Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 64 for “"Software Defined Radio (SDR)"”.
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Exploring the Vulnerabilities of Traffic Collision Avoidance Systems (TCAS) Through Software Defined Radio (SDR) Exploitation
… infeasible for an attacker to craft arbitrary radio signals, attackers today have access to open-source digital signal processing software like GNU Radio and inexpensive Software Define Radios (SDR). Therefore, this thesis presents motivation through analytical and experimental means for more …
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Digitized Radio broadcast seeker (DRBS)
The use of Software Defined Radio (SDR) has greatly increased the flexibility and programmability of radio systems due to the implementation of radio functions in software. The transfer of traditionally hardware-based signal processing to the software domain enables web SDR receivers to be hosted …
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Creation of a Cognitive Radar with Machine Learning: Simulation and Implementation
… also address the application of the MDP into a software defined radio (SDR) USRP X310 by utilizing the software LabVIEW to communicate with and control the SDR.
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A field programmable gate array based software defined radio design for the space environment
This thesis focuses on a Software Defined Radio (SDR) designed to compress a wideband radio signal input for a narrowband signal output. The design is based on a Field Programmable Gate Array (FPGA), which is chosen for its reprogrammability, flexibility, and our ability to introduce fault …
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An evaluation of low cost fpga-based software defined radios for education and research
… purpose of this study is to evaluate a low-cost Software Defined Radio (SDR) platform for educational and research purposes. An evaluation of existing SDR platforms and design techniques was performed, identifying low cost hardware and software suitable for a laboratory environment. The idea …
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Design, Deployment and Performance of an Open Source Spectrum Access System
… System (SAS) and propose to build an open-source Software Defined Radio (SDR) based framework. This framework will test different dynamic spectrum scenarios in a wireless testbed. This thesis presents our Spectrum Access System prototype, discusses the design choices and trade-offs and provides a …
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A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration
… reception pattern antenna (CRPA) using a Software Defined Radio (SDR) configuration. The combination CRPA and SDR system consists of a low-cost 7-element configuration where the antenna RF inputs are feed directly into the multi-channel SDR system. This combination CRPA and SDR system was …
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Demonstration and evaluation of co-channel DBPSK source separation
… separation system implemented with the GNU Software Defined Radio (SDR) platform and interfaced with the existing MIT community Radio Frequency Identification (RFID) system. Source separation, well studied in the theoretical signal processing setting, presents an opportunity to achieve …
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Configurable SDR Operation for Cognitive Radio Applications using GNU Radio and the Universal Software Radio Peripheral
… responders throughout the country, Cognitive Radio (CR) offers a unique solution to streamline communication between police, Emergency Medical Technicians (EMT), and military officers. Using Software Defined Radio (SDR) technology, a flexible radio platform can be potentially configured using …
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Software defined radio : a system engineering view of platform architecture and market diffusion
… context, this thesis investigates the use of software define radio technology (SDR) as a potential replacement for hardware solutions to the multiple air interface standard problem. This thesis investigates the role of product platform architectures in product market diffusion by studying the …
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Co-channel digital signal separation : application and practice
… techniques. We set up a test-bed with the GNU Software Defined Radio (SDR) platform where we implement and experiment with single-antenna signal separation algorithms. We mainly investigate linearly-modulated digital signals. To do this, we design a multiple RFID card reader capable of decoding …
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IEEE 802.15.4 Implementation on an Embedded Device
Software Defined Radio (SDR) is a growing technology that allows radio communication to become interoperable. SDR can lower the cost for a particular hardware radio to communicate with another radio that uses a different standard. In order to show the capability of SDR, this thesis shows how to …
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Rapid Prototyping of Software Defined Radios using Model Based Design for FPGAs
… the rapid migration of physical layer design of radio towards software, it becomes necessary to select or develop the platform and tools that help in achieving rapid design and development along with flexibility and reconfigurability. The availability of field programmable gate arrays (FPGAs) has …
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Enhancing GNU Radio for Hardware Accelerated Radio Design
… technology evolves and new methods for designing radios arise, it becomes necessary to continue the search for fast and flexible development environments. Some of these new technologies include software defined radio (SDR), Field Programmable Gate Arrays (FPGAs), and the open source project GNU …
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Ex Ante Approaches for Security, Privacy, and Enforcement in Spectrum Sharing
Cognitive radios (CRs) are devices that are capable of sensing the spectrum and using its free portions in an opportunistic manner. The free spectrum portions are referred to as white spaces or spectrum holes. It is widely believed that CRs are one of the key enabling technologies for realizing a …
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Enabling and directing real-time cognitive radar transmitter optimization.
… the performance of transmit amplifiers using a software-defined radio (SDR) and a load-pull extrapolation method using deep learning image completion techniques. Additionally, the accelerated optimization technique has been adapted for use with the pulse-to-pulse waveform agility paradigm of …
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A high speed data acquisition system
… versatile data capture systems is that of software defined radio (SDR). It is a collection of hardware and software technologies that enable reconfigurable system architectures for wireless networks and user terminals. This document gives details on a project to build a high speed, high …
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Design of Software Defined Radio for SuperDARN Radar
Software defined radio (SDR) is a rapidly developing field enabled by continuing improvements in digital electronics. Software defined radio has been used extensively in communication systems due to its flexibility and cost effectiveness. Recently, SDR has been incorporated into radar systems, …
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A broadband Microwave Transceiver Front-end for an Airborne Software Defined Radio Experiment
… transceiver front-end for use in an airborne software defined radio (SDR) experiment. The transceiver must operate in the GSM-1800 and IEEE 802.11b/g WiFi frequency bands and accommodate beamforming. It consists of a transmitter and dual band receiver. The receiver input is fed by a helical …
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A Cost-Efficient Digital ESN Architecture on FPGA
… error rate (BER) compares to its corresponding software ESN implementation. The performance difference between the hardware and software approach is less than 6.5%. The testbed system is built on a software-defined radio (SDR) platform, showing that our work is capable of processing the …
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