Title: Capacity of General Large-Scale MIMO Channels
时间：2025年8月7日（周四）上午 11:00-12:00
地点：无线谷1306会议室
Abstract:
In this talk, we present recent advances in understanding the capacity of general large-scale MIMO systems under both peak and average power constraints. Our results reveal that the asymptotic capacity of large scale MIMO systems is completely captured by the Fisher information through a surrogate that we call Jeffreys factor, an equivalent of the signal to noise ratio in conventional Gaussian noise channels. Our findings are broadly applicable across a wide range of practical scenarios, illustrated through diverse examples including output clipping, phase noise, low-resolution ADCs, imperfect channel state information (CSI), and optical Poisson channels. We also show how the Jeffreys’ prior can help design finite input constellations for general large-scale MIMO channels.
Bio:
Sheng Yang received the B.E. degree in electrical engineering from Jiaotong University, Shanghai, China, in 2001, and both the engineer degree and the M.Sc. degree in electrical engineering from Telecom Paris, France, in 2004, respectively. In 2007, he obtained his Ph.D. from Université de Pierre et Marie Curie (Paris VI). From October 2007 to November 2008, he was with Motorola Research Center in Gif-sur-Yvette, France, as a senior staff research engineer. Since December 2008, he has joined CentraleSupélec, Paris-Saclay University, where he is currently a full professor. He has also hold visiting professorships in the University of Hong Kong (2015, 2016) and the Hong Kong University of Science and Technology (2023, 2024). He received the 2015 IEEE ComSoc Young Researcher Award for the Europe, Middle East, and Africa Region (EMEA). He was an associate editor of the IEEE transactions on wireless communications from 2015 to 2020. He is currently an associate editor of the IEEE transactions on information theory.
