58.74-Gb/s 2×2 MIMO 60-GHz Optical/Wireless System with Simple Power-Detector Down-Conversion

Wen Huang Chen, Chao Wei Chen, Chun-Ting Lin*, Chia Chien Wei, Sien Chi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We demonstrate a 58.74-Gb/s V -band orthogonal frequency-division multiplexing (OFDM) radio-over-fiber (RoF) system employing the 2× 2 multiple-input-multiple-output (MIMO) technology and power detector for down-conversion for the first time. Additional radio frequency (RF) tone is generated and transmitted from central station to replace the local oscillator at wireless receiver for power detector down-conversion. To enhance spectrum efficiency, the gap mymargin between OFDM signal and RF tone is not needed. However, the down-converted signal will suffer signal-to-signal beating interference (SSBI). In this letter, we propose and successfully employ the 2 × 2 MIMO SSBI mitigation schemes to mitigate SSBI, resulting in 45% capacity improvement.

Original languageEnglish
Article number8695718
Pages (from-to)897-900
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number11
StatePublished - 1 Jun 2019


  • OFDM
  • Optical fiber communication
  • RF down-conversion
  • radio frequency photonics
  • signal-to-signal beating noise

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