Open AccessMitigation of timing offset effect in IM/DD based OFDMA-PON uplink multiple access
Author(s) -
Sun Young Jung,
Sang Min Jung,
Hyoung Joon Park,
Sang Kook Han
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.013889
Subject(s) - telecommunications link , computer science , orthogonal frequency division multiple access , orthogonal frequency division multiplexing , passive optical network , utc offset , computer network , asynchronous communication , frequency division multiple access , electronic engineering , offset (computer science) , real time computing , wavelength division multiplexing , optics , engineering , physics , channel (broadcasting) , wavelength , programming language
In orthogonal frequency division multiple access based passive optical network (OFDMA-PON) uplink, synchronization between optical network units (ONUs) is very important to maintain orthogonality. The synchronization among uplink signals is considered as one of the main challenges in OFDMA-PON due to optical path difference. In this paper, the performance degradation according to timing offset between ONUs is experimentally analyzed. And we propose and demonstrate timing offset effect reduction in asynchronous multiple access by using CP extension and filter bank based multicarrier (FBMC) system in intensity modulation/direct detection (IM/DD) based OFDMA-PON uplink transmission.