Search results for "Software-Defined Radio"

showing 10 items of 12 documents

An FPGA-Based Software Defined Radio Platform for the 2.4GHz ISM Band

2006

A prototype of a Software Defined Radio (SDR) platform has been successfully designed and tested implementing a reconfigurable IEEE 802.11 and ZigBee receiver. The system exploits the reconfiguration capability of an FPGA for implementing a number of receiver configurations that share the same RF front-end. Configurations can be switched at run time, or can share the available logic and radio resource.

EngineeringRF front endRadio receiver designExploitbusiness.industrySoftware radioComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSFrequency shift keyingControl reconfigurationSoftware-defined radioRemote radio headEmbedded systemField-programmable gate arraybusinessISM bandreceived signal
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Uso de Software-Defined Radio en la enseñanza de sistemas de comunicaciones

2017

[ES] En la docencia de sistemas de comunicación hay una componente teórica elevada. La percepción de los estudiantes al estudiar estas asignaturas es negativa. Este trabajo trata de explicar la motivación y la estrategia seguida para reorientar esta percepción a partir de la introducción de elementos de “Software-Defined Radio” (SDR) y “Universal Software Radio Peripherals” (USRP) en diferentes asignaturas del Grado de Ingenier´ıa Telem´atica de la Universitat de València

:CIENCIAS TECNOLÓGICAS [UNESCO]software defined radioSoftware-Defined RadioRTL-SDRTelematicsDVB-TUNESCO::CIENCIAS TECNOLÓGICASTelemáticaingeniería telemáticaUSRPRDScomunicaciones digitalesProceedings XIII Jornadas de Ingenieria Telematica - JITEL2017
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Optimized FPGA-implementation of quadrature DDS

2003

This paper presents the optimized implementation of high performance quadrature direct digital synthesizers (DDS). Although VLSI designs and optimizations have already been discussed in the literature they may not be successfully translated into an FPGA-based technology. This work examines each phase-to-amplitude mapping technique, such as ROM compression and partitioning techniques and the CORDIC algorithm, and it proposes the most suitable structure for Virtex FPGAs in order to obtain the most efficient implementation in terms of area and throughput.

Very-large-scale integrationSignal processingVirtexDirect digital synthesizerComputer architectureComputer sciencebusiness.industrySoftware-defined radiobusinessField-programmable gate arrayDigital signal processing2002 IEEE International Symposium on Circuits and Systems. Proceedings (Cat. No.02CH37353)
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Radio measurements on a customized software defined radio module: A case study of energy detection spectrum sensing

2017

In this paper, we developed a software defined radio (SDR) system for implementing energy detection spectrum sensing. The SDR module can be used for a wide range of applications. The use of the SDR module is motivated by its high interoperability, availability for relatively cheaper prices and being software independent. Energy detection for cognitive radios is chosen for its simplicity and popularity. However, it is chosen as a representative for a very wide range of measurements and algorithms that can be implemented in the SDR. We have used probabilities of detection and false alarm with the receiver operating characteristics (ROC) curves as performance metrics for the implemented energy…

Engineeringbusiness.industryUniversal Software Radio Peripheral020208 electrical & electronic engineeringDetectorInteroperability020206 networking & telecommunications02 engineering and technologySoftware-defined radioSoftwareCognitive radio0202 electrical engineering electronic engineering information engineeringElectronic engineeringFalse alarmbusinessEnergy (signal processing)Computer hardware2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
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Active learning in digital communications with low-cost software defined radio

2021

Las comunicaciones digitales se enseñan tradicionalmente en sesiones de laboratorio desde un punto de vista teórico, utilizando plataformas de simulación. Sin embargo, el sistema de Acreditación Académica incluye la dimensión de "lo que se espera que los estudiantes sean capaces de hacer", lo que plantea la necesidad de disminuir la brecha entre las sesiones de laboratorio simuladas y un enfoque más práctico y realista. En este trabajo, proponemos una metodología para mejorar el aprendizaje de los aspectos prácticos relacionados con los cursos de Comunicaciones Digitales, así como para aumentar la motivación de los estudiantes, mediante el uso de dispositivos de radio definida por software …

Signal processingdigital communications:CIENCIAS TECNOLÓGICAS [UNESCO]Higher educationMultimediasoftware defined radioUniversal Software Radio Peripheralbusiness.industryComputer scienceTeachingEducational systemsSoftware-defined radioHigher EducationUNESCO::CIENCIAS TECNOLÓGICAScomputer.software_genreActive learningLearningbusinessHackRF OneUSRPSDRsignal processingcomputerEducational systems
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An Effective Satellite Remote Sensing Tool Combining Hardware and Software Solutions

