Pub Date : 2018-09-01DOI: 10.1109/CAMAD.2018.8514958
H. Albonda, J. Pérez-Romero
Sidelink (SL) communication underlying cellular networks is a new paradigm that has been proposed to enhance the performance of cellular networks and support vehicle-to-everything (V2X) communications that enable vehicles to collaborate with other vehicles, devices, and infrastructures. In this way, vehicle-to-vehicle (V2V) communications can be performed using two communication modes, namely cellular communication based on uplink/downlink and direct V2V communications using sidelink. By properly selecting the operating mode according to the requirements of V2X services, significant operational benefits and efficient utilization of the spectrum can be achieved. In this paper, we propose a mode selection algorithm to avoid overload in the sidelink resources. A simulation-based analysis is presented to assess the performance of the proposed solution.
{"title":"An Efficient Mode Selection for Improving Resource Utilization in Sidelink V2X Cellular Networks","authors":"H. Albonda, J. Pérez-Romero","doi":"10.1109/CAMAD.2018.8514958","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514958","url":null,"abstract":"Sidelink (SL) communication underlying cellular networks is a new paradigm that has been proposed to enhance the performance of cellular networks and support vehicle-to-everything (V2X) communications that enable vehicles to collaborate with other vehicles, devices, and infrastructures. In this way, vehicle-to-vehicle (V2V) communications can be performed using two communication modes, namely cellular communication based on uplink/downlink and direct V2V communications using sidelink. By properly selecting the operating mode according to the requirements of V2X services, significant operational benefits and efficient utilization of the spectrum can be achieved. In this paper, we propose a mode selection algorithm to avoid overload in the sidelink resources. A simulation-based analysis is presented to assess the performance of the proposed solution.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115699919","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514946
Elisavet Grigoriou, Theocharis Saoulidis, L. Atzori, Virginia Pilloni, P. Chatzimisios
This paper presents a distributed agent-based Quality of Experience (QoE) monitoring solution for Long Term Evolution (LTE)-Advanced Pro networks. The proposed solution relies on an approach that considers the computational complexity and the network load to adjust the frequency of measurements while considering the estimation accuracy. Accordingly, the proposed system allows the Internet Service Provider (ISP) to monitor the network QoE level accurately without overloading the network by considering different Influence Factors (IFs). Some preliminary results are shown in terms of accuracy of estimations and computational complexity in case of video streaming service.
{"title":"A QoE monitoring solution for LTE-Advanced Pro networks","authors":"Elisavet Grigoriou, Theocharis Saoulidis, L. Atzori, Virginia Pilloni, P. Chatzimisios","doi":"10.1109/CAMAD.2018.8514946","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514946","url":null,"abstract":"This paper presents a distributed agent-based Quality of Experience (QoE) monitoring solution for Long Term Evolution (LTE)-Advanced Pro networks. The proposed solution relies on an approach that considers the computational complexity and the network load to adjust the frequency of measurements while considering the estimation accuracy. Accordingly, the proposed system allows the Internet Service Provider (ISP) to monitor the network QoE level accurately without overloading the network by considering different Influence Factors (IFs). Some preliminary results are shown in terms of accuracy of estimations and computational complexity in case of video streaming service.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115761528","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514961
D. Ciambrone, S. Tennina, M. Boschi, D. Tsolkas, L. Pomante
In the frame of the CASPER project, we envision the performance evaluation of the new user-centric network and service management for future mobile networks. This paper extends our previous contribution on this subject by detailing a novel system level simulator built upon SimuLTE/OMNeT + + to assess quality of experience (QoE)-aware management policies in real LTE networking conditions with Voice over IP and video streaming traffic patterns. The results demonstrate that an accurate choice of the design parameters both at the application layer and at the network layer is paramount to achieve acceptable QoE levels over the time.
{"title":"Assessing QoE-driven management policies for VoIP and Video Streaming service provisioning","authors":"D. Ciambrone, S. Tennina, M. Boschi, D. Tsolkas, L. Pomante","doi":"10.1109/CAMAD.2018.8514961","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514961","url":null,"abstract":"In the frame of the CASPER project, we envision the performance evaluation of the new user-centric network and service management for future mobile networks. This paper extends our previous contribution on this subject by detailing a novel system level simulator built upon SimuLTE/OMNeT + + to assess quality of experience (QoE)-aware management policies in real LTE networking conditions with Voice over IP and video streaming traffic patterns. The results demonstrate that an accurate choice of the design parameters both at the application layer and at the network layer is paramount to achieve acceptable QoE levels over the time.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129450854","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514937
Othonas Soultatos, G. Spanoudakis, Konstantinos Fysarakis, Ioannis G. Askoxylakis, G. Alexandris, A. Miaoudakis, N. Petroulakis
A popular application of ambient intelligence systems constitutes of assisting living services on smart buildings. As intelligence is imported in embedded equipment, the system becomes able to provide smart services (e.g. control lights, airconditioning, provide energy management services etc.). IoT is the main enabler of such environments. However, the interconnection of these cyber-physical systems and the processing of personal data raise serious security and privacy issues. In this paper we present a framework that can guarantee Security, Privacy, Dependability and Interoperability (SPDI) in IoT. Taking advantage of the underlying IoT deployment, the proposed framework not only implements the requested smart functionality but also provide modelling and administration that can guarantee those SPDI properties. Moreover, we provide an application example of the framework in a smart building scenario.
