This master thesis is as a final project in the Division of Computer Engineering at the Department of Electrical of Engineering, Linköping University, Sweden. The purpose of the project is to set up a baseband behavioral model for a Bluetooth system based on standards. In the model, synchronization in demodulation part has been focused on. Simulation results are analyzed later in the report to see how the method in demodulation works. Some suggestions and future works for receiver are provided to improve the performances of the model.

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The Motorola Inc. paging protocol FLEX is discussed. The design and construction of a FLEX paging protocol decoder is discussed in detail. It proposes a decoding solution that includes a radio frequency (RF) receiver and a decoder board. The RF receiver will be briefly discussed. The decoder design is the main focus of this thesis as it transforms the RF frequency modulated (FM) data from the receiver and converts it to FLEX data words. The decoder is designed to handle bit sampling, bit clock synchronization, FLEX packet detection, and FLEX data word collection. The FLEX data words are then sent by the decoder to an external computer through a serial link for bit processing and storage. A FLEX transmitter will send randomly generated data so that a bit error rate (BER) calculation can be made at a PC. Each receiver'9s noise power and noise bandwidth will be measured so that noise spectral density may be calculated. A complete measurement set-up will be shown on how these noise measurements are made. The BER at a known power level is recorded. This enables Eb/No curves to be generated so that results of the decoding algorithm may be compared. This is performed on two different receivers. / Master of Science

Submitted by Fernanda Ciolfi (fernanda.ciolfi@puc-campinas.edu.br) on 2016-08-11T19:28:00Z No. of bitstreams: 1 Vitor Queiroz Pereira.pdf: 3873709 bytes, checksum: 35cd48e3c95401712d40707f6b9e1af3 (MD5) / Made available in DSpace on 2016-08-11T19:28:00Z (GMT). No. of bitstreams: 1 Vitor Queiroz Pereira.pdf: 3873709 bytes, checksum: 35cd48e3c95401712d40707f6b9e1af3 (MD5) Previous issue date: 2016-06-23 / The characteristics of the Sensors Wireless Networks (WSNs) make this technology a solution for a variety of purposes, including when it comes to Internet of Things (IoT). Formed by sensor nodes, this type of network is responsible for monitoring and acting on various aspects of the environment to measure temperature or trigger an exhaust fan. However, wireless communication is vulnerable environment changes in which it operates, which could compromise the effectiveness of communication. Thus, this work presents a proposal for a methodology to determine optimal routes based on an estimate of the PER by the RSSI and a protocol for the collection of network RSSIs. The estimated PER was developed by experimental tests with FSK modulation. The collection protocol was implemented in a real network and RSSIs used to determine the best routes. The methodology for allocation of routes was developed with the classification premise of us according to the criticality of your application into two groups, high and low criticality. / As caracter?sticas das Redes de Sensores Sem Fio (RSSF) fazem desta tecnologia uma solu??o para diversas finalidades, inclusive quando se trata de Internet das Coisas (IoT). Formada por n?s sensores, este tipo de rede ? respons?vel por monitorar e atuar em diferentes aspectos do ambiente, como medir a temperatura ou acionar um exaustor. Entretanto, a comunica??o sem fio ? vulner?vel as mudan?as do ambiente em que est? inserida, podendo comprometer a efic?cia da comunica??o. Neste sentido, este trabalho apresenta uma proposta uma de metodologia para determina??o de melhores rotas baseada em uma estimativa da PER pela RSSI e um protocolo para a coleta das RSSIs da rede. A estimativa da PER foi desenvolvida por meio de testes experimentais com a modula??o FSK. O protocolo de coleta foi implementado em uma rede real e as RSSIs utilizadas na determina??o de melhores rotas. A metodologia para atribui??o de rotas foi desenvolvida baseada na classifica??o dos n?s em fun??o de sua criticidade.

ecorative lighting strips could be used to the backlight of furniture, to creating a modern interior design. From an architectural point of view, this design is very difficult and requires a strong sense of aesthetics. More easier is to use the LED strips to the advertising trailers or to backlighting car parts. RGB strip will be powered by switching power supply with galvanic isolation. Colour will be changed by the combination of basic colours RGB, by using 3-channel PWM of Atmel microcontroller, controlled via a wireless module, providing two-way communication..

