Open Access4 × 4 MIMO architecture supporting IFoF-based analog indoor distributed antenna system for 5G mobile communications
Author(s) -
JoonYoung Kim,
Minkyu Sung,
EonSang Kim,
Seung-Hyun Cho,
Jong Hyun Lee
Publication year - 2018
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.028216
Subject(s) - mimo , computer science , distributed antenna system , bandwidth (computing) , optical link , electronic engineering , dynamic range , telecommunications , free space optical communication , communications system , antenna (radio) , optical communication , optical fiber , engineering , computer vision , channel (broadcasting)
We demonstrate the analog indoor distributed antenna system (DAS) for 5G mobile communications that supports 4 × 4 multiple-input multiple-output (MIMO) configuration. For this, we exploit a pair of intermediate frequency over fiber (IFoF)-based analog optical links, transporting 32 frequency allocation (FA) 5G mobile signals (effectively ~4 GHz bandwidth). The analog optical link manifests its high fidelity in the measured characteristics: small gain variation (< ± 1 dB for the entire transmission bandwidth), low noise (<-136 dBm/Hz), and large dynamic range (spurious free dynamic range of >106 dB∙Hz 2/3 ), subsequently providing superior error vector magnitude (EVM) performance (~2%) for a wide range of ambient temperatures (-20 ~60°C). Consequently, the IFoF-based 4 × 4 MIMO supporting analog indoor DAS is capable of providing record high peak throughput of 5.3 Gb/s for millimeter wave based 5G mobile communication system.