4 × 4 MIMO architecture supporting IFoF-based analog indoor distributed antenna system for 5G mobile communications

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 alloca...

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Bibliographic Details
Published inOptics express Vol. 26; no. 22; pp. 28216 - 28227
Main Authors Kim, Joonyoung, Sung, Minkyu, Kim, Eon-Sang, Cho, Seung-Hyun, Lee, Jong Hyun
Format Journal Article
LanguageEnglish
Published United States 29.10.2018
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Summary: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 ), 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.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.26.028216