Dissertations / Theses on the topic 'Software defined radio receiver'
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Ödquist, Matilda. "Software-Defined Radio Receiver for IEEE 802.11n." Thesis, Linköpings universitet, Kommunikationssystem, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-170724.
Full textDon, Michael L. "A Low-Cost Software-Defined Telemetry Receiver." International Foundation for Telemetering, 2015. http://hdl.handle.net/10150/596410.
Full textThe Army Research Laboratories has developed a PCM/FM telemetry receiver using a low-cost commercial software-defined radio (SDR). Whereas traditional radio systems are implemented in hardware, much of the functionality of software-defined radios is defined in software. This gives them the flexibility to accommodate military telemetry standards as well as other specialized functions. After a brief review of telecommunication theory, this paper describes the receiver implementation on a commercial SDR platform. Data rates up to 10 Mbs were obtained through the customization the SDR's field programmable gate array.
Sanfuentes, Juan L. "Software defined radio design for synchronization of 802.11A receiver." Thesis, Monterey, California. Naval Postgraduate School, 2007. http://hdl.handle.net/10945/3197.
Full textKumar, Sumit. "Architecture for simultaneous multi-standard software defined radio receiver." Electronic Thesis or Diss., Sorbonne université, 2019. http://www.theses.fr/2019SORUS160.
Full textMotivated by the capabilities of the SDR, we theorize in this work a simultaneous multi-standard radio definition receiver (SMS-SDR). An SMS-SDR receiver will be able to "simultaneously" decode the information of several heterogeneous wireless standards using the same RF front end. Our target networks are random access networks operating in unlicensed bands. These standards operate without centralized coordination and are subject to serious interference between channels of the same type of technology (CT-CCI) because their operating frequency bands overlap. We are developing several new baseband signal processing algorithms to eliminate ICC from single and multi-antenna receivers. We chose the case of the use of narrow-band and broadband signals, paying particular attention to OFDM-based systems, OFDM being an essential physical layer technique of modern wireless standards such as IEEE families 802.11 and 4G. During development, we focus on methods that can operate autonomously in the receiver, that is, without any cooperation from the transmitter or base station. In this way, they are appropriate random access networks operating in unlicensed bands. In addition, the algorithms can be integrated into the existing infrastructure without any significant effort. Finally, our interference mitigation methods are used to develop decision trees that recommend the sequence of steps to mitigate interference between two heterogeneous signals. Finally, we validated our algorithms by implementing them using SDR
Warr, Paul. "Octave-band feedforward linearisation for software defined radio receiver amplifiers." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340270.
Full textHolstensson, Oskar. "Study of Interferer Canceling Systems in a Software Defined Radio Receiver." Thesis, Linköpings universitet, Institutionen för systemteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-92757.
Full textKoch, Mick V. "An Accessible Project 25 Receiver Using Low-Cost Software Defined Radio." Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1464007525.
Full textShetye, Kalpesh Anil. "Design and implementation of a software defined radio receiver for AM band." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/SHETYE_KALPESH_58.pdf.
Full textШвець, Валеріян Анатолійович, Volodymyr Kondratiuk, Svitlana Ilnytska, and Oleksandr Kutsenko. "Radionavigation field monitoring in the landing area using software-defined radio receiver." Thesis, National Aviation University, 2018. http://er.nau.edu.ua/handle/NAU/36846.
Full textZhang, Chen. "An ECA-Based ZigBee Receiver." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/31516.
Full textMaster of Science
Mikkelsen, Eivind Brauer. "The Design of a Low Cost Beacon Receiver System using Software Defined Radio." Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9984.
