TY  - JOUR
TI  - DSP-Based 40 GB/s Lane Rate Next-Generation Access Networks
Y1  - 2018/10/30/
SN  - 1999-5903
N1  - Copyright © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access
article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
ID  - discovery10064434
KW  - fiber optics communications; next generation passive optical network; nonlinear equalization; maximum likelihood sequence estimation; link power budget
IS  - 12
A1  - Wei, J
A1  - Zhou, J
A1  - Giacoumidis, E
A1  - Haigh, PA
A1  - Tang, J
VL  - 10
UR  - https://doi.org/10.3390/fi10120118
AV  - public
N2  - To address the continuous growth in high-speed ubiquitous access required by residential users and enterprises, Telecommunication operators must upgrade their networks to higher data rates. For optical fiber access networks that directly connect end users to metro/regional network, capacity upgrade must be done in a cost- and energy-efficient manner. 40 Gb/s is the possible lane rate for the next generation passive optical networks (NG-PONs). Ideally, existing 10 G PON components could be reused to support 40 Gb/s lane-rate NG-PON transceiver, which requires efficient modulation format and digital signal processing (DSP) to alleviate the bandwidth limitation and fiber dispersion. The major contribution of this work is to offer insight performance comparisons of 40 Gb/s lane rate electrical three level Duobinary, optical Duobinary, and four-level pulse amplitude modulation (PAM-4) for incorporating low complex DSPs, including linear and nonlinear Volterra equalization, as well as maximum likelihood sequence estimation. Detailed analysis and comparison of the complexity of various DSP algorithms are performed. Transceiver bandwidth optimization is also undertaken. The results show that the choices of proper modulation format and DSP configuration depend on the transmission distances of interest.
JF  - Future Internet
ER  -