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http://dspace.udla.edu.ec/handle/33000/12375| Tipo de material : | bachelorThesis |
| Título : | Análisis de la probabilidad de error de bit de sistemas MIMO que utilizan el detector de máxima verosimilitud en escenarios con estimación imperfecta del canal |
| Autor : | Balseca Bravo, Francisco Javier |
| Tutor : | Ramiro Carvajal, Doctor Henry |
| Palabras clave : | TECNOLOGÍAS DE COMUNICACIÓN E INFORMACIÓN;ASPECTOS TECNOLÓGICOS;ONDAS DE RADIO;ESPECTRO RADIOELÉCTRICO |
| Fecha de publicación : | 2020 |
| Editorial : | Quito: Universidad de las Américas, 2020 |
| Citación : | Balseca Bravo, F. J. (2020). Análisis de la probabilidad de error de bit de sistemas MIMO que utilizan el detector de máxima verosimilitud en escenarios con estimación imperfecta del canal (Tesis de pregrado). Universidad de las Américas, Quito. |
| Resumen : | Los sistemas de comunicación inalámbrica constituyen una de las áreas de mayor desarrollo de las redes de telecomunicaciones, las cuales son impulsadas por nuevas tecnologías... |
| Descripción : | Wireless communication systems constitute one with the areas of greatest development related to telecommunications networks. The exponential growth of users demands faster connections and higher transmission speed, which leads us to think about how to take advantage of using the frequency spectrum efficiently. The fifth generation (5G) of mobile communications aims more efficient technologies that improve the system performance. One of these techniques is multiple input multiple output (MIMO), which involves the use of various transmitting and receiving antennas. This technique is the main motivation for the present work, in which the bit error rate (BER) of a MIMO system is analyzed, in a channel with Rayleigh fading using the maximum likelihood detector (MLD) in the receiver considering also imperfect channel estimation, with binary phase shift keying (BPSK) and four level quadrature amplitude modulation (4 QAM). The results show that when the number of transmitting antennas is increased, the system performance degrades, but when the number of receiving antennas increases, the BER decreases. An interesting aspect is that, as the transmission antennas increase, the inclination of the BER curves as a function of the sign alto noise ratio does not change and remains parallel, that is, the system maintains its diversity; as well, it was observed that the imperfect estimation of the channel considerably affects the performance of the receiver, establishing that, for BPSK, an imperfect estimation of 95 percent is required for the system performance to be reasonable. The same for 4 QAM with 98 percent. Key words: MIMO, MLD, Imperfect estimation channel. |
| URI : | http://dspace.udla.edu.ec/handle/33000/12375 |
| Aparece en las colecciones: | Ingeniería en Redes y Telecomunicaciones |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| UDLA-EC-TIRT-2020-19.pdf | 2,21 MB | Adobe PDF | Visualizar/Abrir |
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