local control unit (VSLC). Engineering and performance parameters of the VSLC will be evaluated. Subsequently, the state-prevent-event process of the video surveillance system will be analyzed. Accordingly, a new spectrum of applications of video surveillance systems will be introduced. It is expected to achieve new real-time features, especially in critical situations. Finally, one of the applications is considered and analyzed within a case study.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130841681","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}
Recent rapid developments of high-speed wireless access technologies enable us to use real-time multimedia services as well as legacy non-real-time services via wireless access systems. These multimedia services require QoS (Quality of Service), such as low PLR (Packet Loss Rate) and short delay time. To provide QoS guarantee in wireless LAN (Local Area Network) environment, this paper proposes a new AP (Access Point) selection algorithm, RPFA (Real-time Prioritized Fairness Association), for large-scale wireless LAN system, which is based on capacity utilization of an AP and the number of associated stations to an AP. This algorithm is effective when real-time UDP (User datagram Protocol) traffic and non-real-time TCP (Transmission Control Protocol) traffic coexist. Simulation results show improvements of VoIP (Voice over Internet Protocol) PLR, delay time and R-values for real-time VoIP application and throughput fairness for non-real time FTP application, and also show expansion of a VoIP capacity of wireless LAN system compared to legacy algorithms.
近年来高速无线接入技术的快速发展使我们能够通过无线接入系统使用实时多媒体业务以及传统的非实时业务。这些多媒体业务要求QoS (Quality of Service)，如低丢包率(PLR)和短延迟时间。为了在无线局域网(Local Area Network)环境下提供QoS保障，本文提出了一种新的基于AP容量利用率和AP关联站点数量的大规模无线局域网系统AP (Access Point)选择算法RPFA (Real-time priority Fairness Association)。该算法在实时UDP (User datagram Protocol)流量和非实时TCP (Transmission Control Protocol)流量并存的情况下是有效的。仿真结果表明，实时VoIP应用的VoIP (Voice over Internet Protocol) PLR、延迟时间和r值得到了改善，非实时FTP应用的吞吐量公平性得到了改善，并且与传统算法相比，无线局域网系统的VoIP容量得到了扩展。
{"title":"AP selection algorithm for VoIP services in mixed traffic WLAN environment","authors":"Y. Morioka, T. Higashino, K. Tsukamoto, S. Komaki","doi":"10.1109/WD.2008.4812917","DOIUrl":"https://doi.org/10.1109/WD.2008.4812917","url":null,"abstract":"Recent rapid developments of high-speed wireless access technologies enable us to use real-time multimedia services as well as legacy non-real-time services via wireless access systems. These multimedia services require QoS (Quality of Service), such as low PLR (Packet Loss Rate) and short delay time. To provide QoS guarantee in wireless LAN (Local Area Network) environment, this paper proposes a new AP (Access Point) selection algorithm, RPFA (Real-time Prioritized Fairness Association), for large-scale wireless LAN system, which is based on capacity utilization of an AP and the number of associated stations to an AP. This algorithm is effective when real-time UDP (User datagram Protocol) traffic and non-real-time TCP (Transmission Control Protocol) traffic coexist. Simulation results show improvements of VoIP (Voice over Internet Protocol) PLR, delay time and R-values for real-time VoIP application and throughput fairness for non-real time FTP application, and also show expansion of a VoIP capacity of wireless LAN system compared to legacy algorithms.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123582712","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}
The advantage of mobile penetration enables mobile operators to provide value added service such as secured mobile banking, mobile commerce and provide enhanced security for internet banking. Mobile banking is attractive because it is a convenient approach to perform banking from any where any time, but there are security concerns in the implementation, which include problems with GSM, network, SMS, GPRS protocols. In this paper an end-to-end security framework using PKI for mobile banking is proposed. Performance of the proposed model is presented in this paper.
{"title":"Performance evaluation on end-to-end security architecture for mobile banking system","authors":"C. Narendiran, S. Rabara, N. Rajendran","doi":"10.1109/WD.2008.4812913","DOIUrl":"https://doi.org/10.1109/WD.2008.4812913","url":null,"abstract":"The advantage of mobile penetration enables mobile operators to provide value added service such as secured mobile banking, mobile commerce and provide enhanced security for internet banking. Mobile banking is attractive because it is a convenient approach to perform banking from any where any time, but there are security concerns in the implementation, which include problems with GSM, network, SMS, GPRS protocols. In this paper an end-to-end security framework using PKI for mobile banking is proposed. Performance of the proposed model is presented in this paper.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122133992","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}
The need for location aware applications is increasing with the popularity of ubiquitous computing. Localization which is the process of estimating the location of a node is an important building block in these location aware applications. In a typical localization technique, beacons whose locations are known a priori, acts as reference in estimating the location of user nodes. It has been observed that the placement and density of these beacons have strong impact on the accuracy of localization. The intuitive approaches - uniform and dense beacon placement will not suffice in practical situations due to the presence of nonuniform obstructions and self interference of beacons which results in non-uniform signal propagation error. The effect of beacon density on localization error is characterized as decrease in error with increase in beacon density up to a point termed as threshold density and there after the effect is minimal. The number of beacons that will be in range at this threshold density is threshold degree muthresh. To address the problems of uniform and dense placement, we will present a novel beacon placement algorithm in this paper which uses greedy approach, to achieve threshold degree condition at all points and observed an improvement in accuracy over uniform placement.
