Exploiting Tasks, Structures, and AI in Digital Communications Receivers

שלחו לחבר
Nir Shlezinger
BIU Engineering Building 1103, Room #329

The broad range of demands which next generation communications systems are required to meet, spanning from increased rates to efficient power consumption, cannot be satisfied by conventional architectures. These requirements give rise to a multitude of new challenges in modern communications and signal processing systems. In this talk we focus on two fundamental aspects of digital communications receivers – signal acquisition and symbol detection – discussing methods to improve their performance and reliability. For signal acquisition, we show how analog-to-digital convertors can be designed in light of the overall system task, achieving optimal-approaching performance while utilizing efficient bit-constrained samplers. Then, we discuss how recent advances in machine learning can be exploited for symbol detection, a task which is typically addressed using channel-model-based methods, such as the Viterbi algorithm and interference cancellation methods. We present a new framework for combining artificial intelligence and model-based algorithms, allowing the latter to be implemented in a data-driven manner. The resulting architectures are capable of approaching the established performance of model-based algorithms, while being invariant of the underlying statistical model, and learning it from a small amount of training samples.


I am a postdoctoral researcher in the Signal Acquisition Modeling and Processing Lab, Weizmann Institute of Science. Before that I was a postdoctoral researcher in the Technion, Israel Institute of Technology. I received my B.Sc., M.Sc., and Ph.D. degrees in 2011, 2013, and 2017, respectively, from Ben-Gurion University, Israel, all in Electrical and Computer Engineering, and worked as an R&D engineer at Yitran Communications from 2009 to 2013. My research interests are on the intersection of communications, signal processing, information theory, and machine learning.