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Continuous-Wave Propagation Channel-Sounding Measurement System - Testing, Verification, and Measurements

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Optimización de la técnica de modulación adaptativa utilizando el modelo de propagación estándar para canales de

Rahim Khan¹, Zahid Ullah Khan², Sher Taj³

¹College of Information and Communication Engineering, Harbin Engineering University, Harbin150001, China.

Scientific reports

|August 21, 2025

Resumen

Este resumen es generado por máquina.

Este estudio introduce una técnica de modulación adaptativa integrada con el modelo de propagación estándar (SPM) para mejorar la eficiencia de la comunicación inalámbrica. El sistema mejorado con SPM reduce significativamente la tasa de error de bits (BER) y aumenta la eficiencia espectral para enlaces de largo alcance.

Palabras clave:

Modulación adaptativa Tasa de error de bits Diferentes canales de comunicación Especificación del cambio de fase M-ary Modulación de la amplitud de la cuadratura M-ary Relación señal/interferencia más ruido Modelo de propagación estándar

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Área de la Ciencia:

Sistemas de comunicación inalámbrica
Procesamiento de señales
Ingeniería de las telecomunicaciones

Sus antecedentes:

Los sistemas inalámbricos modernos se enfrentan a limitaciones como la pérdida de paquetes y la baja eficiencia espectral.
Los paradigmas de comunicación existentes requieren una mejora para un mejor rendimiento.

Objetivo del estudio:

Mejorar la eficiencia de la comunicación en los sistemas inalámbricos utilizando una técnica de modulación adaptativa.
Para minimizar la tasa de error de bits (BER) y maximizar el rendimiento de los enlaces celulares de largo alcance.
Optimizar los parámetros del modelo de propagación estándar (SPM) para mejorar la utilización del ancho de banda.

Principales métodos:

Aprovechó una técnica de modulación adaptativa integrada con el Modelo de Propagación Estándar (SPM).
El rendimiento evaluado a través de los modelos de desvanecimiento Aditivo de Ruido Gaussiano Blanco (AWGN), Rayleigh y Rician.
Se empleó un algoritmo de optimización avanzado para seleccionar dinámicamente los parámetros SPM.

Principales resultados:

Se logró un objetivo BER de 10-2 y una mayor eficiencia espectral para la modulación de 64 QAM en un radio de 6 km de la célula.
Se demostraron mejoras significativas en la relación señal-interferencia-más-ruido (SINR): 40% (AWGN), 43% (Rayleigh) y 41% (Rician).
El sistema mejorado con SPM permitió el despliegue estable de 64-QAM con un SINR superior y un BER reducido en comparación con los métodos no SPM.

Conclusiones:

La técnica de modulación adaptativa integrada SPM propuesta mejora efectivamente la eficiencia de las comunicaciones inalámbricas.
El sistema demuestra un rendimiento robusto en diversas condiciones de canal, superando a los enfoques convencionales.
Los parámetros SPM optimizados son cruciales para lograr una alta eficiencia espectral y un bajo BER en enlaces celulares de largo alcance.