Abstract
Extremely large scale antenna arrays (ELAAs) will be a key technology in sixth-generation (6G) wireless communication systems. Due to the large near-field region of ELAAs, sources can easily fall within this area. Hence, a near-field localization algorithm that accounts for the electromagnetic effects of ELAA elements, such as mutual coupling (MC), is essential for proper 6G wireless communication systems design. The three-dimensional (3D) multiple signal classification (MUSIC) algorithm can be used to estimate the near-field source location in the presence of MC. However, this method suffers from a high computational load due to the requirement to perform 3D-based search steps. Recently, to address this issue, an iterative method based on an oblique projection operator (IMOP) has been presented. However, IMOP’s computational load can still be high, particularly for ELAA-related scenarios. In this paper, we address this issue by using one sub-array of ELAA which holds far-field assumptions to estimate the direction of arrival (DOA). The DOA estimation relies on an one-dimensional (1D) MUSIC-based algorithm, drastically reducing the computational load. Then, the MC coefficients are calculated using the estimated DOAs. Finally, another 1D MUSIC step is used to estimate the ranges corresponding to the estimated DOA and MC coefficients. Our representative simulation results verify the superiority of the proposed near-field source localization in the presence of MC in terms of computational load, while offering comparable accuracy with the IMOP method.
Original language | English |
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Title of host publication | Proceedings of the 19th European Conference on Antennas and Propagation, EuCAP 2025 |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
Number of pages | 5 |
Publication status | Accepted - 31 Dec 2024 |
Event | 19th European Conference on Antennas and Propagation 2025 - Stockholm, Sweden Duration: 30 Mar 2025 → 04 Apr 2025 https://eucap.org/ |
Publication series
Name | EuCAP Proceedings |
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ISSN (Print) | 2164-3342 |
Conference
Conference | 19th European Conference on Antennas and Propagation 2025 |
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Abbreviated title | EuCAP 2025 |
Country/Territory | Sweden |
City | Stockholm |
Period | 30/03/2025 → 04/04/2025 |
Internet address |
Keywords
- direction estimation
- large scale antenna array
- mutual coupling
- near-field localization
- range estimation