Pub Date : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705741
A. Xenakis, F. Foukalas, G. Stamoulis, T. Khattab
Energy-aware connectivity in wireless sensor networks (WSNs) can increase their network lifetime. This can be achieved by optimizing the power control, a particular communication mechanism and the topology control. To this end, in this paper', an energy-aware joint power, packet and topology optimization for WSNs is provided. More specifically, we assume power control based on feedback information, packet transmission through automatic-repeat-request(ARQ) mechanism and topology control assuming specific coverage constraints. This particular joint optimization problem is considered as NP-complete and heuristic methods are usually applied in such complicated cases. In particular, we employ Simulated Annealing (SA) for a step-by-step evaluation of the average energy consumption of sensor nodes, which is considered the objective function of our optimization problem. In each step of the SA algorithm, the resultant topology is evaluated and at the convergence point the near optimal transmit power and packet as well as node placements are obtained jointly.
{"title":"Energy-aware joint power, packet and topology optimization by simulated annealing for WSNs","authors":"A. Xenakis, F. Foukalas, G. Stamoulis, T. Khattab","doi":"10.1109/IEEEGCC.2013.6705741","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705741","url":null,"abstract":"Energy-aware connectivity in wireless sensor networks (WSNs) can increase their network lifetime. This can be achieved by optimizing the power control, a particular communication mechanism and the topology control. To this end, in this paper', an energy-aware joint power, packet and topology optimization for WSNs is provided. More specifically, we assume power control based on feedback information, packet transmission through automatic-repeat-request(ARQ) mechanism and topology control assuming specific coverage constraints. This particular joint optimization problem is considered as NP-complete and heuristic methods are usually applied in such complicated cases. In particular, we employ Simulated Annealing (SA) for a step-by-step evaluation of the average energy consumption of sensor nodes, which is considered the objective function of our optimization problem. In each step of the SA algorithm, the resultant topology is evaluated and at the convergence point the near optimal transmit power and packet as well as node placements are obtained jointly.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133793209","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705830
W. Alayed, N. Rikli
WiFi networks carrying IPv6 traffic with Proxy-based mobility support are to considered here. The performance of the handover function is first tested through the analysis of the effects of the packet size and inter-arrival times. Then, the sequence of events occurring during the handover period are scrutinized to observe the drawbacks that led to the obtained results. Finally, some suggestions are given to decrease the number of dropped packets, and thus improving the performance of the system.
{"title":"Analysis of the packet dropping constituency in Proxy-based mobile IPv6 over WLANs","authors":"W. Alayed, N. Rikli","doi":"10.1109/IEEEGCC.2013.6705830","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705830","url":null,"abstract":"WiFi networks carrying IPv6 traffic with Proxy-based mobility support are to considered here. The performance of the handover function is first tested through the analysis of the effects of the packet size and inter-arrival times. Then, the sequence of events occurring during the handover period are scrutinized to observe the drawbacks that led to the obtained results. Finally, some suggestions are given to decrease the number of dropped packets, and thus improving the performance of the system.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132568956","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705783
M. A. Amin, Kamalrulnizam Bib Abu Bakar, H. Al-Hashimi
The rapid growth of mobile devices and wireless networking has forced many services to be accessed by these devices. Cloud computing is transforming the Internet computing infrastructure. Since most of the services will be access from cloud through the Internet, Mobile Cloud Computing has been introduced. In this paper, cloud computing and mobile cloud computing technologies are discussed. Particularly, the architecture, characteristics, working and challenges faced by mobile cloud computing are discussed. Some challenges faced by the enterprises are also discussed which results due to the implementation of the mobile cloud computing.
{"title":"A review of mobile cloud computing architecture and challenges to enterprise users","authors":"M. A. Amin, Kamalrulnizam Bib Abu Bakar, H. Al-Hashimi","doi":"10.1109/IEEEGCC.2013.6705783","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705783","url":null,"abstract":"The rapid growth of mobile devices and wireless networking has forced many services to be accessed by these devices. Cloud computing is transforming the Internet computing infrastructure. Since most of the services will be access from cloud through the Internet, Mobile Cloud Computing has been introduced. In this paper, cloud computing and mobile cloud computing technologies are discussed. Particularly, the architecture, characteristics, working and challenges faced by mobile cloud computing are discussed. Some challenges faced by the enterprises are also discussed which results due to the implementation of the mobile cloud computing.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129239990","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705828
H. Khakzad, Reza Shakeri, Abbas Taherpour, T. Khattab
In this paper, we present an adaptive wireless communication system with energy harvesting relay where, two sources wish to send data to a destination via an energy harvesting relay that utilizes hierarchical constellation. In our proposed model, the relay based on the channel side information, adaptively decides between sending information bits of each source and saving energy, which leads to three modes of cooperation. In the first mode, after successfully decoding two sources, the relay puts the information bit of the source with lower channel amplitude in the first layer and the information bits of the other source in the second layer of the hierarchical constellation and in the second mode, the relay only transmits information bits from the source that was decodable and harvest the energy received by the other source and in the third mode that is, when the relay is not able to decode both sources, effectively, decides to stay silent and harvest the received energy from each source. We analyze the performance of these transmission modes in terms of average BER and outage probability. Our analytical results show that with non-zero energy efficiency factor, improvements in performance can be achieved in comparison with the case that the relay is not capable of harvesting energy and does not adaptively send data. In addition, we find the optimum value of the hierarchical modulation parameter in order to minimize the BER of each source.
