Please use this identifier to cite or link to this item: http://repositorio.inesctec.pt/handle/123456789/3655
Title: Experimental evaluation of a digitized fiber-wireless system employing sigma delta modulation
Authors: Luís Manuel Pessoa
Tavares,JS
Coelho,D
Henrique Salgado
Issue Date: 2014
Abstract: Digitized radio-over-fiber (D-RoF) transport schemes are being pointed as viable alternative solutions to their analog counterparts, in order to avoid distortion/dynamic range problems. Here we propose a novel D-RoF architecture that takes advantage of a bandpass sigma-delta modulator at the transmitter which subsequently permits the usage of a simpler/cheaper base station that avoids the employment of a digital to analog converter. The proposed architecture exploits the properties of the digital signal to enable the extraction of an higher carrier frequency through the employment of a bandpass filter. Furthermore, we present a comprehensive analysis regarding the impact of a low-cost electro-optic modulation on the quality of received demodulated signal. Finally, a comparison performance analysis between the conventional D-RoF and the proposed architecture is presented. We conclude that although the proposed architecture performs similarly to conventional D-RoF schemes, it is more competitive for either upgrading installed systems as well as for new deployments. (C) 2014 Optical Society of America
URI: http://repositorio.inesctec.pt/handle/123456789/3655
http://dx.doi.org/10.1364/oe.22.017508
metadata.dc.type: article
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