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학술지 4 × 4 MIMO Architecture Supporting IFoF-based Analog Indoor Distributed Antenna System for 5G Mobile Communications
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저자
김준영, 성민규, 김언상, 조승현, 이종현
발행일
201810
출처
Optics Express, v.26 no.22, pp.28216-28227
ISSN
1094-4087
출판사
Optical Society of America(OSA)
DOI
https://dx.doi.org/10.1364/OE.26.028216
협약과제
18MH1200, 5G 이동통신을 위한 아날로그 IFoF기반 Indoor DAS 기술 개발, 이종현
초록
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 (< 짹 1 dB for the entire transmission bandwidth), low noise (<-136 dBm/Hz), and large dynamic range (spurious free dynamic range of >106 dB Hz2/3), 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.
KSP 제안 키워드
5G mobile communication system, Ambient Temperature, Analog Optical Link, Gain variation, High-fidelity, Large dynamic range, Low noise, Multiple input multiple output(MIMO), Small gain, Wide range, distributed antenna systems(DAS)