{"title":"Adaptive hierarchical cooperative communication using energy harvesting relay","authors":"H. Khakzad, Reza Shakeri, Abbas Taherpour, T. Khattab","doi":"10.1109/IEEEGCC.2013.6705828","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705828","url":null,"abstract":"In this paper, we present an adaptive wireless communication system with energy harvesting relay where, two sources wish to send data to a destination via an energy harvesting relay that utilizes hierarchical constellation. In our proposed model, the relay based on the channel side information, adaptively decides between sending information bits of each source and saving energy, which leads to three modes of cooperation. In the first mode, after successfully decoding two sources, the relay puts the information bit of the source with lower channel amplitude in the first layer and the information bits of the other source in the second layer of the hierarchical constellation and in the second mode, the relay only transmits information bits from the source that was decodable and harvest the energy received by the other source and in the third mode that is, when the relay is not able to decode both sources, effectively, decides to stay silent and harvest the received energy from each source. We analyze the performance of these transmission modes in terms of average BER and outage probability. Our analytical results show that with non-zero energy efficiency factor, improvements in performance can be achieved in comparison with the case that the relay is not capable of harvesting energy and does not adaptively send data. In addition, we find the optimum value of the hierarchical modulation parameter in order to minimize the BER of each source.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"185 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122770732","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705837
D. Crescini, M. Lovisolo, L. Foglino, P. Crescini
The contribution focus on the subsurface real time monitoring techniques and early warning approaches dedicated to stability control of soil, civil engineering works and exploration of geophysics parameters. The electronic devices described are state-of-the-art geotechnical in-place instrument for stability control and differential monitoring of rocks, structures, in casing or borehole, designed mainly to evaluate danger levels of potentially instable areas. The systems can be assembled `in situ' forming an instrumented column, connecting the required number of modules, each containing one or more sensors and the electronic boards for data collection, logging and transmission. The standard structure of the column is composed of a sequence of hard tubular modules connected with each other by special 2D flexible junctions and contains all the electronic sensors for measurement, control and RS485 (or CANopen) transmission. Electronic control devices can support mono and biaxial inclinometers, piezometers, accelerometers, digital compasses etc., to fulfill specific requirements of the monitoring project. The link between sensors and control unit is realized with differential digital mode protocol for a maximum of 256 sensors nodes linked to the central unit basic configuration. The control unit provides for the readings at regular time intervals, according to the requested program. Remote control, download, storage and processing of data are made with a remote control station, equipped with GSM/GPRS integrated transmission and specific software.
{"title":"Subsurface real time multiparametric monitoring systems dedicated to geophysics explorations and stability control of engineering works","authors":"D. Crescini, M. Lovisolo, L. Foglino, P. Crescini","doi":"10.1109/IEEEGCC.2013.6705837","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705837","url":null,"abstract":"The contribution focus on the subsurface real time monitoring techniques and early warning approaches dedicated to stability control of soil, civil engineering works and exploration of geophysics parameters. The electronic devices described are state-of-the-art geotechnical in-place instrument for stability control and differential monitoring of rocks, structures, in casing or borehole, designed mainly to evaluate danger levels of potentially instable areas. The systems can be assembled `in situ' forming an instrumented column, connecting the required number of modules, each containing one or more sensors and the electronic boards for data collection, logging and transmission. The standard structure of the column is composed of a sequence of hard tubular modules connected with each other by special 2D flexible junctions and contains all the electronic sensors for measurement, control and RS485 (or CANopen) transmission. Electronic control devices can support mono and biaxial inclinometers, piezometers, accelerometers, digital compasses etc., to fulfill specific requirements of the monitoring project. The link between sensors and control unit is realized with differential digital mode protocol for a maximum of 256 sensors nodes linked to the central unit basic configuration. The control unit provides for the readings at regular time intervals, according to the requested program. Remote control, download, storage and processing of data are made with a remote control station, equipped with GSM/GPRS integrated transmission and specific software.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"3 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131437998","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705749
F. Pazheri, A. Al-Arainy, M. Othman, N. Malik
Due to the concern in the rising of global warming and in the dwindling supply of fossil fuels, global exploitation of renewable energy technologies is increasing spontaneously. Most of the countries in the world are blessed with two or more renewable energy sources (RES) and hence have formulated policies to boost the utilization of RES for their electricity production. In order to further develop the RES based electricity production, an assessment of renewable electricity potential is essential for further research and development related works in the field of renewable energy technologies. Recent developments in installation capacities of hydro, wind, solar, biomass and geothermal based electricity generation are discussed in this paper. From the analysis it is clear that significant amount of fuel cost and pollutants emission can be reduced by the increased use of RES based electrical power production technologies.
