Title :
Optimum CSPR evaluation of heterodyne envelope receivers in OFDM-PONs
Author :
Behnam Shariati, M. ; Cano, Ivan N. ; Santos, Maria C.
Author_Institution :
Univ. Politec. de Catalunya, Barcelona, Spain
Abstract :
A heterodyne envelope (HE) receiver (RX) is investigated in the context of orthogonal frequency division multiplexing (OFDM) passive optical networks (PONs). Impacts of limited roll-off factor of shaping filter and required guard-band (GB) are studied through numerical simulations, showing that the Carrier to Signal Power Ratio (CSPR) value plays a significant role in the systems performance. For a QPSK system with 10 Gbps bitrate and for a bit error ratio (BER) quality threshold of 10-3 we show an improvement of 10.8 dB in sensitivity and 25% in spectral efficiency by using an optimum CSPR value as compared to unity CSPR.
Keywords :
OFDM modulation; error statistics; numerical analysis; optical filters; optical modulation; optical receivers; passive optical networks; quadrature phase shift keying; BER; GB; HE RX; OFDM-PON; QPSK system; bit error ratio; bit rate 10 Gbit/s; carrier to signal power ratio value; efficiency 25 percent; guard-band; heterodyne envelope receivers; limited roll-off factor; numerical simulations; optimum CSPR evaluation; orthogonal frequency division multiplexing; passive optical networks; shaping filter; OFDM; Optical fiber sensors; Optical fibers; Optical filters; Receivers; active ONU; heterodyne envelope; optimum CSPR; roll-off; spectral efficiency;
Conference_Titel :
Transparent Optical Networks (ICTON), 2014 16th International Conference on
Conference_Location :
Graz
DOI :
10.1109/ICTON.2014.6876495
