Digital equalization of time-delay array receivers on coherent laser communications
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Cita com:
hdl:2117/100618
Tipus de documentArticle
Data publicació2017-01-15
Condicions d'accésAccés obert
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Abstract
Field conjugation arrays use adaptive combining techniques on multi-aperture receivers to improve the performance of coherent laser communication links by mitigating the consequences of atmospheric turbulence on the down-converted coherent power. However, this motivates the use of complex receivers as optical signals collected by different apertures need to be adaptively processed, co-phased, and scaled before they are combined. Here, we show that multiple apertures, coupled with optical delay lines, combine retarded versions of a signal at a single coherent receiver, which uses digital equalization to obtain diversity gain against atmospheric fading. We found in our analysis that, instead of field conjugation arrays, digital equalization of time-delay multi-aperture receivers is a simpler and more versatile approach to accomplish reduction of atmospheric fading.
Descripció
© [2017 Optical Society of America.]. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
CitacióBelmonte, A. Digital equalization of time-delay array receivers on coherent laser communications. "Optics letters", 15 Gener 2017, vol. 42, núm. 2, p. 310-313.
ISSN0146-9592
Versió de l'editorhttps://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-2-310
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