Leveraging location information for RIS-aided mmWave MIMO communications
He, Jiguang; Wymeersch, Henk; Juntti, Markku (2021-03-19)
J. He, H. Wymeersch and M. Juntti, "Leveraging Location Information for RIS-Aided mmWave MIMO Communications," in IEEE Wireless Communications Letters, vol. 10, no. 7, pp. 1380-1384, July 2021, doi: 10.1109/LWC.2021.3067474
© The Authors 2021. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see https://creativecommons.org/licenses/by/4.0/.
https://creativecommons.org/licenses/by/4.0/
https://urn.fi/URN:NBN:fi-fe2021041410366
Tiivistelmä
Abstract
Location information offered by external positioning systems, e.g., satellite navigation, can be used as prior information in the process of beam alignment and channel parameter estimation for reconfigurable intelligent surface (RIS)-aided millimeter wave (mmWave) multiple-input multiple-output networks. Benefiting from the availability of such prior information, albeit imperfect, the beam alignment and channel parameter estimation processes can be significantly accelerated with less candidate beams explored at all the terminals. We propose a practical channel parameter estimation method via atomic norm minimization, which outperforms the standard beam alignment in terms of both the mean square error and the effective spectrum efficiency for the same training overhead.
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