Evaluación de la calidad de percepción de las señales de voz transmitidas en diferentes condiciones de canal inalámbrico

Autores/as

DOI:

https://doi.org/10.33448/rsd-v10i9.18053

Palabras clave:

BPSK; 4QAM; MOS; BER; Canal AWGN; Canal Rician; Canal Rayleigh.

Resumen

En los servicios de comunicación, la calidad e integridad de la señal de voz en el receptor es un factor relevante que los operadores telefónicos deben considerar. En este artículo estudiamos el impacto de la degradación que se produce en el canal de transmisión sobre la señal de voz transmitida. Por tanto, se utilizan parámetros clave, como la puntuación media de opinión (MOS) relacionada con la señal de voz y la tasa de error de bit (BER), para evaluar cualitativa y cuantitativamente la señal de voz en cada escenario. Se utiliza un escenario de simulación de modulación, que considera los canales de desvanecimiento AWGN, Rician y Rayleigh, y dos modulaciones: BPSK y QAM. Estos canales tienen diferentes parámetros de configuración. Los resultados experimentales muestran que existen ciertos valores de índice de calidad MOS para cada tipo de canal con una configuración específica, mostrando que para cada escenario de transmisión hay una necesidad de adaptaciones en la combinación modulación-canal-ganancia para obtener un mejor desempeño.

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Publicado

25/07/2021

Cómo citar

RIBEIRO, D. A.; TAVARES, D. S.; SOUZA, P. H. M. de; SOUZA, P. G. M. de; GARCIA, H. V. S.; FURTINI, A. C. C.; ROSA, R. L.; RODRÍGUEZ, D. Z. Evaluación de la calidad de percepción de las señales de voz transmitidas en diferentes condiciones de canal inalámbrico. Research, Society and Development, [S. l.], v. 10, n. 9, p. e27610918053, 2021. DOI: 10.33448/rsd-v10i9.18053. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/18053. Acesso em: 17 jul. 2024.

Número

Sección

Ciencias de la educación