{"title":"A greedy approach to beacon placement for localization","authors":"V. Rani, S. Raghavan","doi":"10.1109/WD.2008.4812879","DOIUrl":"https://doi.org/10.1109/WD.2008.4812879","url":null,"abstract":"The need for location aware applications is increasing with the popularity of ubiquitous computing. Localization which is the process of estimating the location of a node is an important building block in these location aware applications. In a typical localization technique, beacons whose locations are known a priori, acts as reference in estimating the location of user nodes. It has been observed that the placement and density of these beacons have strong impact on the accuracy of localization. The intuitive approaches - uniform and dense beacon placement will not suffice in practical situations due to the presence of nonuniform obstructions and self interference of beacons which results in non-uniform signal propagation error. The effect of beacon density on localization error is characterized as decrease in error with increase in beacon density up to a point termed as threshold density and there after the effect is minimal. The number of beacons that will be in range at this threshold density is threshold degree muthresh. To address the problems of uniform and dense placement, we will present a novel beacon placement algorithm in this paper which uses greedy approach, to achieve threshold degree condition at all points and observed an improvement in accuracy over uniform placement.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121386002","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}
Distributed uplink scheduling in CDMA systems is considered. Mobiles are allowed more autonomy in making transmission decisions in a scenario based on probabilistic on-off scheduling with and without token bucket constraints. The system model with omnidirectional antennas is generalized to the case where adaptive antennas are deployed at the base stations. Uniform linear antenna arrays with varying number of elements are proposed and their performance is compared to the omnidirectional case, showing substantial throughput gains.
{"title":"Distributed on-off uplink scheduling in CDMA systems with adaptive antenna arrays","authors":"E. Yaacoub, Z. Dawy, A. El-Hajj, K. Kabalan","doi":"10.1109/WD.2008.4812825","DOIUrl":"https://doi.org/10.1109/WD.2008.4812825","url":null,"abstract":"Distributed uplink scheduling in CDMA systems is considered. Mobiles are allowed more autonomy in making transmission decisions in a scenario based on probabilistic on-off scheduling with and without token bucket constraints. The system model with omnidirectional antennas is generalized to the case where adaptive antennas are deployed at the base stations. Uniform linear antenna arrays with varying number of elements are proposed and their performance is compared to the omnidirectional case, showing substantial throughput gains.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116155867","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}
We consider the synchronization problem in an uplink multiuser filtered multitone (FMT) modulated system. It differs from OFDMA in the deployment of sub-channel shaping filters. User multiplexing is still accomplished by partitioning the tones among the active users. Users are asynchronous such that the received signals experience independent time offsets, carrier frequency offsets, and multipath fading. We consider the synchronization problem in a novel multiuser receiver that comprises two efficiently implemented fractionally spaced analysis filter banks. In this receiver time/frequency compensation can be jointly done for all users. Despite its lower complexity we show that this receiver approaches the performance of single user FMT.
{"title":"Synchronization for an efficient multiuser filtered multitone receiver","authors":"A. Tonello, F. Pecile","doi":"10.1109/WD.2008.4812846","DOIUrl":"https://doi.org/10.1109/WD.2008.4812846","url":null,"abstract":"We consider the synchronization problem in an uplink multiuser filtered multitone (FMT) modulated system. It differs from OFDMA in the deployment of sub-channel shaping filters. User multiplexing is still accomplished by partitioning the tones among the active users. Users are asynchronous such that the received signals experience independent time offsets, carrier frequency offsets, and multipath fading. We consider the synchronization problem in a novel multiuser receiver that comprises two efficiently implemented fractionally spaced analysis filter banks. In this receiver time/frequency compensation can be jointly done for all users. Despite its lower complexity we show that this receiver approaches the performance of single user FMT.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124109989","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}
IEEE 802.11s wireless LAN mesh network technology is the next step in the evolution of wireless architecture. A WLAN mesh network consists of WLAN devices with relay functions that communicate directly. In this type of networks, path selection is based on two protocols: RM-AODV and RAOLSR. These protocols use MAC addresses (layer 2 routing) and use a radio-aware routing metric for the calculation of paths. This paper presents a study of the performance of the proposed path selection algorithms under different scenarios and a comparison with hop count routing protocols AODV and OLSR.
