Seamless convergence of fiber and wireless systems for 5G and beyond networks

Pham Tien Dat*, Atsushi Kanno, Naokatsu Yamamoto, Tetsuya Kawanishi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)


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.

Original languageEnglish
Article number8543867
Pages (from-to)592-605
Number of pages14
JournalJournal of Lightwave Technology
Issue number2
Publication statusPublished - 2019 Jan 15


  • 5G and beyond networks
  • fiber-wireless convergence
  • mobile fronthaul
  • radio-over-fiber

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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