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-11-01T21:51:37Z No. of bitstreams: 1 AlexandreBarbosaBruno_DISSERT.pdf: 10742068 bytes, checksum: 8856afbc18039f28f1ae0f2c51179126 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-11-08T21:56:39Z (GMT) No. of bitstreams: 1 AlexandreBarbosaBruno_DISSERT.pdf: 10742068 bytes, checksum: 8856afbc18039f28f1ae0f2c51179126 (MD5) / Made available in DSpace on 2017-11-08T21:56:39Z (GMT). No. of bitstreams: 1 AlexandreBarbosaBruno_DISSERT.pdf: 10742068 bytes, checksum: 8856afbc18039f28f1ae0f2c51179126 (MD5) Previous issue date: 2017-08-07 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq) / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / A radia??o t?rmica ? um mecanismo de transfer?ncia de calor muito importante em processos que envolvem gases participantes, como CO2 e H2O, em temperaturas elevadas. Contudo, a solu??o exata linha-por-linha da transfer?ncia de calor por radia??o em gases participantes ? computacionalmente dispendiosa. Uma das formas de abordagem para esse tipo de problema consiste na utiliza??o dos m?todos de distribui??o-k, como o FSK e SLW, os quais s?o exatos quando aplicados a meios uniformes, mas possuem limita??es no tratamento de meios n?o-uniformes. A aplica??o do m?todo FSK a meios n?o-uniformes requer a ado??o da hip?tese de k-correlacionado (resultando no m?todo FSCK, Full spectrum correlated-k). Isso resulta em um erro devido ao fato dos coeficientes de absor??o de meios reais n?o serem verdadeiramente correlacionados. Diante disto, este trabalho prop?e e investiga uma nova abordagem para considerar meios n?o-uniformes utilizando o m?todo FSK e que n?o requer a hip?tese de k-correlacionado. O m?todo FSK aplicado em conjunto com a abordagem proposta foi denominado FSAK, (Full spectrum averagedk). Com o objetivo de demonstrar a aplica??o do novo m?todo e analisa-lo, o mesmo foi utilizado na solu??o de uma s?rie de casos teste envolvendo gases compostos por CO2 e esp?cies n?o participantes. Os resultados obtidos com o m?todo FSAK foram mais precisos na presen?a de gradientes de temperatura e concentra??o das esp?cies qu?micas mais elevados, condi??es em que o FSCK torna-se menos preciso. Tamb?m verificou-se que o uso de diferentes procedimentos para o c?lculo do coeficiente de absor??o do m?todo FSAK resultam em significativas diferen?as entre os resultados, demonstrando que diferentes procedimentos para o c?lculo desses coeficientes podem levar a diferentes n?veis de precis?o, indicando que procedimentos para o c?lculo da m?dia que tornem o m?todo mais preciso poder?o ser encontrados em futuros trabalhos de pesquisa. / Thermal radiation is a very important mechanism of heat trasnfer in processes that contains participating gases, as CO2 and H2O, at high temperature. However, exact lineby- line solution of radiation heat transfer in participating media is highly computer time consuming due to the dependence of the radiative properties with the wavenumber. A manner to approach such a problem is employing k-distribution methods, as FSK and SLW, which are exact when applied to uniform media, but have limitations in the treatment of non-uniform media. The application of the FSK method to non-uniform media requires the k-correlated assumption (resulting in the FSCK method). This leads to error due the fact that the absorption coefficients of real media are not truly correlated. Therefore, this work proposes and investigates a new approach to solve non-uniform media using the FSK method and which does not require the k-correlated assumption. The FSK method applied with this new approach was labeled FSAK (Full spectrum averaged-k distribution). The method was used to solve a series of problems involving gases composed of CO2 and non-participating species. The results obtained with the FSAK method were more accurate when temperature and species mole fraction gradients where high. It has also been verified that different procedures can be used to average the absorption coefficient, and that the procedure highly influences the accuracy of the results, indicating that averaging procedures to increase the method accuracy could be found in further research works.