Full-Duplex Millimeter Wave MIMO Channel Estimation: A Neural Network Approach
Artikel i vetenskaplig tidskrift, 2024
Millimeter wave (mmWave) multiple-input-multi-output (MIMO) is now a reality with great potential for further improvement. We study full-duplex transmissions as an effective way to improve mmWave MIMO systems. Compared to half-duplex systems, full-duplex transmissions may offer higher data rates and lower latency. However, full-duplex transmission is hindered by self-interference (SI) at the receive antennas, and SI channel estimation becomes a crucial step to make the full-duplex systems feasible. In this paper, we address the problem of channel estimation in full-duplex mmWave MIMO systems using neural networks (NNs). Our approach involves sharing pilot resources between user equipments (UEs) and transmit antennas at the base station (BS), aiming to reduce the pilot overhead in full-duplex systems and to achieve a comparable level to that of a half-duplex system. Additionally, in the case of separate antenna configurations in a full-duplex BS, providing channel estimates of transmit antenna (TX) arrays to the downlink UEs poses another challenge, as the TX arrays are not capable of receiving pilot signals. To address this, we employ an NN to map the channel from the downlink UEs to the receive antenna (RX) arrays to the channel from the TX arrays to the downlink UEs. We further elaborate on how NNs perform the estimation with different architectures, (eg, different numbers of hidden layers), the introduction of non-linear distortion (eg, with a 1-bit analog-to-digital converter (ADC)), and different channel conditions (eg, low-correlated and high-correlated channels). Our work provides novel insights into NN-based channel estimators.
full-duplex
Channel estimation
mmWave MIMO
neural networks.
Författare
Mehdi Sattari
Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk
Hao Guo
New York University
Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk
Deniz Gündüz
Imperial College London
Ashkan Panahi
Chalmers, Data- och informationsteknik, Data Science och AI
Göteborgs universitet
Tommy Svensson
Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk
IEEE Transactions on Machine Learning in Communications and Networking
2831-316x (eISSN)
Vol. 2 1093-1108End-to-end slicing and data-driven automation of next generation cellular networks with mobile edge clouds (SEMANTIC)
Europeiska kommissionen (EU) (EC/H2020/861165), 2020-01-01 -- 2023-12-31.
6G kommunikationsmedveten navigering för robotdirektiv
Vetenskapsrådet (VR) (2023-00272), 2023-07-01 -- 2025-06-30.
Styrkeområden
Informations- och kommunikationsteknik
Ämneskategorier (SSIF 2011)
Elektroteknik och elektronik
DOI
10.1109/TMLCN.2024.3432865