{"title":"Towards a Security, Privacy, Dependability, Interoperability Framework for the Internet of Things","authors":"Othonas Soultatos, G. Spanoudakis, Konstantinos Fysarakis, Ioannis G. Askoxylakis, G. Alexandris, A. Miaoudakis, N. Petroulakis","doi":"10.1109/CAMAD.2018.8514937","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514937","url":null,"abstract":"A popular application of ambient intelligence systems constitutes of assisting living services on smart buildings. As intelligence is imported in embedded equipment, the system becomes able to provide smart services (e.g. control lights, airconditioning, provide energy management services etc.). IoT is the main enabler of such environments. However, the interconnection of these cyber-physical systems and the processing of personal data raise serious security and privacy issues. In this paper we present a framework that can guarantee Security, Privacy, Dependability and Interoperability (SPDI) in IoT. Taking advantage of the underlying IoT deployment, the proposed framework not only implements the requested smart functionality but also provide modelling and administration that can guarantee those SPDI properties. Moreover, we provide an application example of the framework in a smart building scenario.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116904557","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514950
I. M. Aljawarneh, P. Bellavista, Antonio Corradi, L. Foschini, R. Montanari, Andrea Zanotti
The widespread adoption of sensor-enabled and mobile ubiquitous devices has caused an avalanche of big data that is mostly geospatially tagged. Most cloud-based big data processing systems are designed for general-purpose workloads, neglecting spatial-characteristics. However, interesting analytics often seek answers for proximity-alike queries. We fill this gap by providing custom geospatial service layer atop of Apache Spark. To be more specific, we leverage Spark to design a custom spatial-aware partitioning method to boost geospatial query performances. Our results show that our patches outperform state-of-the-art implementations by significant fractions.
{"title":"In-memory Spatial-Aware Framework for Processing Proximity-Alike Queries in Big Spatial Data","authors":"I. M. Aljawarneh, P. Bellavista, Antonio Corradi, L. Foschini, R. Montanari, Andrea Zanotti","doi":"10.1109/CAMAD.2018.8514950","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514950","url":null,"abstract":"The widespread adoption of sensor-enabled and mobile ubiquitous devices has caused an avalanche of big data that is mostly geospatially tagged. Most cloud-based big data processing systems are designed for general-purpose workloads, neglecting spatial-characteristics. However, interesting analytics often seek answers for proximity-alike queries. We fill this gap by providing custom geospatial service layer atop of Apache Spark. To be more specific, we leverage Spark to design a custom spatial-aware partitioning method to boost geospatial query performances. Our results show that our patches outperform state-of-the-art implementations by significant fractions.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124410851","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514948
J. Pérez-Romero, Vincenzo Riccobene, Florian Schmidt, O. Sallent, Elisa Jimeno, J. Fernandez, Adam Flizikowski, I. Giannoulakis, E. Kafetzakis
With the wide range of application scenarios and associated requirements expected for the Fifth Generation (5G) networks, the increased complexity in the management of the network will require smart mechanisms able to collect a multitude of different metrics and to analyse them to extract the knowledge that can drive an efficient decision making. For this reason, future networks are expected to incorporate telemetry and analytics tools able to support the different management procedures. In this context, this paper presents the monitoring and analytics framework that is being developed by the 5G ESSENCE project for optimising the provision of Small Cell as a Service in multi-tenant scenarios. The paper discusses the different components of the framework and illustrates its capabilities for the optimisation of the cloud resource allocation and the Radio Access Network.
