MIMO-Supporting Radio-Over-Fiber System and its Application in mmWave-Based Indoor 5G Mobile Network
MIMO-Supporting Radio-Over-Fiber System and its Application in mmWave-Based Indoor 5G Mobile Network
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支持MIMO的光纤无线电系统及其在基于毫米波的室内5G移动网络中的应用
DOI：
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发表时间：
2020
影响因子：
4.7
通讯作者：
Jong Hyun Lee
中科院分区：
文献类型：
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作者：
Joonyoung Kim;Minkyu Sung;Seunghyun Cho;Young;Byoung;Sung;J. Lee;Jong Hyun Lee
我们演示了4 × 4多输入多输出（MIMO）支持基于毫米波的室内5G移动的网络，该网络基于分布式天线系统（DAS），该分布式天线系统具有空中接口以接收来自例如移动的前传的远程无线电头端（RRH）。为了实现成本/带宽效率和低延迟的室内5G DAS网络，我们开发了基于中频光纤（IFoF）技术的光纤无线电（RoF）系统。更具体地说，我们在IFoF链路中同时使用波分复用和频分复用，以便传输4 × 4 MIMO 5G信号，其有效带宽为3.2 GHz（= 4 × 800 MHz，其中每个天线处理800 MHz 5G信号）。支持4 × 4 MIMO的IFoF链路在最长2 km的下行链路和上行链路的所有信道上具有<4.5%的误差向量幅度（EVM）性能。利用IFoF链路、毫米波频率转换模块和控制/管理平面的整个RoF系统证明其自身满足3GPP定义的EVM要求（即，8%，在所有渠道。基于RoF系统，我们结合韩国电信5G移动的网络演示了室内5G DAS网络，即，5G基带单元和RRH，调查下行链路和上行链路吞吐量。最终用户的总吞吐量达到了1.4Gb/s，其中DAS网络引起的额外延迟仅为单模光纤传输延迟之外的几百纳秒。
We demonstrate 4 × 4 multiple-input and multiple-output (MIMO) supporting mmWave-based indoor 5G mobile network based on a distributed antenna system (DAS) that has over-the-air interface to receive the broadband wireless signal from, e.g., remote radio head (RRH) of mobile fronthaul. To realize the cost/bandwidth-efficient and low-latency-inducing indoor 5G DAS network, we exploit the radio-over-fiber (RoF) system that is based on the intermediate frequency-over-fiber (IFoF) technology. To be more specific, we make simultaneous use of wavelength- and frequency-division multiplexing in the IFoF link so as to transport 4 × 4 MIMO 5G signal of which the bandwidth is effectively 3.2 GHz (= 4 × 800 MHz, where each antenna deals with 800 MHz 5G signal). The 4 × 4 MIMO-supporting IFoF link has error vector magnitude (EVM) performance of <4.5% at all channels of downlink and uplink for up to 2 km. The whole RoF system, exploiting the IFoF link, mmWave frequency conversion module, and control /management plane, proves itself to meet the 3GPP-defined EVM requirement (i.e., 8%) at all channels. Based on the RoF system, we demonstrate the indoor 5G DAS network in conjunction with Korea Telecom 5G mobile network, i.e., 5G baseband unit and RRH, investigating the downlink and uplink throughputs. We achieve ∼4 Gb/s total throughput for end user, where the additional latency induced by the DAS network is only a few hundreds of nanoseconds other than the single mode fiber transmission delay.
用于节能室内无线通信的宽带光纤无线电分布式天线系统
DOI：
10.1109/vetecs.2010.5493764
发表时间：
2010
期刊：
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影响因子：
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作者：
Crisp M
通讯作者：
Crisp M