Full textDue to increase in ship traffic and activities related to oil and gas there is currently grate interest in the northern regions of Norway. Satellite communications to these areas i.e. north of the polar circle is however challenging due to low elevation angles and restricted visibility of geostationary satellites. Limited work has been done to study the propagation effects at theses latitudes and low elevation angles, especially at millimeter frequencies and for maritime communications. Some measurements have been conducted at Svalbard [5] and in Canada [5.1]. The studies from Svalbard were conducted at Ku-band frequencies whilst the Canadian measurements were conducted at 38 GHz. Non of the two did however include maritime measurements. Further measurements are therefore needed to characterize the propagation effects under these conditions. A beacon receiver is radio which is used to detect and measure the signal strength of a transmitted radio beacon signal. Beacon signals transmitted by satellites are often low power continuous wave signals intended for antenna steering and power control purposes. These signals are well suited for propagation measurement due to their constant transmits power and frequency. Propagation research often relies on beacon measurements along with other information such as weather data and radiometer readings. This thesis discusses the design and implementation of a low cost beacon receiver based on digital signal processing techniques and software defined radio. The intention was originally to design a Ka-band (20 GHz) receiver. This was however extended to a general purpose beacon receiver intended to operate at an L-band intermediate frequency. Different architectures and realizations are discussed with emphasis on costs and performance. It is shown that a 1.2 m antenna, receiving a Ka-band beacon with, 9 dBW EIRP would produce a signal level of about -130 dBm at its output. This would in turn yield a C/N0 ratio of about 46 dBHz at 76°North, assuming a receiver with overall noise figure of 1.5 dB and clear air conditions. Based on the link budget calculations two different beacon receiver designs are proposed. One based on the superheterodyne receiver architecture realized with standard RF-components such as mixers and amplifiers with coaxial connectors. The second design is based on the universal software radio peripheral, (USRP), which is a software radio, intended to allow personal computers function as radio transceivers. It was found that building a complete beacon receiver from standard RF-components would require about 100.000 NOK to achieve the wanted performance. This includes a complete system with antenna, front-end and baseband receiver. Due to the relatively inexpensive hardware (4900 NOK) of the USRP and the availability of front-end plug inn boards in the required intermediate frequency range the USRP was chosen as the hardware portion of the receiver. Linearity measurments and observations of the USRP output spectrum shows a linear dynamic range of about 60 dB which is found sufficient for beacon measurements. A Ku-band antenna intended for television reception has been used to receive a 12.2 GHz beacon transmitted by Eutelsat W3A Software code was developed based on the GNU radio framework in order to use the USRP as a beacon receiver. A number of issues were discovered during this work: GNU radio does not contain filters for spectral averaging Attempts to implement additional functionality in software proved challenging due to limitations in computational speed Both of the two issues affected the performance of the beacon receiver. Modifications and additions to the GNU radio software is therefore suggested for future work
Sun, Yi-Ran. "Generalized Bandpass Sampling Receivers for Software Defined Radio." Doctoral thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4009.
Full textKarve, Mrudula Prabhakar. "Evaluation of GNU Radio Platform Enhanced for Hardware Accelerated Radio Design." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/36405.
Full textMaster of Science
Nor, Azlan bin Mohd Aris. "Development of Software-Defined Multichannel Receiver for Equatorial Atmosphere Radar (EAR)." Kyoto University, 2020. http://hdl.handle.net/2433/253426.
Full textReed, Rachel E. "Real-Time Implementation and Analysis of Chip Shape-based Software Defined Receiver." University of Dayton / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1493634316594274.
Full textAthari, Emad, and Petter Lerenius. "Design and implementation of an SDR receiver for the VHF band." Thesis, Linköping University, Department of Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8386.
Full textThe purpose of this thesis work is to examine the possibility of building a software-defined radio (SDR) for the VHF-band. The goal is to accomplish this with as few components as possible, thus cutting down the size and the production cost.
An SDR solution means that the sampling of the signal is done as close to the antenna as possible. The wide bandwidth needed in such a product is achieved by using SP Devices algorithm for time-interleaved ADCs. Two hardware prototypes and two versions of the software were designed and implemented using this technology.
They were also analyzed within this thesis work. The results proved to be good, and the possibilities to produce a commercial software-defined radio receiver for the VHF-band are good.
