Journal article
100-GHz Wireless-Over-Fiber Links With Up to 16-Gb/s QPSK Modulation Using Optical Heterodyne Generation and Digital Coherent Detection
In this letter, a novel technique for direct conversion of an optical baseband quadrature phase-shift keying (QPSK) signal to a millimeter-wave wireless signal and subsequent signal demodulation is reported. Optical heterodyne mixing of the optical baseband QPSK signal with a free-running unmodulated laser for the wireless signal generation is employed.
To correct for the phase and frequency offset originating from the heterodyne mixing of the two free-running lasers, wireless signal demodulation based on optical coherent detection in combination with baseband digital signal processing is implemented. As a proof of concept, 5-Gb/s amplitude-shift keying and up to a 16-Gb/s QPSK wireless signal in the band of 75–110 GHz was generated and successfully demodulated.
All-photonic millimeter-wave wireless signal generation and digital coherent detection at baud-rate are employed without complex optical phase-locked loop.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2010 |
| Pages: | 1650-1652 |
| ISSN: | 19410174 and 10411135 |
| Types: | Journal article |
| DOI: | 10.1109/LPT.2010.2076801 |
| ORCIDs: | Zibar, Darko and Tafur Monroy, Idelfonso |
Coherent detection Optical attenuators Optical mixing Optical receivers Optical signal processing Optical transmitters Phase shift keying QPSK modulation Wireless communication all-photonic millimeter-wave wireless signal generation amplitude shift keying amplitude-shift keying baseband digital signal processing bit rate 16 Gbit/s bit rate 5 Gbit/s demodulation digital coherent detection digital signal processing free-running unmodulated laser frequency 100 GHz frequency 75 GHz to 110 GHz heterodyne detection heterodyne mixing light coherence microwave photonics millimeter-wave wireless signal millimetre wave generation optical baseband quadrature phase-shift keying signal optical communication equipment optical frequency conversion optical heterodyne generation optical information processing optical links optical pulse generation quadrature phase shift keying radio links radio-over-fibre wireless communication wireless signal demodulation wireless-over-fiber links
