Information theory is the research discipline that establishes the fundamental limits for information transfer, storage, and processing. Major advances in wireless communications have often been a combination of information-theoretic predictions and engineering efforts that turn them into mainstream technology. Erik G. Larsson and Emil Björnson invited the information-theorist Giuseppe Caire, Professor at TU Berlin, to discuss how the discipline is shaping current and future wireless networks. The conversation first covers the journey from classical multiuser information theory to Massive MIMO technology in 5G. The rest of the episode goes through potential future developments that can be assessed through information theory: distributed MIMO, orthogonal time-frequency-space (OTFS) modulation, coded caching, reconfigurable intelligent surfaces, terahertz bands, and the use of ever larger numbers of antennas. The following papers are mentioned: “OTFS vs. OFDM in the Presence of Sparsity: A Fair Comparison” (https://doi.org/10.1109/TWC.2021.3129975) , “Joint Spatial Division and Multiplexing”(https://arxiv.org/pdf/1209.1402.pdf), and “Massive MIMO has Unlimited Capacity” (https://arxiv.org/pdf/1705.00538.pdf). Music: On the Verge by Joseph McDade. Visit Erik’s website https://liu.se/en/employee/erila39 and Emil’s website https://ebjornson.com/
20. Wireless Solutions for the Internet of Things (With Liesbet Van der Perre)
19. Future of Multi-Antenna Technology and Spectrum (With Thomas Marzetta)
18. Ever-Present Intelligent 6G Communications (With Magnus Frodigh)
17. Energy-Efficient Communications
16. 6G and the Physical Layer (with Angel Lozano)
15. Wireless for Machine Learning (with Carlo Fischione)
14. Q/A on MIMO, NOMA, and THz Communications
13. Distributed and Cell-Free Massive MIMO
12. Privacy and Security in Connectivity (with Panos Papadimitratos)
11. Non-Orthogonal Multiple Access
10. Reaching the Terabit/s Goal
9. Q/A on Reconfigurable Intelligent Surfaces
8. Analog versus Digital Beamforming (with Bengt Lindoff)
7. Machine Learning for Wireless
6. Q/A on Massive MIMO
5. Millimeter Wave Communication
4. Is Wireless Technology Secure?
3. Reconfigurable Intelligent Surfaces
2. Myths About Massive MIMO
1. Massive MIMO: Where Do We Stand?
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