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PEACH: Proactive and Environment-Aware Channel State Information Prediction with Depth Images

Published: 02 March 2023 Publication History

Abstract

Up-to-date and accurate prediction of Channel State Information (CSI) is of paramount importance in Ultra-Reliable Low-Latency Communications (URLLC), specifically in dynamic environments where unpredictable mobility is inherent. CSI can be meticulously tracked by means of frequent pilot transmissions, which on the downside lead to an increase in metadata (overhead signaling) and latency, which are both detrimental for URLLC. To overcome these issues, in this paper, we take a fundamentally different approach and propose PEACH, a machine learning system which utilizes environmental information with depth images to predict CSI amplitude in beyond 5G systems, without requiring metadata radio resources, such as pilot overheads or any feedback mechanism. PEACH exploits depth images by employing a convolutional neural network to predict the current and the next 100 ms CSI amplitudes. The proposed system is experimentally validated with extensive measurements conducted in an indoor environment, involving two static receivers and two transmitters, one of which is placed on top of a mobile robot. We prove that environmental information can be instrumental towards proactive CSI amplitude acquisition of both static and mobile users on base stations, while providing an almost similar performance as pilot-based methods, and completely avoiding the dependency on feedback and pilot transmission for both downlink and uplink CSI information. Furthermore, compared to demodulation reference signal based traditional pilot estimation in ideal conditions without interference, our experimental results show that PEACH yields the same performance in terms of average bit error rate when channel conditions are poor (using low order modulation), while not being much worse when using higher modulation orders, like 16-QAM or 64-QAM. More importantly, in the realistic cases with interference taken into account, our experiments demonstrate considerable improvements introduced by PEACH in terms of normalized mean square error of CSI amplitude estimation, up to 6 dB, when compared to traditional approaches.

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  • (2024)LiDAR Technology For Future Wireless Networks: Use Cases and Challenges2024 IEEE 30th International Conference on Telecommunications (ICT)10.1109/ICT62760.2024.10606134(1-5)Online publication date: 24-Jun-2024
  • (2023)Demo: Remote Robot Control with Haptic Feedback over the Munich 5G Research Hub Testbed2023 IEEE 24th International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)10.1109/WoWMoM57956.2023.00059(349-351)Online publication date: Jun-2023

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cover image Proceedings of the ACM on Measurement and Analysis of Computing Systems
Proceedings of the ACM on Measurement and Analysis of Computing Systems  Volume 7, Issue 1
POMACS
March 2023
749 pages
EISSN:2476-1249
DOI:10.1145/3586099
Issue’s Table of Contents
This work is licensed under a Creative Commons Attribution International 4.0 License.

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Published: 02 March 2023
Published in POMACS Volume 7, Issue 1

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Author Tags

  1. 5G new radio
  2. URLLC
  3. channel state information
  4. convolutional neural network
  5. dataset
  6. environment-aware wireless communications
  7. measurement
  8. proactive prediction
  9. wireless channel estimation

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  • (2024)LiDAR Technology For Future Wireless Networks: Use Cases and Challenges2024 IEEE 30th International Conference on Telecommunications (ICT)10.1109/ICT62760.2024.10606134(1-5)Online publication date: 24-Jun-2024
  • (2023)Demo: Remote Robot Control with Haptic Feedback over the Munich 5G Research Hub Testbed2023 IEEE 24th International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM)10.1109/WoWMoM57956.2023.00059(349-351)Online publication date: Jun-2023

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