{"title":"Global renewable electricity potential","authors":"F. Pazheri, A. Al-Arainy, M. Othman, N. Malik","doi":"10.1109/IEEEGCC.2013.6705749","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705749","url":null,"abstract":"Due to the concern in the rising of global warming and in the dwindling supply of fossil fuels, global exploitation of renewable energy technologies is increasing spontaneously. Most of the countries in the world are blessed with two or more renewable energy sources (RES) and hence have formulated policies to boost the utilization of RES for their electricity production. In order to further develop the RES based electricity production, an assessment of renewable electricity potential is essential for further research and development related works in the field of renewable energy technologies. Recent developments in installation capacities of hydro, wind, solar, biomass and geothermal based electricity generation are discussed in this paper. From the analysis it is clear that significant amount of fuel cost and pollutants emission can be reduced by the increased use of RES based electrical power production technologies.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"25 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131520099","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705803
Ramy Salahat, Ehab Salahat, A. Hakam, Tasneem Assaf
In recent days, relay assisted cellular networks are gaining more importance in research and development because of the recent adoption of new communication standards with relaying and cooperation communication. This has introduced a multichannel diversity along with the multiuser diversity and the channel aware dynamic resource allocation models. The issue of the optimal location of relays has risen especially when dedicated relays are used as the standard proposes instead of the cooperative model of the users. In this paper, we study the optimal location of a single relay. Furthermore, we study the effect of changing the number of users on the optimal location of the relay. The effect of adding multiple relays to the system is examined. The optimal locations are examined when the relay channels are the only channels to be used by the system and when the direct channel (DT) is also available. The problem formulation assumes, Rayleigh block faded channels, half duplex regenerative (repetition coding) decode-and-forward (DF) relaying strategy, long-term average total transmitted power constraint and orthogonal multiplexing of the users messages within the channel blocks. New simple and accurate approximations to the modified Bessel functions of the first kind, zeroth order I0 (z) and first order I1 (z) are presented. The new proposed approximations are given as a simple finite sum of scaled exponential functions. Comparisons are made between the exact functions, classic approximations, and the new approximation in terms of simplicity and accuracy. The new approximation proves to be sufficiently accurate to bridge the gap between the classic large and small argument approximations and has potential applications in allowing one to analytically evaluate integrals containing Modified Bessel Functions, yielding simple closed-form solutions. A generalized closed-form expression for the average bit error rate over Nakagami-n (Rice) fading, and Rayleigh fading as a special case, are derived as sample applications, and the results are compared with Monte Carlo Simulation, where a very good matching is achieved.
