+44 (0)24 7671 8970
More publications     •     Advertise with us     •     Contact us
News Article

KAUST Team Reports Record-breaking UV LED Comms


LED-based communication system achieves line-of-sight data rates up to 71 Mbit/s using 8-QAM-OFDM technique

For free-space optical wireless communications, UV-light-based systems have many inherent advantages such as low background solar radiation and low device dark noise especially for the UV-C/B (100-280nm/280nm-315nm) band.

In addition, atmospheric scattering of UV radiation contributes to less restrictive requirements for pointing, acquisition, and tracking (PAT), making the technology suitable for diffuse line-of-sight (LOS) as well as non-line-of-sight (NLOS) communications.

Now researchers from King Abdullah University of Science and Technology (KAUST), led by Boon S. Ooi, have reported a record-breaking high-speed near-solar-blind UV communication system with a data rate up to 71 Mbit/s in a LOS link, and 23.6 Mbit/s at a 12-degree diffuse-LOS link.

They have achieved this high data rate by using orthogonal frequency-division multiplexing (OFDM) modulation technique and a 294-nm UVB-LED.

The figure below shows the testbed for the LED based UV communication measurement, comprising an Agilent 81150A Arbitrary Waveform Generator (AWG), a Tektronix DPO70404C Digital Phosphor Oscilloscope (DPO), a UVB-LED, Thorlabs LA4052-UV plano convex lens, as well as a Thorlabs APD 430A2/M avalanche photodetector.

The measured bit-error rate (BER) are 2.8 and 2.4 for LOS link and diffuse-LOS link, respectively, which are well below the forward error correction (FEC) criterion (3.8). The demonstration of an 8-QAMs OFDM near-solar-blind UV communication system with the highest data rate ever reported paves the way towards further development of UV NLOS communication link.

'71-Mbit/s ultraviolet-B LED communication link based on 8-QAM-OFDM modulation', by Xiaobin Sun et al; Optics Express, Vol. 25, No. 19, 18 Sep 2017.

CS International to return to Brussels – bigger and better than ever!

The leading global compound semiconductor conference and exhibition will once again bring together key players from across the value chain for two-days of strategic technical sessions, dynamic talks and unrivalled networking opportunities.

Join us face-to-face between 28th – 29th June 2022

  • View the agenda.
  • 3 for the price of 1. Register your place and gain complementary access to TWO FURTHER industry leading conferences: PIC International and SSI International.
  • Email info@csinternational.net  or call +44 (0)24 7671 8970 for more details.

*90% of exhibition space has gone - book your booth before it’s too late!


Search the news archive

To close this popup you can press escape or click the close icon.
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.

Please subscribe me to:


You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in: