In this paper we present our approach regarding the implementation of new wireless radio receiver... more In this paper we present our approach regarding the implementation of new wireless radio receivers exploiting filterbank techniques, using a software-development driven approach. The fact that most of the common radio communication systems share a similar structure has been exploited to create a framework which provides a generic layout and tools to construct reconfigurable transmitters and/or receivers. By combining our own generic object-oriented framework built on top of the GNU Radio software framework with the use of the Universal Software Radio Peripheral version 2 (USRP2), we have been able to quickly implement a working proof of concept of an Uplink (UL) Filterbank Multicarrier (FBMC) receiver, both for Single-Input Single-Output (SISO) and Multiple-Input Multiple-Output (MIMO) scenario, within the 7th European framework project called PHYDYAS. As well, a description of the methodology we have applied from software engineering in order to build this demonstrator is herein included, which shows the suitability of using Software Defined Radio (SDR) technologies for fast prototyping of new wireless communication systems.
Abstract: Accurate information on position of wireless users is crucial not only for emerging loc... more Abstract: Accurate information on position of wireless users is crucial not only for emerging location-based services and applications but also for network optimization. In order to develop accurate positioning algorithms, environmental characterization of basic radio propagation mechanisms carries significant importance. In the first part of this report, a measurement campaign performed within the NEWCOM++ WPR.
ABSTRACT The context refers to “any information that can be used to characterize the situation of... more ABSTRACT The context refers to “any information that can be used to characterize the situation of an entity, where an entity can be a person, place, or physical object.” Radio context awareness is defined as the ability of detecting and estimating a system state or parameter, either globally or concerning one of its components, in a radio system for enhancing performance at the physical, network, or application layers. In this paper, we review the fundamentals of context awareness and the recent advances in the main radio techniques that increase the context awareness and smartness, posing challenges and renewed opportunities to added-value applications in the context of the next generation of wireless networks.
Abstract: The present deliverable reports research results on seamless positioning techniques dev... more Abstract: The present deliverable reports research results on seamless positioning techniques developed in the framework of the work package WPR. B on Localization and Positioning within the NEWCOM++ NoE. These results address a wide range of cutting-edge topics starting from measurements, channel modeling, parameter estimation, cognitive and cooperative positioning techniques, and arriving to Bayesian methods for data fusion and integration of hybrid positioning systems (eg, GNSS/terrestrial, radio/inertial ...
Abstract: Accurate information on position of wireless users is crucial not only for emerging loc... more Abstract: Accurate information on position of wireless users is crucial not only for emerging location-based services and applications but also for network optimization. In order to develop accurate positioning algorithms, environmental characterization of basic radio propagation mechanisms carries significant importance. In the first part of this report, a measurement campaign performed within the NEWCOM++ WPR. B workpackage is explained, which provides guidelines for environment characterization for positioning and ...
In this paper we present our approach regarding the implementation of new wireless radio receiver... more In this paper we present our approach regarding the implementation of new wireless radio receivers exploiting filterbank techniques, using a software-development driven approach. The fact that most of the common radio communication systems share a similar structure has been exploited to create a framework which provides a generic layout and tools to construct reconfigurable transmitters and/or receivers. By combining our own generic object-oriented framework built on top of the GNU Radio software framework with the use of the Universal Software Radio Peripheral version 2 (USRP2), we have been able to quickly implement a working proof of concept of an Uplink (UL) Filterbank Multicarrier (FBMC) receiver, both for Single-Input Single-Output (SISO) and Multiple-Input Multiple-Output (MIMO) scenario, within the 7th European framework project called PHYDYAS. As well, a description of the methodology we have applied from software engineering in order to build this demonstrator is herein included, which shows the suitability of using Software Defined Radio (SDR) technologies for fast prototyping of new wireless communication systems.
Abstract: Accurate information on position of wireless users is crucial not only for emerging loc... more Abstract: Accurate information on position of wireless users is crucial not only for emerging location-based services and applications but also for network optimization. In order to develop accurate positioning algorithms, environmental characterization of basic radio propagation mechanisms carries significant importance. In the first part of this report, a measurement campaign performed within the NEWCOM++ WPR.
ABSTRACT The context refers to “any information that can be used to characterize the situation of... more ABSTRACT The context refers to “any information that can be used to characterize the situation of an entity, where an entity can be a person, place, or physical object.” Radio context awareness is defined as the ability of detecting and estimating a system state or parameter, either globally or concerning one of its components, in a radio system for enhancing performance at the physical, network, or application layers. In this paper, we review the fundamentals of context awareness and the recent advances in the main radio techniques that increase the context awareness and smartness, posing challenges and renewed opportunities to added-value applications in the context of the next generation of wireless networks.
Abstract: The present deliverable reports research results on seamless positioning techniques dev... more Abstract: The present deliverable reports research results on seamless positioning techniques developed in the framework of the work package WPR. B on Localization and Positioning within the NEWCOM++ NoE. These results address a wide range of cutting-edge topics starting from measurements, channel modeling, parameter estimation, cognitive and cooperative positioning techniques, and arriving to Bayesian methods for data fusion and integration of hybrid positioning systems (eg, GNSS/terrestrial, radio/inertial ...
Abstract: Accurate information on position of wireless users is crucial not only for emerging loc... more Abstract: Accurate information on position of wireless users is crucial not only for emerging location-based services and applications but also for network optimization. In order to develop accurate positioning algorithms, environmental characterization of basic radio propagation mechanisms carries significant importance. In the first part of this report, a measurement campaign performed within the NEWCOM++ WPR. B workpackage is explained, which provides guidelines for environment characterization for positioning and ...
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Papers by M. Nájar