Syftet med det här examensarbetet är att utreda möjligheten att bygga en mjukvarustyrd radiomottagare (SDR) för VHF-bandet. Målet är att göra detta genom att använda så få komponenter som möjligt, och därigenom minska storleken och produktionskostnaden.
En SDR lösning ger att samplingen kommer att ske så nära antennen som möjligt. Den stora bandbredd som behövs för en sådan produkt uppnås genom att använda SP Devices algoritm för att ''tidsinterleava'' höghastighets ADC:er. Två hårdvaruprototyper och två versioner av mjukvaran har designats och implementerats.
Analyserna har visat bra resultat, och möjligheterna att bygga en komersiell mjukvarudefinierade radiomottagare för VHF-bandet ses som goda.
Bagheri, Rahim. "An 800-MHz to 6-GHz CMOS software-defined-radio receiver for mobile terminals." Diss., Restricted to subscribing institutions, 2007. http://proquest.umi.com/pqdweb?did=1320960921&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.
Full textHedlund, Richard. "Design of a UAV-based radio receiver for avalanche beacon detection using software defined radio and signal processing." Thesis, Uppsala universitet, Signaler och System, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-377025.
Full textAlluri, Veerendra Bhargav. "MULTIPLE CHANNEL COHERENT AMPLITUDE MODULATED (AM) TIME DIVISION MULTIPLEXING (TDM) SOFTWARE DEFINED RADIO (SDR) RECEIVER." UKnowledge, 2008. http://uknowledge.uky.edu/gradschool_theses/499.
Full textRastogi, Ashita. "ANALYSIS OF ANOMALOUS GLOBAL POSITIONING SYSTEM RECEIVER DATA." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1171647235.
Full textFujimaki, Akira, Koichi Nakazono, Hiroaki Hasegawa, Takashi Sato, Akira Akahori, Nobuo Takeuchi, Futoshi Furuta, Masaaki Katayama, and Hisao Hayakawa. "Broad Band Software-Defined Radio Receivers Based on Superconductive Devices." IEEE, 2001. http://hdl.handle.net/2237/7077.
Full textBauer, Zachary Obenour. "A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1357402542.
Full textParker, Peter, John Nelson, and Mark Pippitt. "An Open Systems Architecture for Telemetry Receivers." International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581819.
Full textBlais, Antoine. "Feasibility of a Direct Sampling Dual-Frequency SDR Galileo Receiver for Civil Aviation." Phd thesis, Toulouse, INPT, 2014. http://oatao.univ-toulouse.fr/14271/1/Blais.pdf.
Full textGong, Fei. "Front End Circuit Module Designs for A Digitally Controlled Channelized SDR Receiver Architecture." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322606039.
Full textHaghighitalab, Delaram. "Récepteur radio-logicielle hautement numérisé." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066443.
Full textNowadays there is an increase in the number of standards being integrated in mobile devices. The main issues are battery life and the size of the device. The idea of a Software Defined Radio is to push the digitization process as close as possible to the antenna. Having most of the circuit in the digital domain allows it to be reconfigurable thus requiring less area and power consumption. In this thesis, we present the first implementation of a complete SDR receiver based on RF bandpass Sigma-Delta including a Variable-Gain LNA (VGLNA), an RF subsampled Sigma-Delta ADC, an RF digital down-conversion mixer and a polyphase multi-stage multi-rate decimation filter. VGLNA enlarges the dynamic range of the multi-standard receiver to achieve the requirements of the three targeted wireless standards. Also a mixed architecture, using both Source-Coupled Logic (SCL) and CMOS circuits, is proposed to optimize the power consumption of the RF digital circuits. Moreover, we propose a multi-stage comb filter architecture with polyphase decomposition to reduce the power consumption. The receiver is measured for three different standards in the 2.4 GHz ISM-band. Measurement results show that the receiver achieves 79 dB, 73 dB and 63 dB of dynamic range for the Bluetooth, ZigBee and WiFi standards respectively. The complete receiver, implemented in 130 nm CMOS process, has a 300 MHz tunable central frequency and consumes 63 mW under 1.2 V supply. Compared to other SDR receivers, the proposed circuit consumes 30% less power, the DR is 21 dB higher, IIP3 is 6 dB higher and the overall Figure of Merit is 24 dB higher
Haghighitalab, Delaram. "Récepteur radio-logicielle hautement numérisé." Electronic Thesis or Diss., Paris 6, 2015. http://www.theses.fr/2015PA066443.
