Title :
Aliasing and inter-channel interference impact on the performance of multi-channel OFDM-UWB distribution in FTTH networks
Author :
Alves, Tiago ; Cartaxo, Adolfo
Author_Institution :
Group of Res. on Opt. Fibre Telecommun. Syst., Inst. Super. Tecnico, Lisbon
Abstract :
The influence of aliasing components and inter-channel interference on the multi-channel binary phase-shift keying (BPSK) orthogonal frequency division multiplexing (OFDM) ultra-wide band (UWB) radio signals performance in fibre-to-the-home (FTTH) networks is evaluated through numerical simulation. It is shown performance degradation exceeding 1 dB when a low-pass filter (LPF) at the transmitter output is used to reduce the aliasing components intensity. However, in the absence of the LPF, a considerable performance variation between OFDM-UWB channels occurs due to inter-channel interference resulting from the aliasing components. Instead, when the LPF is used to decrease the aliasing components intensity, the performance of each OFDM-UWB channel is the same as the one obtained in single-channel operation.
Keywords :
OFDM modulation; adjacent channel interference; low-pass filters; numerical analysis; optical fibre subscriber loops; phase shift keying; radio-over-fibre; ultra wideband communication; FTTH networks; OFDM-UWB channels; aliasing components; binary phase-shift keying; fibre-to-the-home networks; inter-channel interference; low-pass filter; multichannel OFDM-UWB distribution; numerical simulation; orthogonal frequency division multiplexing; radio-over-fibre; ultra-wide band radio signals; Binary phase shift keying; Degradation; Interchannel interference; Low pass filters; Numerical simulation; OFDM; Optical fiber subscriber loops; Phase shift keying; RF signals; Radiofrequency interference; aliasing; fibre-to-the-home; inter-channel interference; orthogonal frequency division multiplexing; radio over fibre; ultra-wide band signals;
Conference_Titel :
Transparent Optical Networks, 2008. ICTON 2008. 10th Anniversary International Conference on
Conference_Location :
Athens
Print_ISBN :
978-1-4244-2625-6
Electronic_ISBN :
978-1-4244-2626-3
DOI :
10.1109/ICTON.2008.4598740
