Optical Wireless Research Centre (OWRC)
At the optical wireless research centre, we are dedicated to pushing the boundaries of wireless communications technology. We strive to revolutionize the way data is transmitted, leveraging the power of light waves. Our interdisciplinary team of experts, including engineers, scientists and technologists, collaborate to conduct ground-breaking research and develop cutting-edge solutions to address the challenges faced by the optical wireless industry. With the focus on optical wireless communication systems, visible light communication, Li-Fi technology and optical wireless networking, we aim to drive innovation and create a future where fast, secure and efficient wireless communication is accessible to all. Our research aims to significantly impact various industries including telecommunication. Automotive, healthcare and smart cities.
Members
- Dr. S.M. Sajid
- Mr. Mohsin Yousuf
- Ms. Bushra Rashid
- Mr. Ahsan (PhD student)
- Ms. Hira Khalid (full-time RA)
Students (with significant contributions)
- Azka Chaudary
- Husnine Shabbir
- Muhammad Ali Umair
- Usman Arshad
- Hira Khalid
- M.Azhar Iqbal
- Saad Ahmed Minhas
- Sarim Suhail
Project
Title: Characterization of optical attenuation due to smog for ground-to-ground link
Abstract:
For the past few years, we have observed that the smog engulfs many parts of North Punjab to a very unhealthy level and causes low visibility. Smog is actually a mixture of smoke and fog which has a drastic effect on the outage of the FSO link. Now its need of the hour to study the effects of smog on optical link and how it’s different from that of fog. The research will be conducted to observe measurements for very particular Lahore smog and present an analysis on the link margins. Telecom industry demands for five nines performance which refers to availability of services for 99.999% of the time. Currently, no analytical data is present for smog attenuation and how close to five nines can this system work. This ongoing research is an extension of previously completed work at “Graz University of Technology Institute of Broadband communications” for fog environment. Now the idea is to analyze system based on the same parameters for Lahore’s smog and compare its results with the previous conducted research on fog. During experiment, two independent light emitting diodes (LED) based light sources are used, operating at 850nm and 1550nm. Light sources uses On-Off key modulation to driver electronic circuit. While measuring data for link availability, factors like temperature and visibility are considered.
Theses
-
Performance Analysis of RS Encoded PPM and Self Synchronized RS Encoded PPM in FSO (2021)
-
Comparison Analysis of log-normal, gamma-gamma and exponentiated Weibull fading model for Free Space Optical links (2020)
-
Optical Intensity Estimation in Free Space Optical Communications Using Array of Detectors (2019)
-
Visible Light Communications based positioning using Best Linear Unbiased Estimator (BLUE) (2019) Performance Analysis of Hybrid FSO / RF System (2018)
-
Micro-inverter Design for Islanded Micro-grid Applications (2018)
-
Implementation of Smart Grid Features using Power Line Communications (PLC). (2017)
-
Maximum Likelihood Estimator for Gamma-Gamma Turbulent Model (2017)
Publications
-
M.A. Umair, H. Khalid, S.M. Sajid, H.E. Nistazakis, “Gaussian-Shaped Free-Space Optical Beam Intensity Estimation in Detector Arrays,” MDPI Photonics, vol.10, no.8, August 2023.
-
H. Khalid, H.E. Nistazakis, S. Sheikh Muhammad, A.D. Raza, "Outage Performance Estimation of a MISO FSO System with OOK Signaling and Alamouti Type Space-Time Coding," MDPI Electronics, vol.11, no. 2, July 2022.
-
M. Salman Bashir and S. Sheikh Muhammad, “Time Synchronization in Photon Limited Deep Space Optical Communications,” IEEE Transactions on Aerospace & Electronic Systems, vol. 56, No.1, February 2020.
-
N. A. Androutsos, N. E. Nistazakis, H. Khalid, Muhammad SS, Tombras GS, "Serial DF Relayed FSO Links over Mixture Gamma Turbulence Channels and Nonzero Boresight Spatial Jitter," MDPI Computation, vol. 7, no. 3, 2019.
-
H. Khalid, S. Sheikh Muhammad, H.E. Nistazakis, and G.S. Tombras, “Performance Analysis of Hard-Switching Based Hybrid FSO/RF System over Turbulence Channels,” MDPI Computation, vol.7, no. 2, June 2019.
-
A. Choudhry and S. Sheikh Muhammad, “Performance Analysis of RS Encoded and Self-synchronizing RS Encoded PPM through a Gamma-Gamma Channel,” Optical Wireless Communication Conference (OWCC), Netherlands, November 2022.
-
M. Ghauri, S. Sheikh Muhammad and E. Leitgeb, “Analysis of Continental Fog Micro-physical Parameters: Effect of PSA on Optical Attenuation,” Proceedings at the 15th International Conference on Telecommunications (ConTEL), Graz, Austria, 3rd–5thJuly, 2019.