# Beyond 5G RIS mmWave Systems: Where Communication and Localization Meet

arXiv: https://arxiv.org/abs/2109.07729 · HTML: https://mlsanity.com/paper/2109.07729/

## Key facts

- No citing papers in the map yet (data through 14 Oct 2026).
- Builds on 29 of its 58 references that are in the map.
- First posted on arXiv 16 Sep 2021.

## Builds on (most cited first, 29 of 29)

- [A Vision of 6G Wireless Systems: Applications, Trends, Technologies, and Open Research Problems](https://mlsanity.com/paper/1902.10265/) (2019)
- [Integrated Sensing and Communications: Towards Dual-functional Wireless Networks for 6G and Beyond](https://mlsanity.com/paper/2108.07165/) (2021)
- [Intelligent Reflecting Surface Enhanced Wireless Network via Joint Active and Passive Beamforming](https://mlsanity.com/paper/1810.03961/) (2018)
- [Wireless Communications Through Reconfigurable Intelligent Surfaces](https://mlsanity.com/paper/1906.09490/) (2019)
- [Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How it Works, State of Research, and Road Ahead](https://mlsanity.com/paper/2004.09352/) (2020)
- [Federated Learning for Channel Estimation in Conventional and RIS-Assisted Massive MIMO](https://mlsanity.com/paper/2008.10846/) (2020)
- [Holographic MIMO Surfaces for 6G Wireless Networks: Opportunities, Challenges, and Trends](https://mlsanity.com/paper/1911.12296/) (2019)
- [Deep Channel Learning For Large Intelligent Surfaces Aided mm-Wave Massive MIMO Systems](https://mlsanity.com/paper/2001.11085/) (2020)
- [Intelligent Reflecting Surface: Practical Phase Shift Model and Beamforming Optimization](https://mlsanity.com/paper/1907.06002/) (2019)
- [Radio Localization and Mapping with Reconfigurable Intelligent Surfaces](https://mlsanity.com/paper/1912.09401/) (2019)
- [Channel Estimation for RIS-Aided mmWave MIMO Systems via Atomic Norm Minimization](https://mlsanity.com/paper/2007.08158/) (2020)
- [Terahertz Massive MIMO with Holographic Reconfigurable Intelligent Surfaces](https://mlsanity.com/paper/2009.10963/) (2020)
- [Reconfigurable Intelligent Surfaces vs. Relaying: Differences, Similarities, and Performance Comparison](https://mlsanity.com/paper/1908.08747/) (2019)
- [Deep Learning-based Phase Reconfiguration for Intelligent Reflecting Surfaces](https://mlsanity.com/paper/2009.13988/) (2020)
- [Near-field Localization with a Reconfigurable Intelligent Surface Acting as Lens](https://mlsanity.com/paper/2010.05617/) (2020)
- [Power Scaling Laws and Near-Field Behaviors of Massive MIMO and Intelligent Reflecting Surfaces](https://mlsanity.com/paper/2002.04960/) (2020)
- [Deep Learning for THz Drones with Flying Intelligent Surfaces: Beam and Handoff Prediction](https://mlsanity.com/paper/2102.11222/) (2021)
- [Learning to Estimate RIS-Aided mmWave Channels](https://mlsanity.com/paper/2107.12631/) (2021)
- [Leveraging Location Information for RIS-aided mmWave MIMO Communications](https://mlsanity.com/paper/2010.14163/) (2020)
- [SISO RIS-Enabled Joint 3D Downlink Localization and Synchronization](https://mlsanity.com/paper/2011.02391/) (2020)
- [Fast Beam Training and Alignment for IRS-Assisted Millimeter Wave/Terahertz Systems](https://mlsanity.com/paper/2103.05812/) (2021)
- [Joint Communication and Radar Sensing with Reconfigurable Intelligent Surfaces](https://mlsanity.com/paper/2105.01966/) (2021)
- [Reconfigurable Intelligent Surfaces based RF Sensing: Design, Optimization, and Implementation](https://mlsanity.com/paper/1912.09198/) (2019)
- [A General Framework for RIS-Aided mmWave Communication Networks: Channel Estimation and Mobile User Tracking](https://mlsanity.com/paper/2009.01180/) (2020)
- [Passive RIS vs.Hybrid RIS: A Comparative Study on Channel Estimation](https://mlsanity.com/paper/2010.06981/) (2020)
- [Foundations of MIMO Radar Detection Aided by Reconfigurable Intelligent Surfaces](https://mlsanity.com/paper/2105.09250/) (2021)
- [Integrated Communication and Localization in mmWave Systems](https://mlsanity.com/paper/2009.13135/) (2020)
- [Reconfigurable Intelligent Surfaces for N-LOS Radar Surveillance](https://mlsanity.com/paper/2104.00456/) (2021)
- [Two-Timescale Design for Reconfigurable Intelligent Surface-Aided Massive MIMO Systems with Imperfect CSI](https://mlsanity.com/paper/2108.07622/) (2021)

## Abstract (arXiv)

Upcoming beyond fifth generation (5G) communications systems aim at further enhancing key performance indicators and fully supporting brand new use cases by embracing emerging techniques, e.g., reconfigurable intelligent surface (RIS), integrated communication, localization, and sensing, and mmWave/THz communications. The wireless intelligence empowered by state-of-the-art artificial intelligence techniques has been widely considered at the transceivers, and now the paradigm is deemed to be shifted to the smart control of radio propagation environment by virtue of RISs. In this article, we argue that to harness the full potential of RISs, localization and communication must be tightly coupled. This is in sharp contrast to 5G and earlier generations, where localization was a minor additional service. To support this, we first introduce the fundamentals of RIS mmWave channel modeling, followed by RIS channel state information acquisition and link establishment. Then, we deal with the connection between localization and communications, from a separate and joint perspective.