Nazli Khanbeigi of Concordia University

 Abstract. Advanced Television Systems Committee (ATSC) has issued ATSC 3.0 as the standard for the next-generation of Digital Terrestrial Television (DTT) broadcasting. ATSC 3.0 introduces several new features including Layered Division Multiplexing (LDM) that is implemented along with a wide range of modulation formats and error correcting code rates. ATSC 3.0 supports the legacy Single Frequency Networks (SFN), where the Guard Interval (GI) is considered to overcome the multipath as well as the asynchronous reception from different transmitters. Considering the huge distances between the DTT broadcasters, the GI overhead could be comparable to the data size, making the control/data ratio unfavorable. This work proposes a novel formation of the channel matrix that jointly includes the asynchronous channel’s cross correlations for further joint detection of the signals at the receiver to the purpose of increasing the spectral efficiency while avoiding hectic guard intervals or directional antennas. We investigate asynchronous reception of signals from multiple coordinated broadcasters in SFN with no GI. The capacity region is derived in an information theoretic framework, and an accurate mathematical channel model for the asynchronous SFN is proposed. We show that by exploiting the asynchronous channels’ memory and correlation, the spectral efficiency can exceed that of the non-coordinating schemes, provided that the proper receiver is used. Analyzing the receivers, we show that while interference cancelation (IC) receiver is sensitive to asynchronous reception, the performance elevates in the iterative joint detection and decoding (IJDD) receiver. We use a low-complexity detection scheme minimizing the mean square error (MMSE) and adopt it to our asynchronous channel model. Our extensive simulations validate that the proposed cooperative scheme provides a considerable boost in the coverage and channel reliability, while increasing the spectral and power efficiency.

Biography:

 Nazli Khan Beigi earned her B.S. degree from Sharif University of Technology, Tehran, Iran, in 2003, the M.S. degree from Iran University of Science and Technology, Tehran, Iran, in 2005, and the Ph.D. from Concordia University, Montreal, Canada, in 2020, all in electrical engineering. Since 2018, she is with Interdigital Company, Montreal, Canada, as the senior engineer in the R&I Wireless and Networking Lab. Her current research interests lie in the area of wireless communications RAN and includes coding, information theory, broadcasting, MIMO, NOMA, and their applications in the future radio access technologies.

David H Layer of National Association of Broadcasters

This session will focus on radio technical work being supported by NAB in 2021. For radio, work being done by the National Radio Systems Committee (NRSC, co-sponsored by NAB and the Consumer Technology Association) as well as the NAB’s own Radio Technology Committee, which has two active subgroups focusing on hybrid radio and next-gen HD Radio architecture, will be featured. Also included will be a short tour of the new NAB building including the new Technology Lab and Tech Showcase.

Biography:

David has been with NAB since 1995 focusing primarily on the radio technology and standards setting area.David’s principal responsibilities include serving as a project manager for technology projects being conducted by PILOT (formerly NAB Labs), and as principal administrator of the NAB Radio Technology Committee, a group of technical executives from NAB member companies that advises NAB on technology development and technical regulatory matters. Currently, David is the chairman of the RadioDNS Steering Board and is the NAB representative to the RDS Forum. He is also vice-chair of the North American Broadcasters Association (NABA) Radio Committee. He is a senior member of the IEEE and a member of the Association of Federal Communications Consulting Engineers (AFCCE). Currently David is one of the BTS Distinguished Lecturers and has given lectures focusing on digital and hybrid radio to BTS chapters in Montreal, San Diego, Buenos Aires, Montevideo, Bilbao, Beijing, Shanghai, and Belgrade.

David was the recipient of Radio World’s 2015 Excellence in Engineering Award and was recognized by Radio Ink Magazine in November 2010 as among the top ten best engineers in radio. In 2014 David received the Consumer Electronics Association Technology Leadership Award. The IEEE BTS awarded David the Matti Siukola Memorial Award for the Best Paper of both the 2014 and 2018 IEEE Broadcast Symposia.