Full textNowadays there is an increase in the number of standards being integrated in mobile devices. The main issues are battery life and the size of the device. The idea of a Software Defined Radio is to push the digitization process as close as possible to the antenna. Having most of the circuit in the digital domain allows it to be reconfigurable thus requiring less area and power consumption. In this thesis, we present the first implementation of a complete SDR receiver based on RF bandpass Sigma-Delta including a Variable-Gain LNA (VGLNA), an RF subsampled Sigma-Delta ADC, an RF digital down-conversion mixer and a polyphase multi-stage multi-rate decimation filter. VGLNA enlarges the dynamic range of the multi-standard receiver to achieve the requirements of the three targeted wireless standards. Also a mixed architecture, using both Source-Coupled Logic (SCL) and CMOS circuits, is proposed to optimize the power consumption of the RF digital circuits. Moreover, we propose a multi-stage comb filter architecture with polyphase decomposition to reduce the power consumption. The receiver is measured for three different standards in the 2.4 GHz ISM-band. Measurement results show that the receiver achieves 79 dB, 73 dB and 63 dB of dynamic range for the Bluetooth, ZigBee and WiFi standards respectively. The complete receiver, implemented in 130 nm CMOS process, has a 300 MHz tunable central frequency and consumes 63 mW under 1.2 V supply. Compared to other SDR receivers, the proposed circuit consumes 30% less power, the DR is 21 dB higher, IIP3 is 6 dB higher and the overall Figure of Merit is 24 dB higher
Mehrez, Hanen. "Interface Radio SDR pour récepteur GNSS multi constellations pour la continuité de positionnement entre l’intérieur et l’extérieur." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLL008/document.
Full textIn order to improve the availability of services provided by a receiver, designing a GNSS receiver to collect multiple signals from all bands simultaneously seems to be the solution. An optimized software-defined RF (SDR) sub-sampling architecture with an integral and reconfigurable RF stage and a digital processing stage with a software implementation of the baseband processing is defined for this GNSS receiver, while meeting the requirements GNSS standards specifications: cellular radio networks: GPS, Glonass, Galileo, Beidou. Many discrete components are selected after system dimensioning. Thus, experimental validation prototype is installed. Then we are interested in the characterization of the RF front-end in order to determine the limitations caused by the nonlinearity and to study the stability of the proposed prototype. A stage of digital processing of the IF signals, captured at the ADC output, is implemented under Matlab software. The acquisition of these data allows the determination of satellites visible at a given instant that allows us to determine a position
Gunawardena, Sanjeev. "DEVELOPMENT OF A TRANSFORM-DOMAIN INSTRUMENTATION GLOBAL POSITIONING SYSTEM RECEIVER FOR SIGNAL QUALITY AND ANOMALOUS EVENT MONITORING." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1178558967.
Full textMailand, Marko. "Systemanalyse und Entwicklung Six-Port basierter Funkempfängerarchitekturen unter Berücksichtigung analoger Störeffekte." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1199900991755-90088.
Full textMailand, Marko. "Systemanalyse und Entwicklung Six-Port basierter Funkempfängerarchitekturen unter Berücksichtigung analoger Störeffekte." Doctoral thesis, Technische Universität Dresden, 2007. https://tud.qucosa.de/id/qucosa%3A24036.
Full textBrito, Filho Francisco de Assis. "VCO Banda Larga Integrado para Receptor a Cinco Portas." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15300.
