Open AccessImprovement of the transmission performance in multi-IF-over-fiber mobile fronthaul by using tone-reservation technique
Author(s) -
Minkyu Sung,
Changyo Han,
Seung-Hyun Cho,
Hwan Seok Chung,
Jong Hyun Lee
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.23.029615
Subject(s) - computer science , electronic engineering , transmission (telecommunications) , orthogonal frequency division multiplexing , quadrature amplitude modulation , nonlinear distortion , multiplexing , clipping (morphology) , modulation (music) , telecommunications , wavelength division multiplexing , optics , bit error rate , bandwidth (computing) , physics , channel (broadcasting) , engineering , acoustics , amplifier , linguistics , philosophy , wavelength
We demonstrate the improvement of the transmission performance based on tone-reservation technique in a multiple intermediate-frequency-over-fiber (IFoF) based mobile fronthaul. The tone-reservation technique can suppress nonlinear distortion by eliminating the high peak components of orthogonal frequency-division multiplexing (OFDM) signal. To prevent the regrowth of peak, we employ tone-reservation after multiplexing IF carriers. Furthermore, we use an out-of-band signal as the reserved tones to avoid any modification of a mobile signal. The impact of the number of IF carriers on peak-to-average power ratio (PAPR) characteristics is presented via numerical simulation. For the multi-IFoF based mobile fronthaul, we experimentally investigate the transmission performance of 36-IF carriers of the long term evolution-advanced (LTE-A) signals mapped with 64-quadrature amplitude modulation (QAM). It is clearly observed that the clipping-induced nonlinear distortion is dramatically suppressed by using tone-reservation. As a result, the transmission performance of 36-IF carriers of the LTE-A signal is improved by an error-vector-magnitude (EVM) of 4% (from 9.7% to 5.7%) after 20-km transmission.