Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632157
A. Oloyede, D. Grace
This paper proposes an energy efficient generic pricing algorithm for dynamic spectrum management in soft real time, using a sealed bid auction with reserve price. A green payment is introduced to serve as an incentive to prioritise power efficient users, along with a Dynamic Spectrum Access based system to allow users gain access on short term basis to the unused spectrum. The paper examines the need for a reserve price and it shows how a reserve price is beneficial to both the wireless service provider (WSP) and the users. Results show how the level of the green payment can be used to control the amount of energy saved in a wireless system. They also highlight how discriminatory pricing along with the green payment is the appropriate way to help prioritise energy efficient users.
{"title":"Energy efficient soft real-time spectrum auction for dynamic spectrum access","authors":"A. Oloyede, D. Grace","doi":"10.1109/ICTEL.2013.6632157","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632157","url":null,"abstract":"This paper proposes an energy efficient generic pricing algorithm for dynamic spectrum management in soft real time, using a sealed bid auction with reserve price. A green payment is introduced to serve as an incentive to prioritise power efficient users, along with a Dynamic Spectrum Access based system to allow users gain access on short term basis to the unused spectrum. The paper examines the need for a reserve price and it shows how a reserve price is beneficial to both the wireless service provider (WSP) and the users. Results show how the level of the green payment can be used to control the amount of energy saved in a wireless system. They also highlight how discriminatory pricing along with the green payment is the appropriate way to help prioritise energy efficient users.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114379074","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632091
Wael Guibène, D. Slock
In this paper, we propose to study the spectrum awareness also called classification of various signals enabling the OFDM-based cognitive radio systems (CRS). In order to do so, some key properties relevant to the detection of the OFDM-based third-Generation Partnership Project Long Term Evolution (3GPP LTE) and digital video broadcast for terrestrial TV (DVB-T) signals as well as programme-making and special events (PMSE) signals are derived and a robust classification scheme based on parallel standards discrimination is derived. Simulations results for the proposed technique show its effectiveness and robustness to additive white Gaussian noise channels as well as Rayleigh multipath fading plus shadowing channels.
{"title":"Signal classification in heterogeneous OFDM-based cognitive radio systems","authors":"Wael Guibène, D. Slock","doi":"10.1109/ICTEL.2013.6632091","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632091","url":null,"abstract":"In this paper, we propose to study the spectrum awareness also called classification of various signals enabling the OFDM-based cognitive radio systems (CRS). In order to do so, some key properties relevant to the detection of the OFDM-based third-Generation Partnership Project Long Term Evolution (3GPP LTE) and digital video broadcast for terrestrial TV (DVB-T) signals as well as programme-making and special events (PMSE) signals are derived and a robust classification scheme based on parallel standards discrimination is derived. Simulations results for the proposed technique show its effectiveness and robustness to additive white Gaussian noise channels as well as Rayleigh multipath fading plus shadowing channels.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114986491","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632076
J. Baranda, P. Henarejos, C. Gavrincea
The aim of this paper is to present an implementation of a functional IEEE 802.15.7 real-time testbed based on the Software Defined Radio (SDR) concept. This implementation is built with low cost commercial off-the-shelf (COTS) analog devices and the use of Universal Software Radio Peripheral version 2 (USRP2) equipment combined with a generic object-oriented framework that takes advantage of several open source software libraries. The prototype is validated in a controlled laboratory environment with an over-the-air measurement campaign.
