XL-MIMO with Near-Field Spatial Non-Stationarities: Low-Complexity Detector Design

Zhi K, Pan C, Ren H, Chai KK, Wang CX, Schober R, You X (2023)

Publication Type: Conference contribution

Publication year: 2023

Journal

2016 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 7194-7199

Conference Proceedings Title: Proceedings - IEEE Global Communications Conference, GLOBECOM

Event location: Kuala Lumpur, MYS

ISBN: 9798350310900

DOI: 10.1109/GLOBECOM54140.2023.10437693

Abstract

In this work, we propose low-complexity designs for XL-MIMO in the near-field with spatial non-stationarities. We first introduce a notion of visibility region (VR) and propose a VR detection algorithm. Then, we exploit the acquired VR information to design a low-complexity detection scheme for XL-MIMO systems. To further reduce the complexity, we propose a graph theory-based user partition algorithm, relying on the VR overlap ratio between different users. Then, partial zero-forcing (PZF) is utilized to eliminate only the interference from users allocated to the same group, which further reduces computational complexity in matrix inversion. Numerical results confirm the effectiveness of the proposed algorithms which approach the performance of conventional whole array (WA)-based designs but with much lower complexity.

Authors with CRIS profile

Robert Schober Lehrstuhl für Digitale Übertragung (IDC)

Involved external institutions

Queen Mary University of London GB United Kingdom (GB) Southeast University / 东南大学 CN China (CN)

How to cite

APA:

Zhi, K., Pan, C., Ren, H., Chai, K.K., Wang, C.X., Schober, R., & You, X. (2023). XL-MIMO with Near-Field Spatial Non-Stationarities: Low-Complexity Detector Design. In Proceedings - IEEE Global Communications Conference, GLOBECOM (pp. 7194-7199). Kuala Lumpur, MYS: Institute of Electrical and Electronics Engineers Inc..

MLA:

Zhi, Kangda, et al. "XL-MIMO with Near-Field Spatial Non-Stationarities: Low-Complexity Detector Design." Proceedings of the 2023 IEEE Global Communications Conference, GLOBECOM 2023, Kuala Lumpur, MYS Institute of Electrical and Electronics Engineers Inc., 2023. 7194-7199.

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