Analysis of quality of service in digital AM transmission through the use of codecs in USRP
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The objective was to conduct the study and analysis of the quality of service in digital transmission through the use of codecs in USRP. The development methodology defines the realization of the prototype for transmission and reception, starting with the selection of devices, the design, execution, and analysis of the results obtained. It was made the study of the particular conditions in the transmission and reception of the signal in digital AM (DRM), the implementation of the transmitter in GNU Radio, the configuration of the receiver in HDSDR and Dream SDR. In addition to the cards Ettus USRP N210, Ettus USRP B200, and RTL-SDR REALTEK RTL2832U. The result of this study was the quality of the service evaluated with respect to the transmission speed (Kbps) and the signal-to-noise ratio (SNR) to determine the fidelity in the reception of digital signals. Based on the results defined in the operating characteristics of each mode of robustness for a given transmission channel vary the values of the transmission speed and the signal-to-noise ratio, offering B mode better signal protection with respect to noise, while A mode offers higher transmission speed. Therefore, it is concluded that the DRM system uses the best sound compression technologies since it uses the MPEG-4 audio and voice algorithms that provide excellent sound quality at low bit rates with advanced audio coding (AAC).
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ETSI. (2014). ES 201 980 - V3.1.1 - Digital Radio Mondiale (DRM); System Specification. Intellectual Property, 195. https://www.etsi.org/deliver/etsi_es/201900_201999/201980/04.01.01_60/es_201980v040101p.pdf
Gil, P. D., & Santillán, F. G. (2015). Implementación de las Etapas de Codificación, Mapeo y Mapeo Inverso QAM de un Transmisor de Radio Digital Según el Estándar DRM30. In Universidad de Cuenca. https://doi.org/10.1017/CBO9781107415324.004
Henkel, M. (2008). Architektur eines DRM-Empfängers und Basisbandalgorithmen für Frequenzakquisition und Kanalschätzung. Institut Für Nachrichtentechnik Universität Karlsruhe (TH), 171. http://d-nb.info/998336947/34
Jara, A. E. (2005). Multiplexación por División de Frecuencia Ortogonal Codificada ( Cofdm ). In Universidad Austral de Chile. http://cybertesis.uach.cl/tesis/uach/2005/bmfcij.37m/doc/bmfcij.37m.pdf
Pérez, J. J. (2018). Estudio y Análisis de la Calidad de Servicio en la Transmisión Am Digital Mediante el Uso de Códecs en Usrp [Escuela Superior Politécnica de Chimborazo]. In Escuela Superior Politécnica De Chimborazo. http://dspace.espoch.edu.ec/bitstream/123456789/9283/1/20T01111.PDF
Puente, M. F. (2005). Implementacion del Servicio de Radiodifusion Digital Drm ( Digital Radio Mondiale ) en el Ecuador [ESPE]. In ESPE. https://repositorio.espe.edu.ec/bitstream/21000/2477/1/T-ESPE-027548.pdf
Salinas, M. A. (2011). Comparación de tecnologías de radio digital para su aplicación en México. In Universidad Nacional Autónoma de México. http://www.ptolomeo.unam.mx:8080/xmlui/bitstream/handle/132.248.52.100/161/A1.pdf?sequence=1
Sánchez, F., & Sagbay, G. (2013). Estudio y Análisis de la Estandarización y Regulación para la migración del sistema de radio analógico al digital en el Ecuador. Universidad Politécnica Salesiana, 228. dspace.ups.edu.ec/bitstream/123456789/5253/1/UPS-CT002755.pdf
Vargas, L. P. (2013). Diseño de Una Radiodifusora Digital en Base al Estándar Drm (Digital Radio Mondiale) Para la Banda de Am. In Escuela Politecnica Nacional. https://books.google.com.ec/books?id=yIAzAQAAMAAJ&pg=PA130&dq=enzima+papina&hl=es-419&sa=X&ved=0ahUKEwjQ-MbzjvfPAhVC7iYKHYM7A30Q6AEIQTAH#v=onepage&q=enzima papina&f=false
Wunsch, F., & Elsner, M. J. (2012). Implementation of a DRM + transmitter in the GNU Radio software radio framework Introduction. http://static1.1.sqspcdn.com/static/f/679473/20463131/1349016358370/wunsch-grcon12_gsoc_drm.pdf?token=IuVNQsWDcvePIw22CZ9A8VHdl1s%3D