Full textConselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
This work presents an wideband ring VCO for cognitive radio five-port based receivers. A three-stage differential topology using transmission gate was adopted in order to maintain wide and linear tuning range and a low phase-noise. Monte-Carlo analysis were performed for phase-shift response of individual stages, which is an important figure of merit in five-port works. It was observed a fairly linear correlation between control voltage and oscillation frequency in the range between 200 MHz and 1800 MHz. The VCO was preliminarily designed for IBM 130nm CMOS technology
Este trabalho apresenta um VCO anel banda-larga para ser utilizado em receptores para R?dio Cognitivo baseados no correlator a cinco portas. Uma arquitetura diferencial de tr?s est?gios com porta de transmiss?o ? utilizada como forma de manter uma sintonia linear em larga faixa de frequ?ncias, bem como, um baixo ru?do de fase. An?lises de Monte-Carlo foram feita para avaliar as varia??es de fase em cada est?gio, o que constitui uma figura de m?rito importante em receptores baseados no correlator de cinco portas. Observou-se correspond?ncia razoavelmente linear entre tens?o de controle e freq??ncia de oscila??o na faixa compreendida entre 200 MHz e 1800 MHz. O VCO foi preliminarmente projetado para tecnologia CMOS IBM de 130 nan?metros
Alhasan, Raghda. "Software defined radio." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-53361.
Full textNash, Christopher, and Christopher Hogstrom. "SOQPSK Software Defined Radio." International Foundation for Telemetering, 2015. http://hdl.handle.net/10150/596411.
Full textThis paper presents the results of laboratory experiments using a commercial-off-the-shelf software defined radio to demodulate SOQPSK-TG for aeronautical telemetry. Using the NI USRP N210 and Zynq™ processor, we achieved 900 kbits/s demodulation and found that the USRP N210 has a signal sensitivity of -71 dBm at a BER of 10⁻⁶.
Antunes, Lúcia Margarida da Mata. "Software defined radio em FPGA." Master's thesis, Universidade de Aveiro, 2009. http://hdl.handle.net/10773/2150.
Full textEsta dissertação teve como objectivo o desenvolvimento de parte de um receptor para Digital Audio Broadcasting (DAB) recorrendo aos conceitos ditados por Software Defined Radio (SDR). O receptor de rádio inclui a conversão de digital para analógico e a subsequente desmodelação de banda- base,pelo que é possível aceder à bit stream em qualquer ponto do sistema. A dissertação foi dividida em duas fases. Na primeira, o receptor completo foi simulado em MATLAB. Na segunda, o mesmo sistema foi implementado e testado numa placa XtremeDSP Development Kit-IV, a qual contêm um Field-Programmable Gate Array (FPGA). O sistema simulado foi testado com dois tipos de amostras. As primeiras consistiram em sinais DAB gerados em MATLAB e posteriormente distorcidos por diferentes canais também simulados pelo mesmo software. Foi assim possível fazer um estudo da probabilidade de erro quando o sinal é exposto a diferentes perturbações, como ruído, desvios na frequência e no tempo. O sistema foi ainda testado com amostras DAB reais. As constelações desmodelados mostraram o correcto funcionamento do sistema. Apenas parte do receptor simulado foi implementado no FPGA. A parte já desenvolvida consiste nas funções de desmodelação: desmodelação OFDM, desmodelação diferencial, frequency deinterleaving e demapeamento QPSK. O sistema de sincronização DAB não foi implementado. O sistema já desenvolvido é assim capaz de desmodelar um sinal DAB gerado no MATLAB, desde que este não contenha qualquer distorção. ABSTRACT: The aim of this dissertation was the development of part of a Digital Audio Broadcasting (DAB) receiver by means of Software Defined Radio (SDR). This radio receiver includes the Intermediate Frequency (IF) to baseband conversion and the subsequent baseband demodulation, thus one may access the bit stream in any point of the system. This dissertation was divided in two phases. In the first one, the whole DAB system was simulated in MATLAB. In the second, the receiver was implemented and tested in an XtremeDSP Development Kit-IV platform, which includes a Field-Programmable Gate Array (FPGA). The simulated system was tested with two kinds of samples. The first ones were generated in MATLAB and subsequently distorted by different channel conditions also simulated in the same software. This well known DAB digital signal allowed us to perform a Bit Error Rate (BER) study with several channel conditions, such as noise, multipath, frequency and time offsets. Further on, real DAB samples were used for testing. The demodulated QPSK constellations showed the correct operation of the system. Only part of the simulated receiver was implemented in the FPGA. This part consists in the channel demodulation functions: OFDM demodulation, differential demodulation, frequency deinterleaving and QPSK demapper. The DAB synchronization block was not implemented. The developed system is able to recover the modulated bit stream from the digital signal produced in MATLAB, since this signal is free of noise, frequency and time offsets
Danielsen, Trond. "Software-Defined GNSS Receiver based on Free Software Components." Thesis, Norwegian University of Science and Technology, Department of Electronics and Telecommunications, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9621.
