Title :
Power budget improvement for coherent optical — OFDM access upstream transmission using TCM with constellation shaping
Author :
Yingkan Chen ; Ruprecht, Christian ; Rosenkranz, Werner ; Hanik, Norbert
Author_Institution :
Lehrstuhl fur Nachrichtentechnik, Tech. Univ. Munchen, München, Germany
Abstract :
Power-budget improvement to support more Optical Network Units (ONU) is the most significant issue for passive optical access networks. Investigation on Trellis coded modulation for multi-user phase noise channel is conducted to improve the power budget for CO-OFDMA uplink transmission. The power budget is doubled enabling 37.4-km CO-OFDMA upstream transmission supporting 32 ONUs. To our best knowledge, this is the first field trial of optical access network using coherent optical - OFDM technique.
Keywords :
OFDM modulation; frequency division multiple access; passive optical networks; phase noise; trellis coded modulation; CO-OFDMA uplink transmission; ONU; TCM; Trellis coded modulation; coherent optical-OFDM access upstream transmission; coherent optical-OFDM technique; constellation shaping; distance 37.4 km; multi-user phase noise channel; optical network units; passive optical access networks; power budget improvement; Bit error rate; OFDM; Optical network units; Passive optical networks; Phase noise; Phase shift keying; Quadrature amplitude modulation; CO-OFDMA; laser phase noise; power budget; trellis-coded modulation;
Conference_Titel :
Transparent Optical Networks (ICTON), 2014 16th International Conference on
Conference_Location :
Graz
DOI :
10.1109/ICTON.2014.6876346
