期刊
IEEE PHOTONICS TECHNOLOGY LETTERS
卷 35, 期 6, 页码 293-296出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2023.3241438
关键词
Optical attenuators; Optical fibers; Optical fiber amplifiers; Optical fiber networks; Wireless communication; Relays; Radio frequency; Microwave photonics; optical fiber; FSO; millimeter wave
This letter presents a method for data transmission and coverage extension in an indoor environment using the radio-over-fiber (RoF) technology and a 26 GHz millimeter-wave (mmW) radio signal. The proposed system consists of two RoF seamless wireless links to emulate a mobile fronthaul and overcome the higher attenuation of the mmW signal. Experimental evaluation shows the possibility of signal transmission over up to 20 km of optical fiber with minimal error vector magnitude for 64-QAM.
This letter presents data transmission over a 26 GHz millimeter-wave (mmW) radio signal and its coverage extension in an indoor environment using the radio-over-fiber (RoF) technology. The proposed system consists of two RoF seamless wireless links to emulate a mobile fronthaul using a transparent RoF relay link to overcome higher attenuation of the mmW signal. The system is experimentally evaluated for up to 64-quadrature amplitude modulation (QAM), showing the possibility of signal transmission over up to 20 km of optical fiber in the first Section transmission scheme without the usage of an optical amplifier. For the system with 20 km and 30 m long RoF links as well as 4 m and 1 m long relays with no optical amplification, the minimal experimentally measured error vector magnitude is as low as 5% for 64-QAM. Further, a self-developed integrable optoelectronic extender is used for the relay RoF system to simplify the antenna site and keep its footprint small. Moreover, the proposed setup is extended using an optical amplifier toward a scalable scheme with up to 75 km of optical fiber and 5 m long free space optical link.
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