Full textA acquisition module for the OpenGNSS software receiver has been implemented as GNU Radio module. It has been tested and the functionality has been verified with both simulated and real signal. A number of proposals for future work and modifications to the GNU Radio framework has also been presented.
Smuts, Matthys. "Software modem for a software defined radio system." Thesis, Stellenbosch : University of Stellenbosch, 2007. http://hdl.handle.net/10019.1/1985.
Full textThe use of older and slower protocols has become increasingly difficult to justify due to the rapid pace at which telecommunications are advancing. To keep up to date with the latest technologies, the communications system must be designed to accommodate the transparent insertion of new communications standards in all the stages of a system. The system should, however, also remain compatible with the older standards so as not to demand an upgrade of the older systems. The concept of a software defined radio was introduced to overcome these problems. In a software defined radio system, the functionality of the communications system is defined in software, which removes the the need for alterations to the hardware during technology upgrade. To maintain interoperatibilty, the system must be based on a standardised architecture. This would further allow for enhanced scalability and provide a plug-andplay feature for the components of the system. In this thesis, generic signal processing software components are developed to illustrate the creation of a basic software modem that can be parameterised to comply fully, or partially, to various standards.
Paffetti, Michele. "Software Defined Radio for NB-IoT." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/14315/.
Full textSundquist, Thomas. "Waveform Development using Software Defined Radio." Thesis, Linköping University, Department of Science and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6464.
Full textSoftware Defined Radio (SDR) is a conception of implementing radio functions in computer software, instead of having electronics performing the functions. This thesis aims to compare two different ways of implementing these functions, or waveforms.
The Software Communications Architecture (SCA) is an open standard developed by the United States Department of Defense. It uses a CORBA interface environment to make waveform applications interoperable and platform independent. This method of developing SDR is compared to an open-source initiative going by the name GNU Radio.
Two waveform applications are developed, one transmitter using SCA, and one receiver using GNU Radio. The analog radio interface is simulated using the sound cards of two regular PCs. The development is done using the C++ and Python programming languages.
This thesis examines pros and cons of the two SDR methods, as well as performing studies of Software Defined Radio in general.
Dumont, Nathan. "Software defined radio for cognitive networks." Thesis, University of Bath, 2014. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619232.
Full textDuarte, Miguel Filipe Batista. "Spectrum sensing through software defined radio." Master's thesis, Faculdade de Ciências e Tecnologia, 2014. http://hdl.handle.net/10362/12293.