{"title":"An SDR implementation of a visible light communication system based on the IEEE 802.15.7 standard","authors":"J. Baranda, P. Henarejos, C. Gavrincea","doi":"10.1109/ICTEL.2013.6632076","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632076","url":null,"abstract":"The aim of this paper is to present an implementation of a functional IEEE 802.15.7 real-time testbed based on the Software Defined Radio (SDR) concept. This implementation is built with low cost commercial off-the-shelf (COTS) analog devices and the use of Universal Software Radio Peripheral version 2 (USRP2) equipment combined with a generic object-oriented framework that takes advantage of several open source software libraries. The prototype is validated in a controlled laboratory environment with an over-the-air measurement campaign.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132803115","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632151
Adrian Kliks, N. Dimitriou, A. Zalonis, O. Holland
This paper tackles the problem of resource-efficient traffic management through the application of the WiFi offloading concept in cellular networks. It presents the concept of an Integrated Femto-WiFi Network, and analyzes two radio-resource management strategies from the cost and energy-efficiency perspectives. It strives to assess and discuss the benefits for the network operator of applying the proposed intelligent dynamic traffic distribution among femto and WiFi networks. It shows that such solutions can be used not only for load balancing but also for energy saving since they provide the option of switching down unused base stations, leading this in `greener' system operation solutions.
{"title":"WiFi traffic offloading for energy saving","authors":"Adrian Kliks, N. Dimitriou, A. Zalonis, O. Holland","doi":"10.1109/ICTEL.2013.6632151","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632151","url":null,"abstract":"This paper tackles the problem of resource-efficient traffic management through the application of the WiFi offloading concept in cellular networks. It presents the concept of an Integrated Femto-WiFi Network, and analyzes two radio-resource management strategies from the cost and energy-efficiency perspectives. It strives to assess and discuss the benefits for the network operator of applying the proposed intelligent dynamic traffic distribution among femto and WiFi networks. It shows that such solutions can be used not only for load balancing but also for energy saving since they provide the option of switching down unused base stations, leading this in `greener' system operation solutions.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116192516","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632082
H. Scheck, Susanna Kallio
Greenhouse gas emissions (GHG) and the resulting global warming ignited an intensive debate and work on energy consumption, GHG emissions and the overall environmental impact assessment of the Telecom industry and the ICT sector. Initial studies focused on GHG emissions caused by the energy consumption during the use phase, followed by a more detailed analysis of GHG emissions during the complete lifecycle and reached now a level where the total environmental impact is addressed in 15 different impact categories from raw material extraction to end of life of a product (life cycle assessment, LCA). However, the complexity of addressing all the different categories and especially the question of how to weight the different categories is unsolved. For Telecom networks a possible solution is to focus on overall energy consumption in all life cycle stages.
{"title":"Methods and standards for environmental impact assessment of mobile radio networks","authors":"H. Scheck, Susanna Kallio","doi":"10.1109/ICTEL.2013.6632082","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632082","url":null,"abstract":"Greenhouse gas emissions (GHG) and the resulting global warming ignited an intensive debate and work on energy consumption, GHG emissions and the overall environmental impact assessment of the Telecom industry and the ICT sector. Initial studies focused on GHG emissions caused by the energy consumption during the use phase, followed by a more detailed analysis of GHG emissions during the complete lifecycle and reached now a level where the total environmental impact is addressed in 15 different impact categories from raw material extraction to end of life of a product (life cycle assessment, LCA). However, the complexity of addressing all the different categories and especially the question of how to weight the different categories is unsolved. For Telecom networks a possible solution is to focus on overall energy consumption in all life cycle stages.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125224799","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632125
N. Madrane, A. Sekkaki, Said Jai-Andaloussi
This paper presents a video coding and decoding technique based on vector quantization. The objective is to develop a lightweight, efficient and real-time video decoder able to decode in real-time several video streams simultaneously, on low-end hardware. We show how to layout the output bitstream in order to facilitate decoding on highly constrained devices. Experiments show that it is possible to bring high quality, fullscreen rendering of concurrent video clips on devices that have very limited processing power.
