SUNY Polytechnic Institute (SUNY Poly) Assistant Professor of Electrical and Computer Engineering Dr. Priyangshu Sen and Assistant Professor of Electrical and Computer Engineering Dr. Arjun Singh recently published several papers on communication topics, collaboratively and independently.

Papers they published together
In "Impact of the Antenna on the Sub-Terahertz Indoor Channel Characteristics: An Experimental Approach," the duo showed that an antenna agonistic channel model is crucial for sub-THz and THz frequencies. The proposed channel model represents a substantial departure from existing models. As a result, this model has the potential to provide more accurate and reliable results than its predecessors, and could have significant implications for the field, overall. 

In a present study titled "A Spread Spectrum Modulation Technique for THz Communications in the Presence of Phase Noise," the two professors introduce an innovative modulation scheme that exhibits resilience to long-term correlated phase noise. The proposed modulation methodology relies on a code-division-based scheme, which effectively diminishes the impact of phase noise by enhancing the link quality. This will pave the way for next-generation waveform design for THz band systems.

And finally, in their study titled, "Wavefront Engineering With Reconfigurable Intelligent Surfaces for Improved Sensing Capabilities in the THz Band," the pair demonstrates how wavefronts that are precisely engineered within the near field can offer enhanced sensing capabilities. They specifically emphasized how Bessel beams can provide greater depth of focus, thereby improving the resolution capability of THz-band sensing.

Papers published independently
Dr. Sen, working in collaboration with the Air Force Research Laboratory and Northeastern University, conducted a study titled "Modulations for Terahertz Band Communications: Joint Analysis of Phase Noise Impact and PAPR Effects." In this study, they analyzed various modulation schemes considering the unique properties of THz channel and hardware devices. Dr. Sen notes that the study is significant and timely, as selecting the optimal modulation for sub-terahertz and Terahertz is of utmost importance. 

Dr. Singh recently published a paper with peers called, “Wavefront Hopping: An Enabler for Reliable and Secure Near Field Terahertz Communications in 6G and Beyond,” which appeared in a special issue of the IEEE Wireless Communications Magazine in February. This work explores the novel concept of wavefront hopping as an opportunity to leverage the significant near field of future THz communication systems in implementing physical layer security, interference mitigation, blockage management, and other dynamic physical layer tasks through exotic beam configuration.