He Jiale, Li Borui, Deng Lei, Tang Ming, Gan Lin, Fu Songnian, Shum Perry Ping, Liu Deming
Opt Express. 2016 Jun 13;24(12):13418-28. doi: 10.1364/OE.24.013418.
In this paper, the feasibility of space division multiplexing for optical wireless fronthaul systems is experimentally demonstrated by implementing high speed MIMO-OFDM/OQAM radio signals over 20km 7-core fiber and 0.4m wireless link. Moreover, the impact of optical inter-core crosstalk in multicore fibers on the proposed MIMO-OFDM/OQAM radio over fiber system is experimentally evaluated in both SISO and MIMO configurations for comparison. The experimental results show that the inter-core crosstalk tolerance of the proposed radio over fiber system can be relaxed to -10 dB by using the proposed MIMO-OFDM/OQAM processing. These results could guide high density multicore fiber design to support a large number of antenna modules and a higher density of radio-access points for potential applications in 5G cellular system.
在本文中，通过在20公里长的7芯光纤和0.4米无线链路上实现高速MIMO-OFDM/OQAM无线电信号，对光无线前传系统进行空分复用的可行性进行了实验验证。此外，还在单输入单输出（SISO）和多输入多输出（MIMO）配置下，通过实验评估了多芯光纤中的光芯间串扰对所提出的光纤上的MIMO-OFDM/OQAM无线电系统的影响，以进行比较。实验结果表明，通过使用所提出的MIMO-OFDM/OQAM处理，所提出的光纤上无线电系统的芯间串扰容限可以放宽到-10 dB。这些结果可为高密度多芯光纤设计提供指导，以支持大量天线模块和更高密度的无线接入点，用于5G蜂窝系统的潜在应用。
