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학술지 Investigation of Optical Power Budget for Expanding Indoor-mobile Coverage in 5G Indoor Distributed Antenna System (DAS) Supporting 32 FAs Transmission
Cited 0 time in scopus
저자
김언상, 김준영, 성민규, 조승현, 정환석, 이종현
발행일
202002
출처
Optics Communications, v.457, pp.1-6
ISSN
0030-4018
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.optcom.2019.124671
협약과제
19MH1200, 5G 이동통신을 위한 아날로그 IFoF기반 Indoor DAS 기술 개발, 이종현
초록
© 2019 Elsevier B.V. We experimentally present the maximum optical power budget in the analog IFoF-based indoor distributed antenna system (DAS) link supporting 32 FAs transmission of 5G wireless signals. For maximum optical power budget, we derive the maximum launched optical power and the optimum optical modulation index (OMI)/frequency assignment (FA) based on laser over-modulation. To investigate the effect, we analyze the impacts of nonlinear distortion of the single-mode-fiber (SMF) on the Tx side, and influence of noise and distortions of the analog IFoF-based indoor DAS link. Also, we include the avalanche photodiode (APD) as an optical receiver and the erbium-doped fiber amplifier (EDFA) as an optical power booster in mmWave 5G based indoor DAS link to meet the transmission performance at low received optical power. It is experimentally observed that the optical power budget is improved with using the laser over-modulation by 23 dB in analog IFoF based 5G indoor DAS link for 32 FAs x 100 MHz 5G wireless signals.
키워드
Distributed antenna system (DAS), Intermediate frequency over fiber (IFoF), Laser over-modulation, Radio over fiber (RoF)
KSP 제안 키워드
100 MHz, 5G wireless, Avalanche photo diode(APD), Mobile coverage, Modulation Index, Optical power, Optical receiver, Over-modulation, Radio over fiber(ROF), Single mode, Wireless signal