Wireless Communications Channel Measurements and Models

Wireless Communications Channel Measurements and Models: 
Promising opportunities for new applications at Terahertz Frequencies, and deep learning for physical layer wireless communication networks and sensing

Abstract: 

This talk discusses radio propagation channel characteristics and modeling approaches from below 6 GHz to the millimeter wave and THz spectrum bands, with a focus on recent discoveries about the wireless channel above the millimeter wave spectrum. From recent knowledge of the channel, new applications and AI/ML opportunities become clear.  The talk highlights advances in modeling the spatial and temporal nature of radio channels, including the impact of antenna patterns, and received signal envelopes of received signals, thereby offering insights into phenomena that can be used in learning models for artificial intelligence (AI) to predict signal behavior in real-world channels. Special emphasis is given to the relatively new Two-Wave With Diffuse Power (TWDP) distribution that encompasses Raleigh and Rician fading as special cases, and repeatable measured phenomenon of diffraction effects when a receiver encounters an object that physically begins to block a radio path. New approaches that learn the directions of arrivals and the extent of multipath from simple narrowband envelope measurements, and how to optimize and learn channel behaviors from ray tracing are also presented, thus offering insights into promising ML/AI approaches to physical layer prediction and learning.

Speaker Bio:

Distinguished speaker Theodore (Ted) S. Rappaport (tsr@nyu.edu) is the David Lee/Ernst Weber Professor in Electrical and Computer Engineering at New York University (NYU) and is a professor in the NYU Courant Computer Science Dept. and the NYU School of Medicine. He founded the NYU WIRELESS research center in 2012 and the wireless research centers at the University of Texas Austin (WNCG) and Virginia Tech (MPRG) earlier in his career. His work has provided fundamental knowledge for wireless system design and radio propagation in wireless channels for the first IEEE 802.11 Wi-Fi standard, the first U.S. digital TDMA and CDMA standards, the first public Wi-Fi hotspots, and proved the viability of millimeter wave, and then Terahertz frequencies for 5G, 6G, and beyond. He founded two businesses that were sold to publicly traded companies – TSR Technologies, Inc. (cellular/paging intercept and E911) and Wireless Valley Communications, Inc. (site-specific wireless network design, deployment, and management), and was an advisor to Straight Path Communications which sold 5G millimeter wave spectrum to Verizon. He holds more than 100 patents and is a licensed Professional Engineer, a member of the Wireless Hall of Fame, the US National Academy of Engineering, a Fellow of the US National Academy of Inventors, and a life member of the American Radio Relay League. His amateur radio call sign is N9NB.

Location:

Hudson Hall 125
Refreshments will be provided at 1:30 PM.

Zoom:

Zoom Meeting ID: 875 466 3361
Password: 111023

Host:

Yiran Chen