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Triplicar la capacidad de las comunicaciones inalámbricas utilizando la polarización electromagnética
M R Andrews1, P P Mitra, R deCarvalho
1Bell Labs, Lucent Technologies, Murray Hill, New Jersey 07974, USA. mikea@bell-labs.com
Nature
|February 24, 2001
Resumen
La capacidad de comunicación inalámbrica se puede triplicar en entornos de dispersión mediante la utilización de seis estados de polarización electromagnética, no sólo los dos típicamente utilizados. Este avance mejora la eficiencia de la transmisión de datos más allá de los métodos actuales de diversidad de polarización.
Área de la Ciencia:
- El electromagnetismo y la propagación de ondas.
- Ingeniería de comunicaciones inalámbricas Ingeniería de comunicaciones inalámbricas.
- Teoría de la información La teoría de la información es la teoría de la información.
Sus antecedentes:
- El ancho de banda inalámbrico es un recurso crítico y costoso en la infraestructura de información moderna.
- Las radiocomunicaciones tradicionales utilizan un canal por frecuencia, con doble polarización que ofrece dos canales.
- Los entornos dispersos, como las áreas urbanas, ofrecen canales espaciales adicionales para la mejora de la capacidad.
Objetivo del estudio:
- Investigar el potencial para el aumento de la capacidad de canal en las comunicaciones inalámbricas.
- Explorar el uso de estados de polarización electromagnética adicionales más allá de los dos convencionales.
- Demostrar un método para mejorar significativamente las tasas de transmisión de datos en entornos de dispersión.
Principales métodos:
- Análisis de la propagación de ondas electromagnéticas en entornos de dispersión.
- Aplicación de las técnicas de procesamiento de señales de múltiples entradas/salidas (MIMO).
- Explotación de seis estados de polarización eléctrica y magnética distinguibles.
Principales resultados:
- Se logró un aumento de tres veces en la capacidad del canal en comparación con las señales convencionales de doble polarización.
- Esta mejora se demostró en entornos caracterizados por la dispersión de ondas.
- El aumento de la capacidad se debe a la utilización de seis estados de polarización en lugar de los dos habituales.
Conclusiones:
- Los sistemas de comunicación inalámbrica pueden lograr velocidades de datos significativamente más altas al aprovechar un espectro más amplio de estados de polarización.
- Los entornos de dispersión son particularmente propicios para explotar estos canales espaciales y de polarización adicionales.
- Esta investigación abre nuevas vías para optimizar la capacidad y la eficiencia de la comunicación inalámbrica.
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