Seamless Convergence of Fiber and Wireless Systems for 5G and Beyond Networks
Seamless Convergence of Fiber and Wireless Systems for 5G and Beyond Networks
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DOI：
10.1109/jlt.2018.2883337
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发表时间：
2019-01
影响因子：
4.7
通讯作者：
P. Dat;A. Kanno;N. Yamamoto;T. Kawanishi
中科院分区：
文献类型：
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作者：
P. Dat;A. Kanno;N. Yamamoto;T. Kawanishi
我们提出了不同的前传系统，以促进基于毫米波（mmWave）频段光纤和无线系统无缝融合的未来移动网络。首先，通过将无线电信号封装到融合光纤毫米波系统上，提出了一种灵活的高性能无线前传系统。成功演示了系统上三个无线电信号的同时传输。其次，提出并演示了一种高性能光学自外差系统，用于高频段无线电接入信号的生成和传输。第三，提出了一种使用子载波复用中频光纤系统同时传输不同频段的多个无线电信号的高频谱效率光前传系统。实验证实了在微波以及低毫米波和高毫米波频段传输三种不同无线电信号的令人满意的性能。所提出的系统可以克服当前移动前传系统的挑战和瓶颈，并且可用于 5G 及其他网络的不同使用场景。
We propose different fronthaul systems for facilitating future mobile networks based on the seamless convergence of fiber-optic and wireless systems in the millimeter-wave (mmWave) bands. First, a flexible and high-performance wireless fronthaul system is proposed through an encapsulation of radio signals onto a converged fiber–mmWave system. A simultaneous transmission of three radio signals over the system is successfully demonstrated. Second, a high-performance optical self-heterodyne system is proposed and demonstrated for the generation and transmission of radio access signals in high-frequency bands. Third, a high-spectral-efficiency optical fronthaul system for the simultaneous transmission of multiple radio signals in different frequency bands is proposed using a subcarrier-multiplexing intermediate-frequency-over-fiber system. Satisfactory performance is experimentally confirmed for the transmission of three different radio signals in the microwave and low- and high-mmWave bands. The proposed systems can overcome the challenges and bottlenecks of the current mobile fronthaul systems and can be useful in different usage scenarios of 5G and beyond networks.