{"title":"Monitoring and Analytics for the Optimisation of Cloud Enabled Small Cells","authors":"J. Pérez-Romero, Vincenzo Riccobene, Florian Schmidt, O. Sallent, Elisa Jimeno, J. Fernandez, Adam Flizikowski, I. Giannoulakis, E. Kafetzakis","doi":"10.1109/CAMAD.2018.8514948","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514948","url":null,"abstract":"With the wide range of application scenarios and associated requirements expected for the Fifth Generation (5G) networks, the increased complexity in the management of the network will require smart mechanisms able to collect a multitude of different metrics and to analyse them to extract the knowledge that can drive an efficient decision making. For this reason, future networks are expected to incorporate telemetry and analytics tools able to support the different management procedures. In this context, this paper presents the monitoring and analytics framework that is being developed by the 5G ESSENCE project for optimising the provision of Small Cell as a Service in multi-tenant scenarios. The paper discusses the different components of the framework and illustrates its capabilities for the optimisation of the cloud resource allocation and the Radio Access Network.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124665763","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514974
C. Tamburini, Matteo Pizzotti, M. Dini, M. Crescentini, M. Tartagni, A. Romani, F. Alimenti, M. Virili, P. Mezzanotte, L. Roselli
This paper presents a battery-less CMOS integrated RF tag with sensing and localization capabilities. In order to allow tag addressing, communication, and localization by external readers, the IC performs a back-scattering modulation of a sequence of received UWB pulses according to specific spreading codes. For this purpose a UWB RF switch is designed and connected to the UWB antenna. The adoption of backscattering is integral to achieve ultra-low power wireless communication. The use of quasi-orthogonal spreading codes allows communication and localization with multiple tags at the same time. The IC includes a low-power sensing interface suitable for internal temperature sensing or external capacitive sensors. The power required for operation is scavenged from an UHF signal and converted by means of an internal RF rectifier and of a dynamically reconfigurable charge pump circuit. An on-chip micropower oscillator clocks a digital control circuit. The circuit is implemented in a $0.18 mu mathrm{m}$ CMOS process. The architecture of the IC and preliminary test results are disclosed.
本文提出了一种具有传感和定位功能的无电池CMOS集成射频标签。为了允许标签寻址、通信和外部读取器的定位，IC根据特定的扩展代码对接收到的UWB脉冲序列进行反向散射调制。为此，设计了一个超宽带射频开关并将其连接到超宽带天线上。采用后向散射技术是实现超低功耗无线通信的必要条件。准正交扩频码的使用允许多个标签同时通信和定位。该IC包括适合内部温度传感或外部电容传感器的低功耗传感接口。操作所需的功率从超高频信号中清除，并通过内部射频整流器和动态可重构电荷泵电路进行转换。片上微功率振荡器对数字控制电路进行时钟控制。电路是在$0.18 mu mathm {m}$ CMOS工艺中实现的。公开了该集成电路的结构和初步测试结果。
{"title":"A CMOS RF-Powered Tag with Sensing and Localization Capabilities","authors":"C. Tamburini, Matteo Pizzotti, M. Dini, M. Crescentini, M. Tartagni, A. Romani, F. Alimenti, M. Virili, P. Mezzanotte, L. Roselli","doi":"10.1109/CAMAD.2018.8514974","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514974","url":null,"abstract":"This paper presents a battery-less CMOS integrated RF tag with sensing and localization capabilities. In order to allow tag addressing, communication, and localization by external readers, the IC performs a back-scattering modulation of a sequence of received UWB pulses according to specific spreading codes. For this purpose a UWB RF switch is designed and connected to the UWB antenna. The adoption of backscattering is integral to achieve ultra-low power wireless communication. The use of quasi-orthogonal spreading codes allows communication and localization with multiple tags at the same time. The IC includes a low-power sensing interface suitable for internal temperature sensing or external capacitive sensors. The power required for operation is scavenged from an UHF signal and converted by means of an internal RF rectifier and of a dynamically reconfigurable charge pump circuit. An on-chip micropower oscillator clocks a digital control circuit. The circuit is implemented in a $0.18 mu mathrm{m}$ CMOS process. The architecture of the IC and preliminary test results are disclosed.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129485868","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514941
E. B. Kapisch, C. Duque, G. Tibola, J. Duarte
In order to allow the power flow control of grid-connected converters, this paper presents an improved scheme for grid fundamental frequency tracking. A comparison under frequency variation and time-varying harmonic and inter-harmonic condition is also discussed in order to show the method robustness. The scheme is based on a frequency-locked loop operating integrated with a decomposition core, which utilizes a recursive implementation of a modified Hanning filter. The frequency value information is used to perform the modulation and demodulation required to make de decomposition into the core. The compared frequency estimation scheme is based on a zero-crossing with an interpolation correction. Simulation results show that the proposed scheme is able to estimate the fundamental component, including relative quadrature companion signal and the frequency value more accurately and stably than the scheme used to perform the comparison.
