Title :
Pre-emphasis performance improvement of OFDM-UWB signals transmitted over FTTH networks using directly modulated lasers
Author :
Morgado, J.A.P. ; Fonseca, Daniel ; Alves, Tiago ; Cartaxo, Adolfo V. T.
Author_Institution :
Group of Res. on Opt. Fibre Telecommun. Syst., Inst. de Telecomunicagoes, Lisbon, Portugal
Abstract :
This paper assesses, experimentally, the performance improvement achieved by pre-emphasis of orthogonal frequency-division multiplexing (OFDM) ultra-wideband (UWB) radio signals transmitted over standard single-mode fiber, using a commercially available low-cost directly modulated laser. Stable improvements along the time of the error-vector-magnitude, exceeding 3 dB, are reported for distances exceeding 50 km, for the OFDM-UWB sub-band centered on 3.43 GHz.
Keywords :
OFDM modulation; optical fibre amplifiers; optical fibre subscriber loops; ultra wideband communication; FTTH networks; OFDM-UWB signal; directly modulated laser; fiber-to-the-home networks; orthogonal frequency-division multiplexing; preemphasis performance improvement; single-mode fiber; ultra-wideband radio signal; Bandwidth; Modulation; Noise; Optical attenuators; Optical noise; Optical receivers; Optical transmitters; Directly modulated lasers; modulation index; next generation fiber-to-the-home networks; orthogonal frequency-division multiplexing; pre-emphasis; ultra-wideband;
Conference_Titel :
Photonics Global Conference (PGC), 2010
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-9882-6
DOI :
10.1109/PGC.2010.5706078
