Practically Feasible Closed-Loop Digital Predistortion for VCSEL-MMF-Based Radio-over-Fiber links
MetadataShow full item record
The article demonstrates a novel Digital Predistortion (DPD) architecture for Mobile Front Haul links for the advanced Long-Term Evolution (LTE) and upcoming 5G networks. Precisely, the use of a feedback approximation method has been proposed and experimentally demonstrated herein that simplifies the complexities in realizing the practical DPD technique for Multi-Mode VCSELs and Multi-Mode Fibers based Radio over Fiber systems. As a figure of merit, linearization efficiency is provided in terms of Adjacent Channel Power Ratio, Normalized Mean Square Error and Error Vector Magnitude referring to a complete LTE frame occupying 10 MHz with 256-QAM modulation format.
KeywordsRadio over Fiber (RoF), Digital Predistortion (DPD), Indirect Learning Architecture (ILA), Adjacent Channel Power Ratio (ACPR), Vertical Cavity Surface Emitting Lasers (VCSEL), Long Term Evolution (LTE)
Document typePeer reviewed
Document versionFinal PDF
SourceRadioengineering. 2020 vol. 29, č. 1, s. 37-43. ISSN 1210-2512
- 2020/1