{"title":"A simple and efficient approximation to the modified Bessel functions and its applications to Rician fading","authors":"Ramy Salahat, Ehab Salahat, A. Hakam, Tasneem Assaf","doi":"10.1109/IEEEGCC.2013.6705803","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705803","url":null,"abstract":"In recent days, relay assisted cellular networks are gaining more importance in research and development because of the recent adoption of new communication standards with relaying and cooperation communication. This has introduced a multichannel diversity along with the multiuser diversity and the channel aware dynamic resource allocation models. The issue of the optimal location of relays has risen especially when dedicated relays are used as the standard proposes instead of the cooperative model of the users. In this paper, we study the optimal location of a single relay. Furthermore, we study the effect of changing the number of users on the optimal location of the relay. The effect of adding multiple relays to the system is examined. The optimal locations are examined when the relay channels are the only channels to be used by the system and when the direct channel (DT) is also available. The problem formulation assumes, Rayleigh block faded channels, half duplex regenerative (repetition coding) decode-and-forward (DF) relaying strategy, long-term average total transmitted power constraint and orthogonal multiplexing of the users messages within the channel blocks. New simple and accurate approximations to the modified Bessel functions of the first kind, zeroth order I0 (z) and first order I1 (z) are presented. The new proposed approximations are given as a simple finite sum of scaled exponential functions. Comparisons are made between the exact functions, classic approximations, and the new approximation in terms of simplicity and accuracy. The new approximation proves to be sufficiently accurate to bridge the gap between the classic large and small argument approximations and has potential applications in allowing one to analytically evaluate integrals containing Modified Bessel Functions, yielding simple closed-form solutions. A generalized closed-form expression for the average bit error rate over Nakagami-n (Rice) fading, and Rayleigh fading as a special case, are derived as sample applications, and the results are compared with Monte Carlo Simulation, where a very good matching is achieved.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124814550","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705850
T. Yokoyama, Asahi Kitada
A new digital control method for permanent magnet synchronous motor based on deadbeat control and FPGA based hardware controller is proposed. Using the discrete time model of PMSM, deadbeat control law is derived via a model inverse solution. The superior calculation capability of FPGA realize the ideal digital control feedback system without any sampling compensation method. The verification of the proposed method were carried out through simulations.
{"title":"Precise torque control for interior permanent magnet synchronous motor using FPGA based hardware controller","authors":"T. Yokoyama, Asahi Kitada","doi":"10.1109/IEEEGCC.2013.6705850","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705850","url":null,"abstract":"A new digital control method for permanent magnet synchronous motor based on deadbeat control and FPGA based hardware controller is proposed. Using the discrete time model of PMSM, deadbeat control law is derived via a model inverse solution. The superior calculation capability of FPGA realize the ideal digital control feedback system without any sampling compensation method. The verification of the proposed method were carried out through simulations.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114585003","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705776
Y. Fayyad, L. Ben‐Brahim
This paper presents a Z source inverter connected to grid. The effect of voltage sags on ZSI will be studied when two different ac side control schemes are used. The paper compares the performance of both PI control and deadbeat control. The Z-source inverter employs a unique LC network to couple the inverter main circuit to the diode front end. By controlling the shoot-through duty cycle, the Z-source can theoretically produce any desired output ac voltage, even greater than the line voltage. Hence, this inerter topology provides voltage ride through capability under voltage sags. Simulation results verified the effectiveness and reliability of deadbeat control over PI control.
{"title":"Deadbeat control of Z source inverter with voltage ride-through capability","authors":"Y. Fayyad, L. Ben‐Brahim","doi":"10.1109/IEEEGCC.2013.6705776","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705776","url":null,"abstract":"This paper presents a Z source inverter connected to grid. The effect of voltage sags on ZSI will be studied when two different ac side control schemes are used. The paper compares the performance of both PI control and deadbeat control. The Z-source inverter employs a unique LC network to couple the inverter main circuit to the diode front end. By controlling the shoot-through duty cycle, the Z-source can theoretically produce any desired output ac voltage, even greater than the line voltage. Hence, this inerter topology provides voltage ride through capability under voltage sags. Simulation results verified the effectiveness and reliability of deadbeat control over PI control.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125470896","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 : 2013-11-01DOI: 10.1109/IEEEGCC.2013.6705754
E. Yaacoub
Performance enhancements of cellular networks for passengers in high speed railway systems are investigated. Relays placed on top of each train car are proposed. These relays communicate with the mobile terminals (MTs) inside the train cars on one hand and with the cellular base station (BS) on the other hand over Long Term Evolution (LTE) cellular links. In addition, dynamic LTE resource allocation is taken into account. The presence of the relays is shown to lead to significant enhancements in the effective data rates of the MTs, mainly due to the use of advanced antenna techniques.
{"title":"Enhanced connectivity in railroad networks using LTE relays with directive antennas","authors":"E. Yaacoub","doi":"10.1109/IEEEGCC.2013.6705754","DOIUrl":"https://doi.org/10.1109/IEEEGCC.2013.6705754","url":null,"abstract":"Performance enhancements of cellular networks for passengers in high speed railway systems are investigated. Relays placed on top of each train car are proposed. These relays communicate with the mobile terminals (MTs) inside the train cars on one hand and with the cellular base station (BS) on the other hand over Long Term Evolution (LTE) cellular links. In addition, dynamic LTE resource allocation is taken into account. The presence of the relays is shown to lead to significant enhancements in the effective data rates of the MTs, mainly due to the use of advanced antenna techniques.","PeriodicalId":316751,"journal":{"name":"2013 7th IEEE GCC Conference and Exhibition (GCC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116777183","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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