Experimental evaluation of a digitized fiber-wireless system employing sigma delta modulation

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

L. M. Pessoa (Autor) FEUP; Tavares, JS (Autor) Outra; Coelho, D (Autor) Outra; H. M. Salgado (Autor) FEUP

Revista

Título: Optics Express

Vol. 22

Páginas: 17508-17523

ISSN: 1094-4087

Editora: Optical Society of America

Indexação

ISI Web of Knowledge - 27 Citações

Scopus - 29 Citações

Outras Informações

ID Authenticus: P-009-PDH

DOI: 10.1364/oe.22.017508

Abstract (EN): 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

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 16