Optimisation d'une liaison faisceaux hertziens numériques (French Edition)

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9783640707539: Optimisation d'une liaison faisceaux hertziens numériques (French Edition)

Mémoire (de fin d'études) de l'année 2006 dans le domaine Ingénierie - Technique de Télécommunication / Technique de Communication, note: 1,3, Hochschule Mannheim (Softwaretechnik und Datenkommunikation), langue: Français, résumé: This report contains the development of a DVB-T link, using OFDM modulation in order to increase the resistance against fading. It starts with an extract of the recommendations of the International Telecommunication Union (ITU) about microwave links. In particular, we developed a detailed radio link budget taking into account the effects of fading. A channel model was created modelling an overland path. The report shows in detail the practical development in laboratory consisting in assembling the link model using the OFDM modulation. This work includes a test of the model with the channel model found. Furthermore, a diversity technique increases even more the efficiency, by transmitting the signal through two different frequency channels: the receiver chooses the less affected channel by switching between them. An MPEG transport stream switcher does this. Its development is also explained in the report. Finally, the installation of an experimental link in a fading polluted region and the analysis of the first results are being showed.

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Description du livre Grin Verlag. Paperback. État : New. Paperback. 124 pages. Dimensions: 8.2in. x 5.8in. x 0.3in.Mmoire (de fin dtudes) de lanne 2006 dans le domaine Ingnierie - Technique de Tlcommunication Technique de Communication, note: 1, 3, Hochschule Mannheim (Softwaretechnik und Datenkommunikation), langue: Franais, rsum: This report contains the development of a DVB-T link, using OFDM modulation in order to increase the resistance against fading. It starts with an extract of the recommendations of the International Telecommunication Union (ITU) about microwave links. In particular, we developed a detailed radio link budget taking into account the effects of fading. A channel model was created modelling an overland path. The report shows in detail the practical development in laboratory consisting in assembling the link model using the OFDM modulation. This work includes a test of the model with the channel model found. Furthermore, a diversity technique increases even more the efficiency, by transmitting the signal through two different frequency channels: the receiver chooses the less affected channel by switching between them. An MPEG transport stream switcher does this. Its development is also explained in the report. Finally, the installation of an experimental link in a fading polluted region and the analysis of the first results are being showed. This item ships from multiple locations. Your book may arrive from Roseburg,OR, La Vergne,TN. Paperback. N° de réf. du libraire 9783640707539

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Description du livre GRIN Publishing, Germany, 2010. Paperback. État : New. 1. Auflage.. Language: French . Brand New Book ***** Print on Demand *****.Memoire (de fin d etudes) de l annee 2006 dans le domaine Ingenierie - Technique de Telecommunication / Technique de Communication, note: 1,3, Hochschule Mannheim (Softwaretechnik und Datenkommunikation), langue: Francais, resume This report contains the development of a DVB-T link, using OFDM modulation in order to increase the resistance against fading. It starts with an extract of the recommendations of the International Telecommunication Union (ITU) about microwave links. In particular, we developed a detailed radio link budget taking into account the effects of fading. A channel model was created modelling an overland path. The report shows in detail the practical development in laboratory consisting in assembling the link model using the OFDM modulation. This work includes a test of the model with the channel model found. Furthermore, a diversity technique increases even more the efficiency, by transmitting the signal through two different frequency channels: the receiver chooses the less affected channel by switching between them. An MPEG transport stream switcher does this. Its development is also explained in the report. Finally, the installation of an experimental link in a fading polluted region and the analysis of the first results are being showed. N° de réf. du libraire APC9783640707539

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