We present a full-duplex fiber-wireless system in the $W$ -band for simultaneous transmission of multiple-input multiple-output (MIMO) signals in downlink and uplink directions. The proposed system uses wavelength-division multiplexing in the optical link and parallel-aligned/orthogonally aligned antenna polarizations in the wireless link for the MIMO and full-duplex signal transmission. Satisfactory performance is experimentally confirmed for 2× 2 MIMO OFDM and LTE-A signals in both directions. The system is highly spectral-efficient and scalable for large-scale MIMO signal transmission.
- Microwave photonics
- mobile fronthaul
- optical communications
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Electrical and Electronic Engineering