Full textA change in paradigm when it comes to controlling radio transmissions is in course. Tasks usually executed in an exclusive class of hardware systems are increasingly controlled by software systems. A deep change to the software domain is foreseeable, creating a true Software Defined Radio. At the same time this change occurs, the radioelectric spectrum is almost completely licensed. However, the spectrum is rarely used to its full extent over time, enabling its opportunistic use while the licensed devices do not communicate. This is a part of the notion of Cognitive Radio, a new kind of radio capable of using the spectrum in an opportunistic way. These two new paradigms in radio access can be combined to produce a exible and reliable radio, overcoming the issues with radioelectric spectrum scarcity. This dissertation starts an exploration in this area by combining these two paradigms through the use of an Energy Detector implemented in a Universal Software Radio Peripheral device and using the GNURadio suite. The performance of such a system is tested by calculating the Probabilities of Detection and False Alarm in real scenarios and comparing them to the expected theoretical values. A method for defining thresholds for narrowband signals is also tested based on works in Information Theory concepts, i.e.,the Akaike Information Criteria and the Minimum Description Length. The results are tested for a real transmission using two USRP platforms communicating with each other,one acting as the licensed user and the other acting as the secondary, opportunistic user. Finally, we highlight the technological work developed in this dissertation, which may support future research works through the use of the developed scripts, allowing a faster method to test algorithms with different parameterization.
Tsoeunyane, Lekhobola Joachim. "RHINO software-defined radio processing blocks." Master's thesis, University of Cape Town, 2015. http://hdl.handle.net/11427/20102.
Full textKohls, Nicholas Everett. "Software Defined Radio Short Range Radar." BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/9027.
Full textMartins, Francisco Arrabaça. "Waveform generator for Software Defined Radio." Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/11040.
Full textEsta dissertação insere-se na área de eletrónica de radio frequência, mais concretamente na geração de sinal para caracterizar sistemas com a arquitetura Software Denned Radio (SDR). Esta arquitetura tem como conceito a definição de um rádio completamente ajustável por software, através de conversão de blocos de domínio análgico para digital. Atendendo a importância que as novas tecnologias têm nos dias de hoje, os sistemas SDR aparecem como uma solução, uma vez que tendem a diminuir a parte de hardware, aproximando a conversão para o domínio digital cada vez mais próxima da antena. Neste trabalho propõem-se duas implementações, um gerador CW (Continuous Wave) que tem como funções estimular um dispositivo sobre teste e ainda de actuar como oscilador local. A outra implementação assemelhando-se com a arquitetura de um gerador AWG (Arbitrary Waveform Generator) que terá como função originar dois tons para estimular um dispositivo sobre teste. A gama de frequências encontra-se entre os 40 e 1000 MHz.
This dissertation is inserted into the area of radio frequency electronics, specially in signal generation to characterize systems with Software Defined Radio (SDR) architecture. This architecture has like a concept defining a radio completely adjustable by software, by converting blocks of the analog domain to the digital domain. This architecture has like a concept defining a radio completely adjustable by software, by converting blocks of the analog domain to the digital domain. Considering the importance that new technologies have nowadays, SDR systems appear as a solution since they tend to reduce the hardware part by approximating the conversion to the digital domain closer and closer to the antenna. In this work, two implementations are proposed, one is a CW (Continuous Wave) generator which has the function to stimulate a device under test and also to act as a local oscillator. In the other implementation, that has a similar architecture of an AWG (Arbitrary Waveform Generator) generator has as function generating two tones to stimulate a device under test.
Becker, Brandon, and Charles Bennett. "Software Defined Radio MIMO Telemetry Transmitter." International Foundation for Telemetering, 2016. http://hdl.handle.net/10150/624241.
Full textPratt, Jason Michael. "A software defined radio for research into cognitive radio." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Pratt2_09007dcc8049b35e.pdf.
Full textVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed December 7, 2007) Includes bibliographical references (p. 171-173).
Cronje, Johannes Jacobus. "Software architecture design of a software defined radio system." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50095.
Full textENGLISH ABSTRACT: The high pace of technological advancement enables the realisation of ever more advanced mobile communications standards with more functionality than simple voice communications. The hardware that is used to implement the radio sections of these systems generally require long design cycles, much longer than the design cycles of the other components of a communications system. Another problem is that, once new communications standards are introduced, the current hardware platforms used in the terminal equipment becomes obsolete because they can generally not be used with the new standards. This has serious cost implications for both the service provider and the consumer, because both parties have to acquire new equipment to be able to use the new standards. An elegant solution to the above issues is to use software-defined radio sections to replace the hardware radio components. New communications standards can then be supported by simply loading new software onto the equipment, provided the maximum processing capacity of the processor(s) that the software runs on can accommodate the bandwidth requirements of that specific standard. This thesis investigates the ideas behind software defined radio and also describes the design and implementation of a software architecture that can be used to implement software defined radios on general-purpose platforms such as personal computers.
