Submitted by Marta Toyoda (1144061@mackenzie.br) on 2018-02-07T23:34:13Z No. of bitstreams: 2 VICTOR MORALES DIONISIO.pdf: 15019971 bytes, checksum: cc45d6dd4e5209047a4c19cbfbe5eb00 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Paola Damato (repositorio@mackenzie.br) on 2018-02-22T13:35:18Z (GMT) No. of bitstreams: 2 VICTOR MORALES DIONISIO.pdf: 15019971 bytes, checksum: cc45d6dd4e5209047a4c19cbfbe5eb00 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2018-02-22T13:35:18Z (GMT). No. of bitstreams: 2 VICTOR MORALES DIONISIO.pdf: 15019971 bytes, checksum: cc45d6dd4e5209047a4c19cbfbe5eb00 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-08-07 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / Fundo Mackenzie de Pesquisa / This paper presents the characteristics of two recent technologies on the scienti c and telecommunications community: the Advanced Television Systems Committee (ATSC) 3.0; the Software De ned Radio (SDR). Later, the usage of the three is studied by developing the modulator of the ATSC 3.0 system with SDR technique and the GNURadio Companion (GRC). In order to prove the integrity of the modulator implementation, the transmitted signal is tested with the Dektec receiver, composed by the DTA-2131 hardware and the Atsc3Xpress software. All the codes are developed in C++ language and the tests made in GRC. Such tests prove the integrity of the implementation since the receiver was able to demodulate the signal correctly, and that the SDR platform is a suitable tool for prototyping and researching digital TV transmission systems. / Este projeto apresenta as definições e características de duas tecnologias recentes na comunidade científica e de telecomunicações: o Advanced Television Systems Committee (ATSC) 3.0; o Rádio Definido por Software, do inglês Software Defined Radio (SDR). Posteriormente, investiga a combinação delas, desenvolvendo um modulador do sistema ATSC 3.0 por meio da técnica de SDR, utilizando o software GNURadio Companion (GRC). Com o intuito de comprovar a integridade da implementação do modulador, o sinal _e testado com o receptor, composto pelo hardware DTA-2131 e software Atsc3Xpress da Dektec. O desenvolvimento do sistema _e feito por meio de algoritmos computacionais em linguagem C++ e os testes são feitos no GRC. Tais testes comprovam a integridade da implementação uma vez que o receptor foi capaz de demodular o sinal corretamente, e que a plataforma de SDR _e uma ferramenta adequada para prototipagem e pesquisa de sistemas de transmissão de TV digital.

The promise of Internet of Things (IoT) and mass connectivity has brought many applications and along with them many new challenges to be solved. Recognizing sensor networks as one of the main applications of IoT, this dissertation focuses on solutions for IoT challenges in both single-hop and multi-hop communications. In single-hop communications, the new IEEE 802.11ah and its Group Synchronized Distribution Coordination Function (GS-DCF) is studied. GS-DCF categorized nodes in multiple groups to solve the channel contention issue of dense networks. An RSS-Based grouping strategy is proposed for the hidden terminal problem that can arise in infrastructure-based single hop communications. For multi-hop communications, Physical Layer Network Coding (PNC) is studied as a robust solution for multi-hop packet exchange in linear networks. Focusing on practical and implementation issues of PNC systems, different challenges have been addressed and a Software Defined Radio (SDR) PNC system based on USRP devices is proposed and implemented. Finally, extensive simulation and experimental results are presented to evaluate the performance of the proposed algorithms in comparison with currently used methods. / Graduate

This master thesis is focused on analysis and creation of GSM network, using open-source projects. For such creation is used software defined radio – in this thesis kit USRP1 which uses OpenBTS with GNURadio. As a switchboard is used PBX Asterisk and for testing GSM network was used OsmocomBB (on Motorola C123) and Airprobe (on Nokia 3310) projects. Installation and implementation are part of this thesis. In thesis have been also created two scripts for simplify of the work with projects and one laboratory task.

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 designs. This limitation can be overcome by introducing a hardware element to the software radio platform. Enhancing GNU Radio for Hardware Accelerated Radio Design project implements such a scheme by augmenting an FPGA co-processor to a conventional GNU Radio flow. In this thesis, this novel platform is evaluated in terms of performance of a radio design, as well as hardware and software system requirements. A simple and efficient Zigbee receiver design is presented. Implementation of this receiver is used as a proof-of-concept for the effectiveness and design methodology of the modified GNU Radio. This work also proposes a scheme to extend this idea for design of ultra-wideband radio systems based on multiband-OFDM. / Master of Science

This thesis describing basic concepts and parts of OFDM modulator, showing their implementation in Matlab. It’s focused on how to use USRP with Matlab to create fully functional OFDM modulator.

This thesis describing basic concepts and parts of OFDM modulator, showing their implementation in Matlaba. It's also focusing on how to use USRP with Matlab and creating functional OFDM modulator. Main efford is forwarded to practical impelementation of OFDM using available hardware.

No description available.