As part of a joint research cooperation between researchers from Palestine Polytechnic University and King Fahd University of Petroleum and Minerals in the Kingdom of Saudi Arabia, a scientific paper was published in "Physical Communication" journal classified as "Q3" in the Web-of-Science index for the student: Doaa Salim, from the joint Master’s program in Mathematics at Palestine Polytechnic University, entitled “Reconfigurable intelligent surface (RIS) source decode-and-forward relaying network with interference” under the supervision of Dr. Munjed Samuh from the Department of Mathematics and Applied Physics at the University in research cooperation with Dr. Anas Salhab from the Electrical Engineering Department at King Fahd University of Petroleum and Minerals. In this paper, probabilistic science was used to build a mathematical model to analyze the performance of Artificial Intelligent Surfaces (RIS) in wireless communication networks with relays and channels interference.
The student Salim stressed the importance of employing applied mathematics and probabilistic science in the design and analysis of the performance of wireless communication systems, including modern technologies such as the technology of reconfigurable intelligent surfaces.
During the joint research cooperation , the researchers Smouh and Salhab were able to publish another scientific paper entitled "Accurate Performance Analysis of Reconfigurable Intelligent Surfaces over Rician Fading Channels” in the magazine "IEEE Wireless Communication Letters" classified as "Q1" within the "Web-of-Science" index. In this scientific paper, the researchers derived a new and accurate model of "RIS" technique over wireless channels that follow the mathematical distribution of Racian type. This distribution is suitable for representing wireless communication channels when there is a direct sight line between the transmitter and the receiver. This mathematical distribution is general and it includes other types of mathematical distributions as a special case, such as the Rayleigh distribution.
Dr. Samuh and Dr. Salhab stated that this joint research cooperation between the two universities is on a subject that is currently considered one of the most famous fields of scientific research in applied mathematics and wireless communications engineering, namely RIS technology. This technology is considered very effective in improving the performance of wireless communication systems by improving the spectrum and energy efficiency of these systems. Also, this technology is low in price and simple to install compared to other technologies currently present in wireless communications networks and systems. What distinguishes the "RIS" technology also is its ability to improve the characteristics of the communication channel between the transmitter and the receiver by compensating for the negative effect resulting from the phase shift caused by the channel in the transmitted signal, as this feature is very modern and advanced in terms of its ability to control the same communication channel. While all the technologies that were used in the past, have the ability only to improve the performance of communication systems by controlling the characteristics of the sender and receiver on the assumption that the characteristics of the communication channel cannot be controlled, and this was recently refuted by the "RIS" technology.
First paper link: https://www.sciencedirect.com/science/article/pii/S1874490721000707
Second paper link: https://ieeexplore.ieee.org