AFRIKAANSE OPSOMMING: Die hoë tempo van tegnologiese vordering maak dit moontlik om baie gevorderde mobiele kommunikasie standaarde te implementeer wat meer funksionaliteit bied as blote spraakkommunikasie. Die hardeware wat gebruik word om die radios van sulke stelsels te implementeer neem gewoonlik langer om te ontwikkel as die ander komponente van die stelsels. Die ander probleem is dat hierdie hardeware gewoonlik nie hergebruik kan word wanneer nuwe kommunikasie standaarde in gebruik geneem word nie omdat die standaarde nie versoenbaar is nie. Dit het tot gevolg dat beide die verbruiker en die diensverskaffer groot bedrae geld moet spandeer om die nuwe tegnologie te kan gebruik. 'n Elegante oplossing vir hierdie probleme is om gebruik te maak van radios waarvan die funksionaliteit in sagteware gedefiniëer word. Nuwe kommunikasie standaarde kan dan gebruik word deur slegs die nodige sagteware op die toerusting te laai, solank die verwerkingskapasiteit van die mikroverwerkers in die stelsel die benodigde bandwydte kan akkommodeer. Hierdie tesis ondersoek die konsepte van sagteware-gedefiniëerde radio en beskryf die ontwerp en implementering van 'n sagteware argitektuur vir die implementering van sagteware-gedefiniëerde radios op veeldoelige platforms soos persoonlike rekenaars.
Rhiemeier, Arnd-Ragnar [Verfasser]. "Modulares Software-defined Radio / Arnd-Ragnar Rhiemeier." Karlsruhe : Inst. für Nachrichtentechnik, 2005. http://d-nb.info/1001464257/34.
Full textPatton, Lee K. "A GNU Radio Based Software-Defined Radar." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1176142845.
Full textCruz, Pedro Miguel Duarte. "Characterization of systems for software defined radio." Master's thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/1938.
Full textEsta dissertação insere-se na área de electrónica de rádio frequência, mais precisamente na caracterização de sistemas para rádios definidos por software (SDR). Um SDR é aquele que possui a flexibilidade para sintonizar, filtrar, ajustar a taxa de transmissão e controlar o tipo de modulação através de software. O aparecimento de novas tecnologias no mercado obriga à utilização de uma quantidade considerável de hardware nos dispositivos de transmissão/recepção, assim uma solução consiste no uso de arquitecturas de SDR onde a conversão do sinal analógico para digital é executada o mais próximo possível da antena e, sendo depois todo o processamento efectuado digitalmente. Assim, nesta tese, é apresentado um modelo comportamental para receptores de SDR, que leva em conta os elementos chave da distorção não linear. Além disso, são apresentadas algumas comparações entre simulações e medidas usando sinais multi-seno e WiMax usando um receptor ideal de SDR. Finalmente, é proposto um novo sistema de caracterização para dispositivos de SDR. ABSTRACT: This dissertation is related to the radio frequency area, more specifically to the characterization of systems for software-defined radio. A software-defined radio is one that has the flexibility to tune, filter, set the transmission rate and control the modulation type only by software. The emergence of new technologies in the market forces the use of a considerable quantity of hardware in the transceivers systems, so a viable solution for this is to use SDR solutions where the analogue to digital conversion is made closest possible of the antenna and then make all the processing digitally. So, in this dissertation, a behavioral model for SDR front end receiver evaluation, that captures the key elements of the nonlinear distortion, is proposed. Moreover, some comparisons between measured and simulated results under multisine and WiMax excitations are presented using the ideal SDR receiver. Finally, a new instrumentation system for characterization of SDR front ends is proposed.