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 42 for “"GNU Radio"”.
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Cooperative relaying using USRP and GNU radio
… signal quality. We implement this strategy using GNU Radio and three Radios (USRP-Universal Software Radio peripheral) which act as a Transmitter, a Receiver and a Relay. Our main goal is to verify the communication in between the two Radios (a Direct Link) and implement Cooperative communication …
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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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A variable threshold for an energy detector using GNU radio
… efficiently utilized and appropriated. Cognitive radio communications serve to improve use of dwindling spectrum availability. Spectrum sensing is the first and critical technology in cognitive radio meant to determine radio parameters. Energy Detection (ED) is a spectrum sensing technology that …
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Making Radios with GReasy: GNU Radio With FPGAs Made Easy
Radio technology is rapidly evolving and as processing capabilities and algorithms become more complex, the need for alternative compilation and user interface abstraction increases. Field Programmable Gate Array (FPGA) technology introduces unique reconfigurable hardware architectures that can aid …
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Enhancing GNU Radio for Run-Time Assembly of FPGA-Based Accelerators
Software defined radios (SDRs) have changed the paradigm of slowly designing custom radios, instead allowing designers to quickly iterate designs with a large range of functionality. With the help of environments like the open-source project, GNU Radio, a designer can prototype radios with greatly …
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Evaluation of GNU Radio Platform Enhanced for Hardware Accelerated Radio Design
The advent of software radio technology has enabled radio developers to design and implement radios with great ease and flexibility. Software radios are effective in experimentation and development of radio designs. However, they have limitations when it comes to high-speed, high-throughput …
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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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Hybrid FPGA and GPP Implementation of IEEE 802.15.4 Physical Layer
… Access Control) layer tasks are performed in GNU Radio on the host. The second case is an implementation of a multi-channel IEEE 802.15.4 receiver. A four-channel channelizer is implemented on the external Virtex 5 FPGA, while the IEEE 802.15.4 receiver is implemented in GNU Radio on the host. …
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Implementation of a Software Defined Spread Spectrum Communication System
… network. We introduce the concept of a software radio, the current state of art, and GNU Radio and its concepts. We discuss in detail the design and development methods of GNU Radio and develop a flowgraph in Python to demonstrate the method of development. We present a mathematical analysis of …
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Development and testing of the RHINO host streamed data acquisition framework
… Hardware INterface for computing and radiO (RHINO) with a Personal Computer (PC) host in order to facilitate the development of Software Defined Radio (SDR) applications built using a hybrid RHINO/multicore PC system. The supporting framework that is the focus of this dissertation is …
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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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A Zynq-based Cluster Cognitive Radio
Traditional hardware radios provide very rigid solutions to radio problems. Intelligent software defined radios, also known as cognitive radios, provide flexibility and agility compared to hardware radio systems. Cognitive radios are well suited for radio applications in a changing radio frequency …
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Heterogeneous Processing in Software Defined Radio: Flexible Implementation and Optimal Resource Mapping
The advantages provided by Software Defined Radios (SDRs) have made them useful tools for communication engineers and academics alike. The ability to support a wide range of communication waveforms with varying modulation, encoding, or frequencies on a single hardware platform can decrease …
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Performance Benchmarking Software-Defined Radio Frameworks: GNURadio and CRTSv.2
In this thesis, we benchmark the Cognitive Radios Test System version 2.0 (CRTSv.2) to analyze its software performance with respect to its internal structure and design choices. With the help of system monitoring and profiling tools, CRTSv.2 is tested to quantitatively evaluate its features and …
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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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Estudio y Aplicación del Procesado Digital de la Señal a las Radiocomunicaciones Digitales.
… comerciales. 1.2. Introducción a los Modos de Radiocomunicaciones Digitales. 1.2.1. Introducción. 1.2.2. Radioteletipo (RTTY). 1.2.2.1. BAUDOT (o Murray). 1.2.2.2. ASCII. 1.2.2.3. SITOR. 1.2.2.4. FAX. 1.2.2.5. SSTV (Slow Scan TV-Televisión de barrido lento). 1.2.2.6. ARQ (Automatic Repeat …
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Analyzing Bit Error Rate using Universal Software Radio Peripheral (USRP) Software Defined Radio in Indoor and Outdoor Environments
… environments with the help of Software Defined Radio’s (SDR). Software Defined Radio technology provides cost effective approach and flexibility whereas the hardware approach of traditional systems has significant limitations. We used SDR that implements radio functionalities in software. The …
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Design of software radio
Software Define Radio (SDR) has become a prevalent technology in wireless systems. In SDR some or all of the signal specific handling is implemented in software functions, while other functions like decimation, interpolation, digital up-conversion and digital down conversion are done on …
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Performance Characterization of USRPs
Software Defined Radios (SDRs) are systems in which components such as filters, modulators, demodulators, etc., typically implemented in hardware are instead implemented in software. Thus, SDR systems shift signal processing from analog to digital domain. The signal processing is performed in …
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Wideband RF Front End Daughterboard Based on the Motorola RFIC
The goal of software-defined radio (SDR) is to move the processing of radio signals from the analog domain to the digital domain — to use digital microchips instead of analog circuit components. Until faster, higher-precision analog-to-digital (ADCs) and digital-to-analog converters (DACs) become …
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