{"title":"Frequency Estimation for Grid-connected Converters under Time-varying Harmonics and Inter-harmonics","authors":"E. B. Kapisch, C. Duque, G. Tibola, J. Duarte","doi":"10.1109/CAMAD.2018.8514941","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514941","url":null,"abstract":"In order to allow the power flow control of grid-connected converters, this paper presents an improved scheme for grid fundamental frequency tracking. A comparison under frequency variation and time-varying harmonic and inter-harmonic condition is also discussed in order to show the method robustness. The scheme is based on a frequency-locked loop operating integrated with a decomposition core, which utilizes a recursive implementation of a modified Hanning filter. The frequency value information is used to perform the modulation and demodulation required to make de decomposition into the core. The compared frequency estimation scheme is based on a zero-crossing with an interpolation correction. Simulation results show that the proposed scheme is able to estimate the fundamental component, including relative quadrature companion signal and the frequency value more accurately and stably than the scheme used to perform the comparison.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129717332","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514985
G. Alexandris, Vasilis Katos, S. Alexaki, George Hatzivasilis
Implementing a circular economy business model which is profitable for businesses operating physical assets, while at the same time does not conflict with strategic goals of environmental policies can be a complex and risky undertaking for a single entity, especially if the asset operator is a small-to-medium enterprise (SMEs). To mitigate this, a collaborative circular economy business model is proposed, where the circular economy cycle is materialized by assets transitioning between asset operators on a demanddriven approach. Demand itself is partially based on the asset’s state, which is described by its circular properties (location, condition, availability). The asset state and its transition between operators can be monitored by auditors and governmental regulators to ensure asset integrity and compliance with environmental targets. This common view of asset state between all parties can be enabled by blockchains and smart contracts, which can provide the underlying technology to share data with integrity, while simultaneously offering more efficient interoperability between participants. To demonstrate how this could be achieved, a conceptual asset record access and sharing mechanism is presented which is suitable for regulated environmental jurisdictions.
{"title":"Blockchains as Enablers for Auditing Cooperative Circular Economy Networks","authors":"G. Alexandris, Vasilis Katos, S. Alexaki, George Hatzivasilis","doi":"10.1109/CAMAD.2018.8514985","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514985","url":null,"abstract":"Implementing a circular economy business model which is profitable for businesses operating physical assets, while at the same time does not conflict with strategic goals of environmental policies can be a complex and risky undertaking for a single entity, especially if the asset operator is a small-to-medium enterprise (SMEs). To mitigate this, a collaborative circular economy business model is proposed, where the circular economy cycle is materialized by assets transitioning between asset operators on a demanddriven approach. Demand itself is partially based on the asset’s state, which is described by its circular properties (location, condition, availability). The asset state and its transition between operators can be monitored by auditors and governmental regulators to ensure asset integrity and compliance with environmental targets. This common view of asset state between all parties can be enabled by blockchains and smart contracts, which can provide the underlying technology to share data with integrity, while simultaneously offering more efficient interoperability between participants. To demonstrate how this could be achieved, a conceptual asset record access and sharing mechanism is presented which is suitable for regulated environmental jurisdictions.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125383674","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 : 2018-09-01DOI: 10.1109/CAMAD.2018.8514975
Placido Mursia, Italo Atzeni, D. Gesbert, L. Cottatellucci
The low-rank behavior of channel covariance matrices in massive multiple-input multiple-output (MIMO) settings can be exploited for pilot decontamination and statistical precoding. In this regard, many well-known algorithms are designed building on the assumption of signal subspace separation among user equipments (UEs), which is hardly satisfied in practice. To cope with this issue, our prior work introduced the concept of covariance shaping to enforce statistical orthogonality by exploiting the multiple antennas at the UE-side in the simple case of two UEs. This paper focuses on: i) extending the covariance shaping approach to a more general multi-user setting, and ii) evaluating its performance in several realistic scenarios, providing useful insights into its behavior and practical implementation.
{"title":"On the Performance of Covariance Shaping in Massive MIMO Systems","authors":"Placido Mursia, Italo Atzeni, D. Gesbert, L. Cottatellucci","doi":"10.1109/CAMAD.2018.8514975","DOIUrl":"https://doi.org/10.1109/CAMAD.2018.8514975","url":null,"abstract":"The low-rank behavior of channel covariance matrices in massive multiple-input multiple-output (MIMO) settings can be exploited for pilot decontamination and statistical precoding. In this regard, many well-known algorithms are designed building on the assumption of signal subspace separation among user equipments (UEs), which is hardly satisfied in practice. To cope with this issue, our prior work introduced the concept of covariance shaping to enforce statistical orthogonality by exploiting the multiple antennas at the UE-side in the simple case of two UEs. This paper focuses on: i) extending the covariance shaping approach to a more general multi-user setting, and ii) evaluating its performance in several realistic scenarios, providing useful insights into its behavior and practical implementation.","PeriodicalId":173858,"journal":{"name":"2018 IEEE 23rd International Workshop on Computer Aided Modeling and Design of Communication Links and Networks (CAMAD)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125536261","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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