Interference Characterization and Mitigation in Near-Field XL-MIMO: A Case for Linear and Circular Array Geometries
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
Extremely large-scale multiple-input multiple-output (XL-MIMO) introduces near-field communication regime due to its large antenna aperture in which spherical wavefronts and beam focusing replace conventional far-field assumptions. This shift significantly impacts interference behavior, especially for near-field users who are affected by both near- and far-field interferers. In this letter, we derive a closed-form expression for total interference and analyze the spectral efficiency for different array geometries. Our results reveal that uniform circular arrays (UCAs) outperform uniform linear arrays (ULAs) in the near-field by generating Bessel-like beams that enhance spatial focusing and significantly reduce interference.
Details
| Original language | English |
|---|---|
| Pages (from-to) | 111-115 |
| Number of pages | 5 |
| Journal | IEEE wireless communications letters |
| Volume | 15 |
| Publication status | Published - 15 Oct 2025 |
| Peer-reviewed | Yes |
External IDs
| Scopus | 105019578144 |
|---|---|
| ORCID | /0000-0003-3045-6271/work/203811320 |
| ORCID | /0000-0002-1315-7635/work/203813578 |
| ORCID | /0000-0001-7075-8990/work/203814565 |
| ORCID | /0000-0001-8165-5735/work/203814775 |
Keywords
Keywords
- Antenna arrays, Antennas, Correlation, Focusing, Geometry, Interference, Receiving antennas, Spectral efficiency, Transmitting antennas, Vectors