Zhou, Zichuan;
Kassem, Amany;
Seddon, James;
Sillekens, Eric;
Darwazeh, Izzat;
Bayvel, Polina;
Liu, Zhixin;
(2024)
938 Gb/s, 5-150 GHz Ultra-Wideband Transmission Over the Air Using Combined Electronic and Photonic-Assisted Signal Generation.
Journal of Lightwave Technology
10.1109/jlt.2024.3446827.
(In press).
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Abstract
The next-generation radio access network (RAN) requires high speed wireless transmission between base stations exceeding ≥ 100 Gb/s to connect access points and hubs. This has motivated research exploring how to fully utilize wireless spectrum from sub-6GHz to millimeter (mm) waveband (e.g. Dband up to 170 GHz) for data transmission, using either allelectronic or optoelectronic approaches. However, to date, allelectronic and optoelectronic methods have been used separately due to the challenge of generating broad-band signals with synchronized carrier frequencies. Here, we demonstrate an ultrawide 145 GHz bandwidth wireless transmission of orthogonal frequency-division multiplexing (OFDM) signals over the air, covering 5-150 GHz frequency region. This is achieved by combining the merits of high-speed electronics and microwave photonics technologies. Specifically, the signals over 5-75 GHz are generated using high speed digital-to-analog converters. The high frequency mm-wave band signals, including W-band (75-110 GHz) and D-band (110-150 GHz) signals, are generated by mixing optically modulated signals with frequency-locked lasers on highspeed photodiodes. By frequency-locking two pairs of narrow linewidth lasers and referring to a common quartz oscillator, we generated W-band and D-band signals with stable carrier frequency and reduced phase noise compared to free-running lasers, maximizing the use of spectrum. By using OFDM format and bit loading, we achieve 938 Gb/s transmission data rate with less than 300 MHz gap between different RF and mm-wave bands.
| Type: | Article |
|---|---|
| Title: | 938 Gb/s, 5-150 GHz Ultra-Wideband Transmission Over the Air Using Combined Electronic and Photonic-Assisted Signal Generation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/jlt.2024.3446827 |
| Publisher version: | http://dx.doi.org/10.1109/jlt.2024.3446827 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Radio access network, Laser frequency locking, Mm-wave transmission, OFDM, Multiband wireless transmission |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10196331 |
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