2019

In this paper we propose a new effective remote sensing tool combining hardware and software solutions as an extension of our previous work. In greater detail the tool consists of a low cost receiver subsystem for public weather satellites and a signal and image processing module for several tasks such as signal and image enhancement, image reconstruction and cloud detection. Our solution allows to manage data from satellites effectively with low cost components and portable software solutions. We aim at sampling and processing of the modulated signal entirely in software enabled by Software Defined Radios (SDR) and CPU computational speed overcoming hardware limitation such as high receive…

Signal processingSettore ING-INF/05 - Sistemi Di Elaborazione Delle Informazioni010504 meteorology & atmospheric sciencesComputer scienceNoise (signal processing)business.industryBandwidth (signal processing)0211 other engineering and technologiesImage processing02 engineering and technologySoftware-defined radioCloud detectionRemote sensing01 natural sciencesSoftwareDemodulationWeather satelliteSatellite communicationSoftware architecturebusinessComputer hardware021101 geological & geomatics engineering0105 earth and related environmental sciences
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UDP flows in Cognitive Radios with Channel Aggregation and Fragmentation: A Test-bed Based Evaluation

2018

Channel aggregation (CA) and channel fragmentation (CF) have been studied extensively in cognitive radios (CRs) for many years. However, a test-bed evaluation for such techniques at flow level is still open. In this study, employing National Instruments devices, a test-bed is set up to evaluate the performance of UDP flows for CRs with CA and CF, considering the aspects of blocking, preemption, and throughput in probability. The measurements clearly show that there are performance improvements in applying CA and CF in CRs for UDP flows.

Computer sciencebusiness.industryFragmentation (computing)020302 automobile design & engineering020206 networking & telecommunicationsThroughput02 engineering and technologySoftware-defined radioBlocking (statistics)Cognitive radio0203 mechanical engineering0202 electrical engineering electronic engineering information engineeringbusinessCommunication channelComputer network2018 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS)
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Test-Bed Evaluation of CA and CF via a Software Defined Radio

2019

In Chaps. 3 and 4, we presented the analytical models and simulation approaches to study the impact of CA and CF on traffic flows in the single-flow single-user and the single-flow multi-user systems. In this chapter, we investigate the impact of CA and CF in a test-bed. We employ a software defined radio (SDR) from National Instruments (NI) to evaluate the performance of a CR system with user datagram protocol (UDP) flows. The adopted SDR is based on LTE protocol stack with additional functionalities that can support CA and CF, and accommodating PUs. By conducting measurements based on the test-bed system, we will be able to confirm that performance improvement can indeed be obtained by ap…

Protocol stackbusiness.industryComputer scienceEmbedded systemComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSUser Datagram ProtocolSoftware-defined radioPerformance improvementbusiness
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Low-Cost Sensor Based on SDR Platforms for TETRA Signals Monitoring

2021

The paper presents the design and implementation of an electromagnetic field monitoring sensor for the measurement of the Terrestrial Truncked Radio (TETRA) signals using low-cost software defined radio (SDR) platforms. The sensor includes: an SDR platform, a Global Positioning System (GPS) module and a hardware control module. Several SDR platforms having different resolutions of the analog–digital converters were tested in the first phase. The control module was implemented in two variants: a fixed one, using a laptop, and a mobile one, using a Raspberry Pi. The tests demonstrate the following achieved performances: instantaneous acquisition band of 5.12 MHz

business.product_categoryComputer sciencePhase (waves)TP1-118502 engineering and technology01 natural sciencesBiochemistryArticleAnalytical Chemistryelectromagnetic field monitoringSoftware portabilitylow-cost0202 electrical engineering electronic engineering information engineeringTETRA signalsElectrical and Electronic EngineeringInstrumentationsoftware defined radiobiologyDynamic rangebusiness.industryChemical technology010401 analytical chemistry020206 networking & telecommunicationsSoftware-defined radioConvertersbiology.organism_classificationAtomic and Molecular Physics and Opticsreal-time sensor0104 chemical sciencesLaptopGlobal Positioning SystemTetrabusinessComputer hardwareSensors
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HF Noise Measurements Based on Software Defined Radio Dual Receiver and Two Orthogonal Inverted Vee Antennas

2020

Increasing the data transfer rate in the High Frequency (HF) range involves enlarging the bandwidth of the channel from the standard value of 3 kHz to values of 6, 12, 24, 48 and even 96 kHz. Real-time evaluation of the noise power in the channel under such conditions is essential. This paper aims to implement an automated system for real-time measurement of noise in the HF range. It is composed of two Software Defined Radio (SDR) synchronized receivers and two orthogonal Inverted Vee antennas. Testing the system demonstrates its ability to distinguish between noise and signals generated as a result of human activity. Preliminary results of measurements performed in an urban location are co…

Noise powerNoise measurementComputer sciencebusiness.industry020209 energyAcoustics020208 electrical & electronic engineeringBandwidth (signal processing)02 engineering and technologySoftware-defined radioNoise (electronics)Software0202 electrical engineering electronic engineering information engineeringbusinessCommunication channelData rate units2020 International Conference and Exposition on Electrical And Power Engineering (EPE)
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