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  • Received: Sep. 7, 2016

    Accepted: Oct. 28, 2016

    Posted: Jan. 28, 2019

    Published Online: Jul. 26, 2018

    The Author Email: Jianqiang Li (

    DOI: 10.3788/COL201715.010011

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    Yuting Fan, Jianqiang Li, Yi Lei, Ming Tang, Feifei Yin, Yitang Dai, Kun Xu. Full-duplex transmission of IEEE 802.11ac-compliant MIMO WLAN signals over a 2-km 7-core fiber[J]. Chinese Optics Letters, 2017, 15(1): 010011

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Chinese Optics Letters, Vol. 15, Issue 1, 010011 (2017)

Full-duplex transmission of IEEE 802.11ac-compliant MIMO WLAN signals over a 2-km 7-core fiber

Yuting Fan1, Jianqiang Li1,*, Yi Lei1, Ming Tang2, Feifei Yin1, Yitang Dai1, and Kun Xu1

Author Affiliations

  • 1State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 2Wuhan National lab for Optoelectronics (WNLO) & National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, (HUST), Wuhan 430074, China


In this Letter, we experimentally demonstrate a full-duplex transmission system of IEEE 802.11ac-compliant multiple-input multiple-output (MIMO) signals over a 2-km 7-core fiber for in-building wireless local-area network (WLAN) distributed antenna systems. For full-duplex 3×3 MIMO demonstration, the crosstalk impacts of both fiber-transmission-only and optic-wireless transmission situation are evaluated. The results indicate that the impact of crosstalk on radio-over-fiber (ROF) link performance is not significant and the quality of the cascaded multi-core fiber and wireless channel is mainly determined by the wireless part. To further improve the system capacity, polarization multiplexing (PolMux) technology is employed to achieve a full-duplex 6×6 MIMO over a single 7-core fiber. Although employing the PolMux method will slightly decrease the EVM and condition number performance as opposed to a non-PolMux MCF system, it is still a competitive solution in large optical connection demand scenarios that require a low cost.