{"title":"Performance comparison of hop count and radio aware path selection protocols in IEEE 802.11s WLAN mesh networks","authors":"S. Ghannay, S. Gammar, F. Kamoun","doi":"10.1109/WD.2008.4812906","DOIUrl":"https://doi.org/10.1109/WD.2008.4812906","url":null,"abstract":"IEEE 802.11s wireless LAN mesh network technology is the next step in the evolution of wireless architecture. A WLAN mesh network consists of WLAN devices with relay functions that communicate directly. In this type of networks, path selection is based on two protocols: RM-AODV and RAOLSR. These protocols use MAC addresses (layer 2 routing) and use a radio-aware routing metric for the calculation of paths. This paper presents a study of the performance of the proposed path selection algorithms under different scenarios and a comparison with hop count routing protocols AODV and OLSR.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126182447","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}
Today, we are in a world where several radio networks arise: we speak about mobile networks, wireless networks (IEEE 802.11, .15, .16, .20, .21...), networks of sensors, radio-frequency identification networks (RFID) and more generally networks of ldquoThings connected via radio interfacerdquo. In this heterogeneous environment, a user with a multi-interface terminal can have access to the networks of various technologies with a continuous connectivity; this is the notion of always best connected (ABC). Access selection is the key functional block in ABC networks, that's why the selection decision of a network must be based on several criteria or parameters and must be made in a dynamic way. This paper presents a new algorithm of selection based on the QoS needs of the user, by taking into consideration a better traffic distribution between the various networks of the same operator.
{"title":"A new access selection strategy in heterogeneous wireless networks based on traffic distribution","authors":"Jamal Haydar, A. Ibrahim, G. Pujolle","doi":"10.1109/WD.2008.4812883","DOIUrl":"https://doi.org/10.1109/WD.2008.4812883","url":null,"abstract":"Today, we are in a world where several radio networks arise: we speak about mobile networks, wireless networks (IEEE 802.11, .15, .16, .20, .21...), networks of sensors, radio-frequency identification networks (RFID) and more generally networks of ldquoThings connected via radio interfacerdquo. In this heterogeneous environment, a user with a multi-interface terminal can have access to the networks of various technologies with a continuous connectivity; this is the notion of always best connected (ABC). Access selection is the key functional block in ABC networks, that's why the selection decision of a network must be based on several criteria or parameters and must be made in a dynamic way. This paper presents a new algorithm of selection based on the QoS needs of the user, by taking into consideration a better traffic distribution between the various networks of the same operator.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126097455","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}
In the context of FP7 research program, the ICT OMEGA European project [1] aims to define and demonstrate gigabit home networks (the project started in 2008 and will have a duration of 3 years). Consumers require networks to be simple to install, without the need of any new wire. To achieve this, gigabit radio links and wireless optical communications will provide wireless connectivity within the home and its surroundings. Power-line communications potentially combined with robust RF will provide a home backbone ldquowithout new wires.rdquo To make this network ubiquitous, seamless and robust a technology-independent MAC layer will ensure its global control and provide connectivities to any number of devices the user wishes to connect to it in any room in a house or a flat. In order to make this vision come true, the OMEGA project aims to provide substantial progress in the fields of optical-wireless and PLC physical layers, in protocol design, and in systems architectures.
{"title":"Technology convergence for future home networks","authors":"Jean-Philippe Javaudin, M. Bellec","doi":"10.1109/WD.2008.4812826","DOIUrl":"https://doi.org/10.1109/WD.2008.4812826","url":null,"abstract":"In the context of FP7 research program, the ICT OMEGA European project [1] aims to define and demonstrate gigabit home networks (the project started in 2008 and will have a duration of 3 years). Consumers require networks to be simple to install, without the need of any new wire. To achieve this, gigabit radio links and wireless optical communications will provide wireless connectivity within the home and its surroundings. Power-line communications potentially combined with robust RF will provide a home backbone ldquowithout new wires.rdquo To make this network ubiquitous, seamless and robust a technology-independent MAC layer will ensure its global control and provide connectivities to any number of devices the user wishes to connect to it in any room in a house or a flat. In order to make this vision come true, the OMEGA project aims to provide substantial progress in the fields of optical-wireless and PLC physical layers, in protocol design, and in systems architectures.","PeriodicalId":247938,"journal":{"name":"2008 1st IFIP Wireless Days","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132015153","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}
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