Abstract

Filter bank multicarrier (FBMC) is a favourable candidate for next generation optical access networks due to its capability to operate without a cyclic prefix and its high resilience to synchronization errors in the system. In this paper, we analyze the performance of FBMC in upstream passive optical networks (PON), without the employment of inter optical network unit (inter-ONU) frequency guard bands. By using both experimental work and numerical simulations, the impact of relative time offsets on inter-ONU orthogonality is studied. Furthermore, numerical simulations are also used to study the impact of frequency offsets in such systems. Moreover, comparisons are drawn to orthogonal frequency division multiplexing (OFDM)-based upstream PONs. This paper experimentally demonstrates that imperfect time synchronization impacts all subcarriers in an OFDM system, while it affects only the immediately adjacent subcarriers in an FBMC system, which could be corrected for by the restoration of synchronicity between users. A simple feedback mechanism is experimentally demonstrated to automatically restore orthogonality and synchronization between users in order to validate the practical implementation of the scheme.

© 2017 IEEE

Mitigation of timing offset effect in IM/DD based OFDMA-PON uplink multiple access

Sun-Young Jung, Sang-Min Jung, Hyoung-Joon Park, and Sang-Kook Han
Opt. Express 23(11) 13889-13898 (2015)

Comparison of OFDMA and GFDMA for Next-Generation PONs

Arsalan Saljoghei, Arman Farhang, Colm Browning, Philip Perry, Nicola Marchetti, Linda E. Doyle, and Liam P. Barry
J. Opt. Commun. Netw. 9(12) 1064-1073 (2017)

An energy-efficient and elastic optical multiple access system based on coherent interleaved frequency division multiple access

Yuki Yoshida, Akihiro Maruta, Kenji Ishii, Yuji Akiyama, Tsuyoshi Yoshida, Naoki Suzuki, Kazuumi Koguchi, Junichi Nakagawa, Takashi Mizuochi, and Ken-ichi Kitayama
Opt. Express 21(10) 12282-12301 (2013)

Optical pulse division multiplexing-based OBI reduction for single wavelength uplink multiple access in IM/DD OFDMA-PON

Sun-Young Jung, Chang-Hun Kim, Sang-Min Jung, and Sang-Kook Han
Opt. Express 24(25) 29198-29208 (2016)

Experimental Demonstration of Upstream Transmission in Digital Filter Multiple Access PONs With Real-Time Reconfigurable Optical Network Units

Xiao Duan, Roger P. Giddings, Sa’ad Mansoor, and J. M. Tang
J. Opt. Commun. Netw. 9(1) 45-52 (2017)