Journal article
25 Gbit/s QPSK Hybrid Fiber-Wireless Transmission in the W-Band (75–110 GHz) With Remote Antenna Unit for In-Building Wireless Networks
Department of Photonics Engineering, Technical University of Denmark1
Coding and Visual Communication, Department of Photonics Engineering, Technical University of Denmark2
Metro-Access and Short Range Systems, Department of Photonics Engineering, Technical University of Denmark3
Networks Technology and Service Platforms, Department of Photonics Engineering, Technical University of Denmark4
Technical University of Denmark5
Systems, Department of Photonics Engineering, Technical University of Denmark6
In this paper, we demonstrate a photonic up-converted 25 Gbit/s fiber-wireless quadrature phase shift-keying (QPSK) data transmission link at the W-band (75–110 GHz). By launching two free-running lasers spaced at 87.5 GHz into a standard single-mode fiber (SSMF) at the central office, a W-band radio-over-fiber (RoF) signal is generated and distributed to the remote antenna unit (RAU).
One laser carries 12.5 Gbaud optical baseband QPSK data, and the other acts as a carrier frequency generating laser. The two signals are heterodyne mixed at a photodetector in the RAU, and the baseband QPSK signal is transparently up-converted to the W-band. After the wireless transmission, the received signal is first down-converted to an intermediate frequency (IF) at 13.5 GHz at an electrical balanced mixer before being sampled and converted to the digital domain.
A digital-signal-processing (DSP)-based receiver is employed for offline digital down-conversion and signal demodulation. We successfully demonstrate a 25 Gbit/s QPSK wireless data transmission link over a 22.8 km SSMF plus up to 2.13 m air distance with a bit-error-rate performance below the $2 times 10^{-3}$ forward error correction (FEC) limit.
The proposed system may have the potential for the integration of the in-building wireless networks with the fiber access networks, e.g., fiber-to-the-building (FTTB).
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2012 |
| Pages: | 691-698 |
| ISSN: | 19430655 and 19430647 |
| Types: | Journal article |
| DOI: | 10.1109/JPHOT.2012.2193563 |
| ORCIDs: | Borkowski, Robert , Zibar, Darko and Tafur Monroy, Idelfonso |
Adaptive optics Applied optics. Photonics DSP-based receiver FEC limit FTTB Optical mixing Optical modulation Optical polarization Optical receivers Optics. Light Phase shift keying QC350-467 QPSK hybrid fiber-wireless data transmission link RoF signal SSMF TA1501-1820 W-band radio-over-fiber signal distribution W-band radio-over-fiber signal generation Wireless communication antennas bit rate 25 Gbit/s bit-error-rate performance carrier frequency generating laser digital domain digital signal processing chips digital-signal-processing-based receiver distance 22.8 km electrical balanced mixer error statistics fiber access networks fiber-to-the-building forward error correction free-running lasers frequency 75 GHz to 110 GHz heterodyne mixing in-building wireless networks intermediate frequency microwave mixers microwave photonics millimetre wave antennas millimetre wave receivers offline digital down-conversion optical baseband QPSK data optical communications optical fibre subscriber loops optical links optical receivers photodetector photodetectors photonic up-converted fiber-wireless quadrature phase shift-keying quadrature phase shift keying radio over fiber radio-over-fibre remote antenna unit signal demodulation standard single-mode fiber transparently up-converted signal
