DSP-Based 40 GB/s Lane Rate Next-Generation Access Networks

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...

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Bibliographic Details
Published inFuture internet Vol. 10; no. 12; p. 118
Main Authors Wei, Jinlong, Zhou, Ji, Giacoumidis, Elias, Haigh, Paul, Tang, Jianming
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.12.2018
Subjects
Algorithms
Architectural engineering
Bandwidths
Complexity
Digital signal processing
End users
Engineering
Equalization
fiber optics communications
Format
Internet of Things
link power budget
Maximum likelihood estimation
maximum likelihood sequence estimation
next generation passive optical network
Noise
nonlinear equalization
Optical communication
Optical fibers
Optimization
Performance assessment
Photonics
Pulse amplitude modulation
Signal processing
Transmitters
User requirements
Wave division multiplexing
Los Angeles California
United Kingdom > UK
United States > US
China
Germany
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Summary: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.
ISSN:1999-5903
1999-5903
DOI:10.3390/fi10120118