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학술지 Demonstration of Mobile Fronthaul Test Bed Based on RoF Technology Supporting Two Frequency Assignments and 2 × 2 MIMO Antennas
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저자
조승현, 한찬교, 정환석, 이종현
발행일
201512
출처
ETRI Journal, v.37 no.6, pp.1055-1064
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.15.0115.0146
협약과제
14ZI1300, 광 기반 Compact Radio & Dense Digital 이동통신 기지국 핵심기술 개발, 이종현
초록
We demonstrate a next-generation high-capacity mobile fronthaul based on radio over fiber (RoF) technology, which links between a digital unit and a radio unit supporting two frequency assignments and 2 × 2 multiple input, multiple output antennas. To confirm the technical feasibility of a mobile fronthaul, we experimentally investigate its down- and uplink end-to-end performances including the optical and radio frequency (RF) signal path. Frequency-dependent performance deviations, error vector magnitude variations, overall system performance variations caused by optical to electrical conversion, and intermediate frequency to RF conversions are examined. Experimental verifications on multiple LTE uplink signals are performed for the first time. We also demonstrate several commercial mobile Internet services, YouTube video streaming, and file transfers using off-the-shelf mobile devices, through a mobile fronthaul based on RoF.
키워드
C-RAN, DU, LTE, Mobile fronthaul, RoF, RU
KSP 제안 키워드
Cloud-RAN(C-RAN), End to End(E2E), High-capacity, Intermediate frequency, LTE uplink, MIMO Antenna, Mobile devices, Mobile fronthaul, Mobile internet services, Next-generation, Off-the-shelf