In this thesis, the physical layer of the Single Channel Ground and Airborne Radio System (SINCGARS) was analyzed in order to gain insight into the bit-error-rate (BER) performance in various channel conditions. The BER performance of the radio was examined using theoretical, simulation, and experimental techniques. These results are presented in graphical form as the probability of bit error as a function of the energy per bit to noise power spectral density ratio. The results of the simulation show excellent agreement with the theory, while the experimental results deviate from theory at higher signal-to-noise levels. This suggests sub-optimal SINCGARS performance, most notably in the signal power to noise power range where reliable data transmission should take place.

The basis of the thesis are based on the installation linked with real time manipulated audio, video and lights. Interactions between different parts of the installation is given by handling all its components. The aim is to comprehensively cover a darkened room space by creating a specific environment.

El presente informe tiene como finalidad, mostrar la implementación de un control maestro de televisión, para llevar a cabo la transmisión y narración en “VIVO” de un partido de fútbol a diferentes países, con estándares de calidad y técnicos exigidos por la Federación Internacional de Fútbol Asociado (FIFA) a nivel mundial. A través del desarrollo de este informe podremos ver marcas, modelos, especificaciones técnicas, estándares, formatos de los diferentes equipos de video, audio, gráficos y demás.

"Criticism of education methods may be traced back as far as the thirteenth century but the purpose of this paper is not to do likewise. Rather, it is intended to suggest to the modern elementary classroom teacher those visual aids which will make 'living in the classroom' a possibility"--Introduction. / Typescript. / "June, 1947." / "Submitted to the Graduate Council of Florida State University in partial fulfillment of the requirements for the degree of Master of Arts under Plan II." / Advisor: R. L. Eyman, Professor Directing Paper. / Includes bibliographical references (leaves 52-54).

Digitized by Kansas Correctional Industries

Digitized by Kansas Correctional Industries

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<p>In wireless transmissions the communication is often degraded by random fades, noise and other performance reducing phenomena. One way of improving the stability and reducing the error rates is to use relaying techniques where several nodes cooperate in a transmission between two of them. This thesis analyzes some of the available Decode-and-Forward relaying schemes for wireless transmission. The investigated schemes are conventional repetition coding, partial repetition coding and non-collaborative direct transmission. I have developed a three-node communication system using an audio channel to test the performance of repetition coding and direct transmission. This audio communication system can also be used to demonstrate some basic phenomena in wireless transmissions and how different scenarios change the performance of the communication. A theoretical performance analysis and computer simulations of the schemes performance over a Rayleigh fading channel are done as a basis for comparison. As a result we see that in the audio communication system repetition coding actually degrades the performance, compared to direct transmission, when using a relatively slow data rate in comparison to the speed of the fading in the audio channel.</p>

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Thesis (M.R.E.)--Conservative Baptist Theological Seminary, 1969. / Includes bibliographical references (leaves [38]-45).