{"title":"Lightweight real-time decoding of video on J2ME devices","authors":"N. Madrane, A. Sekkaki, Said Jai-Andaloussi","doi":"10.1109/ICTEL.2013.6632125","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632125","url":null,"abstract":"This paper presents a video coding and decoding technique based on vector quantization. The objective is to develop a lightweight, efficient and real-time video decoder able to decode in real-time several video streams simultaneously, on low-end hardware. We show how to layout the output bitstream in order to facilitate decoding on highly constrained devices. Experiments show that it is possible to bring high quality, fullscreen rendering of concurrent video clips on devices that have very limited processing power.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"103 13","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120819043","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632070
Hermano Pereira, Edgard Jamhour
Today, intrusion detection systems (IDS) are indispensable to protect environments that provide information via Internet. In the present trend of self-organizing and self-protecting system, a special type of IDS that operates by non-supervised learning is an interesting approach. This type of IDS is able to extract models of behavior of the environment without the need of prior knowledge about attacks or signatures. One of the techniques used to create such models is data clustering, where patterns of data access are collected and grouped to create IDS rules. In this paper we focus on the development of a non-supervised IDS for protecting Web servers from attacks using malicious HTTP access patterns. We propose a heuristic method for assigning labels to groups considering simultaneously the source and the content of the HTTP requests. The proposed method is completely self-organized, and does not require configuration or signature updates to prepare the IDS to detect new forms of attacks. Our evaluation shows that the proposed method yield fewer false positive alerts when compared to similar non-supervised methods in the literature.
{"title":"A clustering-based method for intrusion detection in web servers","authors":"Hermano Pereira, Edgard Jamhour","doi":"10.1109/ICTEL.2013.6632070","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632070","url":null,"abstract":"Today, intrusion detection systems (IDS) are indispensable to protect environments that provide information via Internet. In the present trend of self-organizing and self-protecting system, a special type of IDS that operates by non-supervised learning is an interesting approach. This type of IDS is able to extract models of behavior of the environment without the need of prior knowledge about attacks or signatures. One of the techniques used to create such models is data clustering, where patterns of data access are collected and grouped to create IDS rules. In this paper we focus on the development of a non-supervised IDS for protecting Web servers from attacks using malicious HTTP access patterns. We propose a heuristic method for assigning labels to groups considering simultaneously the source and the content of the HTTP requests. The proposed method is completely self-organized, and does not require configuration or signature updates to prepare the IDS to detect new forms of attacks. Our evaluation shows that the proposed method yield fewer false positive alerts when compared to similar non-supervised methods in the literature.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121532533","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632148
F. Casadevall, A. Umbert
The knowledge of the statistical characterization of the primary user activity can make more efficient the spectrum selection techniques, which are a key technology to improve the Cognitive Radio (CR) systems performance. In order to provide this kind of primary user information, Radio Environment Maps (REM) data bases has been proposed. This paper presents a REM-based Real Time Testbed designed to validate and exploit the dynamicity of the REM data base to improve the performances of the Radio Resource Management (RRM) algorithms in the context of cognitive radio. The implemented testbed is a flexible HW/SW tool able to use spectrum measurements in licensed bands and validate the Cognitive Radio performance of the secondary users, without causing any interference on these primary users. In particular, the RRM strategy under study in the testbed envisages the optimization of the spectrum selection policy when secondary users, with different service profiles, access opportunistically a set of channels during the inactivity periods of primary users. The selection is done taking as input the statistical characterization of the primary user activity, which will be stored in the REM data base, and the secondary user service profiles.
