A Tutorial on Holographic MIMO Communications--Part I: Channel Modeling and Channel Estimation
arXiv:2305.15728 · doi:10.1109/LCOMM.2023.3278683
Abstract
By integrating a nearly infinite number of reconfigurable elements into a finite space, a spatially continuous array aperture is formed for holographic multiple-input multiple-output (HMIMO) communications. This three-part tutorial aims for providing an overview of the latest advances in HMIMO communications. As Part I of the tutorial, this letter first introduces the fundamental concept of HMIMO and reviews the recent progress in HMIMO channel modeling, followed by a suite of efficient channel estimation approaches. Finally, numerical results are provided for demonstrating the statistical consistency of the new HMIMO channel model advocated with conventional ones and evaluating the performance of the channel estimators. Parts II and III of the tutorial will delve into the performance analysis and holographic beamforming, and detail the interplay of HMIMO with emerging technologies.
arXiv comment15 pages, 3 figures, accepted by IEEE CL
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- On the Spectral Efficiency of Multi-user Holographic MIMO Uplink Transmission
- Breaking the Degrees-of-Freedom Limit of Holographic MIMO Communications: A 3-D Antenna Array Topology
- Physical Layer Security for Integrated Sensing and Communication: A Survey
- Bayes-Optimal Unsupervised Learning for Channel Estimation in Near-Field Holographic MIMO
- MMSE Channel Estimation in Large-Scale MIMO: Improved Robustness with Reduced Complexity
- Toward Beamfocusing-Aided Near-Field Communications: Research Advances, Potential, and Challenges
- Channel sensing for holographic interference surfaces based on the principle of interferometry
- Stacked Intelligent Metasurfaces-Based Electromagnetic Wave Domain Interference-Free Precoding