1.3k citations · 1.5k across the 15 of their papers we have counts for
17 papers
Communication-Oriented Channel Characteristics of Holographic Curvature-Reconfigurable Apertures
Hang Lin, Shu Sun, Hangsong Yan +1
This letter investigates the joint impact of array curvature and mutual coupling (MC) on holographic curvature-reconfigurable apertures. An analytical framework is developed to cha…
Spectral Approximation and Ergodic-Capacity Convergence of HMIMO Channels under Spatial-Wavenumber Domain Mismatch
Hangsong Yan, Hong Yang, Shu Sun
We establish quantitative results on finite-dimensional spectral approximation and ergodic-capacity convergence for continuous Holographic Multiple-Input Multiple-Output (HMIMO) ch…
Computational and Effective Degrees of Freedom for Spatially Stationary HMIMO Channel Modeling
Hangsong Yan, Hong Yang, Shu Sun
This paper establishes a comprehensive theoretical framework for the continuous-to-discrete modeling of spatially stationary holographic MIMO (HMIMO) channels utilizing the Nystrom…
Robust Multi-Stream Massive MIMO Satellite Systems Based on Statistical CSI
Hangsong Yan, Alexei Ashikhmin, Hong Yang +2
This paper investigates multi-stream downlink precoding for massive multiple-input multiple-output low-Earthorbit satellite (SAT) communication systems. We adopt a delay and Dopple…
Spatial Correlation and Degrees of Freedom in Arched HMIMO Arrays: A Closed-Form Analysis
Liuxun Xue, Shu Sun, Hangsong Yan
This paper presents a closed-form analysis of spatial correlation and degrees of freedom (DoF) for arched holographic multiple-input multiple-output (HMIMO) arrays, which can be vi…
Deep Learning-Based Beamforming Design Using Target Beam Patterns
Hongpu Zhang, Shu Sun, Hangsong Yan +1
This paper proposes a deep learning-based beamforming design framework that directly maps a target beam pattern to optimal beamforming vectors across multiple antenna array archite…
Channel Knowledge Maps for 6G Wireless Networks: Construction, Applications, and Future Challenges
Xingchen Liu, Shu Sun, Meixia Tao +2
The advent of 6G wireless networks promises unprecedented connectivity, supporting ultra-high data rates, low latency, and massive device connectivity. However, these ambitious goa…
Small-Scale Spatial-Temporal Correlation and Degrees of Freedom for Reconfigurable Intelligent Surfaces
Shu Sun, Hangsong Yan
The reconfigurable intelligent surface (RIS) is an emerging promising candidate technology for future wireless networks, where the element spacing is usually of sub-wavelength. Onl…
Can Massive MIMO Support URLLC?
Hangsong Yan, Alexei Ashikhmin, Hong Yang
We investigate the feasibility of using Massive MIMO to support URLLC in both coherence interval based and 3GPP compliant pilot settings. We consider grant-free uplink transmission…
Optimally Supporting IoT with Cell-Free Massive MIMO
Hangsong Yan, Alexei Ashikhmin, Hong Yang
We study internet of things (IoT) systems supported by cell-free (CF) massive MIMO (mMIMO) with optimal linear channel estimation. For the uplink, we consider optimal linear MIMO r…
Channel Estimation for Reconfigurable Intelligent Surface-Assisted Wireless Communications Considering Doppler Effect
Shu Sun, Hangsong Yan
In wireless systems aided by reconfigurable intelligent surfaces (RISs), channel state information plays a pivotal role in achieving the performance gain of RISs. Mobility renders…
A Scalable and Energy Efficient IoT System Supported by Cell-Free Massive MIMO
Hangsong Yan, Alexei Ashikhmin, Hong Yang
An IoT (Internet of things) system supports a massive number of IoT devices wirelessly. We show how to use Cell-Free Massive MIMO (multiple-input and multiple-output) to provide a…
Joint MMSE Transceiver Design for Downlink Heterogeneous Network
Zhannan Li, Hangsong Yan, I-Tai Lu
In this paper, we propose a minimum mean square error (MMSE) based transceiver design scheme for a downlink multiple-input multiple-output (MIMO) two-tier heterogeneous network wit…
Small-Scale, Local Area, and Transitional Millimeter Wave Propagation for 5G Communications
Theodore S. Rappaport, George R. MacCartney, Shu Sun +2
This paper studies radio propagation mechanisms that impact handoffs, air interface design, beam steering, and MIMO for 5G mobile communication systems. Knife edge diffraction (KED…
Millimeter Wave Small-Scale Spatial Statistics in an Urban Microcell Scenario
Shu Sun, Hangsong Yan, George R. MacCartney +1
This paper presents outdoor wideband small-scale spatial fading and autocorrelation measurements and results in the 73 GHz millimeter-wave (mmWave) band conducted in downtown Brook…
A Flexible Wideband Millimeter-Wave Channel Sounder with Local Area and NLOS to LOS Transition Measurements
George R. MacCartney, Hangsong Yan, Shu Sun +1
This paper presents a millimeter-wave (mmWave) wideband sliding correlator channel sounder with flexibility to operate at various transmission rates. The channel sounder can transm…
Millimeter Wave Wireless Communications: New Results for Rural Connectivity
George R. MacCartney, Shu Sun, Theodore S. Rappaport +5
This paper shows the remarkable distances that can be achieved using millimeter wave communications, and presents a new rural macrocell (RMa) path loss model for millimeter wave fr…