{"title":"REM-based real time testbed: A proof of concept on the benefits of using REM for improving radio resource management capabilities","authors":"F. Casadevall, A. Umbert","doi":"10.1109/ICTEL.2013.6632148","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632148","url":null,"abstract":"The knowledge of the statistical characterization of the primary user activity can make more efficient the spectrum selection techniques, which are a key technology to improve the Cognitive Radio (CR) systems performance. In order to provide this kind of primary user information, Radio Environment Maps (REM) data bases has been proposed. This paper presents a REM-based Real Time Testbed designed to validate and exploit the dynamicity of the REM data base to improve the performances of the Radio Resource Management (RRM) algorithms in the context of cognitive radio. The implemented testbed is a flexible HW/SW tool able to use spectrum measurements in licensed bands and validate the Cognitive Radio performance of the secondary users, without causing any interference on these primary users. In particular, the RRM strategy under study in the testbed envisages the optimization of the spectrum selection policy when secondary users, with different service profiles, access opportunistically a set of channels during the inactivity periods of primary users. The selection is done taking as input the statistical characterization of the primary user activity, which will be stored in the REM data base, and the secondary user service profiles.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117123027","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632135
Yuzhou Li, Min Sheng, Chungang Yang, Xiao Ma, Zhao Li
In this paper, we study the energy-delay tradeoff issue in multi-user multi-antenna downlink communication systems. We formulate this problem as a stochastic optimization model subjected to stability and users' rate requirements to minimize the base station (BS) long-term energy consumption. The proposed algorithm works without requiring any knowledge of traffic arrival rates and channel statistics. However, it yields an average power expenditure arbitrarily approaching the theoretically minimum value achieved by an algorithm optimized with complete knowledge of future events. Further, we mathematically depict the tradeoff between BS long-term energy consumption and uses delay by a control parameter. Simulation results demonstrate the adaptivity and robustness of the proposed algorithm to channel conditions and traffic arrivals.
{"title":"Energy-delay tradeoffs for multi-user multi-antenna downlink communication systems","authors":"Yuzhou Li, Min Sheng, Chungang Yang, Xiao Ma, Zhao Li","doi":"10.1109/ICTEL.2013.6632135","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632135","url":null,"abstract":"In this paper, we study the energy-delay tradeoff issue in multi-user multi-antenna downlink communication systems. We formulate this problem as a stochastic optimization model subjected to stability and users' rate requirements to minimize the base station (BS) long-term energy consumption. The proposed algorithm works without requiring any knowledge of traffic arrival rates and channel statistics. However, it yields an average power expenditure arbitrarily approaching the theoretically minimum value achieved by an algorithm optimized with complete knowledge of future events. Further, we mathematically depict the tradeoff between BS long-term energy consumption and uses delay by a control parameter. Simulation results demonstrate the adaptivity and robustness of the proposed algorithm to channel conditions and traffic arrivals.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125576883","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}
Pub Date : 2013-05-06DOI: 10.1109/ICTEL.2013.6632162
Tero Kivimäki, T. Vuorela, Miika Valtonen, J. Vanhala
This paper presents a short reliability analysis of the passive and device-free human positioning system called TileTrack. The presented tracking system is fully unobtrusive and requires the user to neither to wear any tags nor to perform any special action, such as talk, to be tracked. Thus, it promotes the concept of calm technology by pushing the sensing actions to the background. The system uses capacitive measurements to determine the placement of feet on different transmitting floor segments. The system's reliability and capability to track moving humans was tested in a real apartment, and the test results are presented as well as analyzed in this paper.
{"title":"Reliability of the TileTrack capacitive user tracking system in smart home environment","authors":"Tero Kivimäki, T. Vuorela, Miika Valtonen, J. Vanhala","doi":"10.1109/ICTEL.2013.6632162","DOIUrl":"https://doi.org/10.1109/ICTEL.2013.6632162","url":null,"abstract":"This paper presents a short reliability analysis of the passive and device-free human positioning system called TileTrack. The presented tracking system is fully unobtrusive and requires the user to neither to wear any tags nor to perform any special action, such as talk, to be tracked. Thus, it promotes the concept of calm technology by pushing the sensing actions to the background. The system uses capacitive measurements to determine the placement of feet on different transmitting floor segments. The system's reliability and capability to track moving humans was tested in a real apartment, and the test results are presented as well as analyzed in this paper.","PeriodicalId":430600,"journal":{"name":"ICT 2013","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115519142","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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