• 994 Citations
  • 13 h-Index
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Personal profile

Research Interests

Photonics; Embedded system; Signal processing; Communication systems


Dr. Rajbhandari joined Coventry University in November 2015 and is currently working as a Lecturer in School of computing Engineering and Maths. He obtained his bachelor’s degree in Electronics and Communication Engineering from Institute of Engineering, Pulchowk Campus (Tribhuvan University), Nepal in 2004. He obtained an MSc in Optoelectronic and Communication Systems with Distinction in 2006 from Northumbria University and was awarded the P O Byrne prize for the most innovative project. He then joined the Optical Communications Research Lab (OCRG) at Northumbria University as a PhD candidate and was awarded a PhD degree in 2010.He then worked at Northumbria University as a senior research assistant (Dec. 2009-Aug. 2012) and research fellow (Sep. 2012- Dec. 2012). He joined the University of Oxford as a posts-doctorate Research assistant in Dec. 2012 and worked on EPSRC's Ultra-parallel visible light communications (UP-VLC) project which was a collaboration between five UK universities.

Dr. Rajbhandari has published more than 100 scholarly articles in the area of optical communications and is a co-author of a book on “Optical Wireless Communications – Systems and Channel Modelling with Matlab (2012). He was invited speaker in IEICE Information and Communication Technology Forum 2015 at Manchester. He has also served as a local organizing committee member for CSNDSP2010, publication chair for NOC/OC and I 2011 and proceeding editor for EFEA 2012 and NOC/OC and I 2011 as well as reviewer for several leading publications including the IEEE, OSA and IET journals. His research interests lie in the area of optical wireless communications, modulation techniques, equalization, artificial intelligence and wavelet transforms. He is a member of IEEE and an associate member of the Institute of Physics.


  • Optical communication
  • Visible light communications
  • Channel modelling
  • Modulation schemes
  • MIMO (imaging and non-imaging)
  • Optics design
  • Organic devices
  • Tracking and positioning
• Optical wireless communication/free space optics - Channel modelling - Modulation schemes - Atmospheric effect and mitigation - Spatial and angular diversity schemes • Hybrid FSO/RF system • Signal processing and equalisation • Artificial neural network • Biomedical signal processing • Error control code

Areas of Expertise:

  • Visible light communications / Optical wireless communication
  • Photonics
  • Digital signal processing
  • Artificial neural network
  • Hybrid RF/FSO system
  • Optoelectronics
  • Analogue and Digital Electronics

Fingerprint Fingerprint is based on mining the text of the person's scientific documents to create an index of weighted terms, which defines the key subjects of each individual researcher.

optical communication Physics & Astronomy
light emitting diodes Physics & Astronomy
Light emitting diodes Engineering & Materials Science
Communication systems Engineering & Materials Science
Modulation Engineering & Materials Science
Orthogonal frequency division multiplexing Engineering & Materials Science
gallium nitrides Physics & Astronomy
Gallium nitride Engineering & Materials Science

Network Recent external collaboration on country level. Dive into details by clicking on the dots.

Research Output 2014 2018

5 Citations

A comparison of APD and SPAD based receivers for visible light communications

Zhang, L., Chitnis, D., Chun, H., Rajbhandari, S., Faulkner , . G., O'Brien, D. C. & Collins, S. 28 Feb 2018 In : Journal of Lightwave Technology. 36, 12, p. 2435-2442 8 p.

Research output: Contribution to journalArticle

Open Access
optical communication

Flexible Glass Hybridized Colloidal Quantum Dots for Gb/s Visible Light Communications

Foucher, C., Sufyan, M. I., Guilhabert, B. J. E., Videv, S., Rajbhandari, S., Diaz, A. G., Chun, H., Vithanage, D. A., Turnbull, G. A., Samuel, I. D. W., Faulkner, G., O’Brien, D. C., Haas, H., Laurand, N. & Dawson, M. D. 21 Feb 2018 In : IEEE Photonics Journal. 10, 1, 12 p., 2200211

Research output: Contribution to journalArticle

Open Access
optical communication
light emitting diodes
quantum dots
3 Citations

Performance comparison of equalization techniques for SI-POF multi-gigabit communication with PAM-M and device non-linearities

Osahon, I. N., Rajbhandari, S. & Popoola, W. O. 28 Feb 2018 In : Journal of Lightwave Technology. 36, 11, p. 2301-2308 8 p.

Research output: Contribution to journalArticle

Open Access
pulse amplitude modulation
plastic fibers
self organizing systems
optical fibers
6 Citations

A Multi-Gigabit/sec Integrated Multiple Input Multiple Output VLC Demonstrator

Rajbhandari, S., Jalajakumari, A. V. N., Chun, H., Faulkner, G., Cameron, K., Henderson, R., Tsonev, D., Haas, H., Xie, E., McKendry, J. J. D., Herrnsdorf, J., Ferreira, R., Gu, E., Dawson, M. D. & O’Brien, D. 17 Apr 2017 In : Journal of Lightwave Technology. 6 p.

Research output: Contribution to journalArticle

Open Access
MIMO (control systems)
optical communication
light emitting diodes
gallium nitrides
52 Citations

A review of gallium nitride LEDs for multi-gigabit-per-second visible light data communications

Rajbhandari, S., McKendry, J. J. D., Herrnsdorf, J., Chun, H., Faulkner, G., Haas, H., Watson, I. M., O'Brien, D. & Dawson, M. D. 4 Jan 2017 In : Semiconductor Science and Technology. 32, 2, 023001

Research output: Contribution to journalReview article

Open Access
Gallium nitride
gallium nitrides
Light emitting diodes
optical communication
light emitting diodes

Activities 2015 2015

  • 1 Participation in conference

IEICE Information and Communication Technology Forum 2015

Rajbhandari, S. (Speaker)
4 Jun 2015

Activity: Participation in conference