Average and Worst-case Analysis of MIMO Beamforming Loss due to Hardware Impairments
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914142449827840 |
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| author | Chen, Xuan Crussière, Matthieu Magoarou, Luc Le |
| author_facet | Chen, Xuan Crussière, Matthieu Magoarou, Luc Le |
| contents | In this paper, we investigate the impact of hardware impairments in antenna arrays on the beamforming performance of multi-input multi-output (MIMO) communication systems. We consider two types of imperfections: per-element gain mismatches and inter-element spacing deviations. We analytically determine the impairment configurations that result in the worst-case degradation. In addition, the analytical expression of the average-case performance is also derived for comparison. Simulation and theoretical results show that the average SNR degradation remains relatively limited, whereas the worst-case scenarios can exhibit substantially higher losses. These findings provide clear insight into the robustness limits of MIMO systems under practical hardware imperfections. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_05090 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Average and Worst-case Analysis of MIMO Beamforming Loss due to Hardware Impairments Chen, Xuan Crussière, Matthieu Magoarou, Luc Le Signal Processing In this paper, we investigate the impact of hardware impairments in antenna arrays on the beamforming performance of multi-input multi-output (MIMO) communication systems. We consider two types of imperfections: per-element gain mismatches and inter-element spacing deviations. We analytically determine the impairment configurations that result in the worst-case degradation. In addition, the analytical expression of the average-case performance is also derived for comparison. Simulation and theoretical results show that the average SNR degradation remains relatively limited, whereas the worst-case scenarios can exhibit substantially higher losses. These findings provide clear insight into the robustness limits of MIMO systems under practical hardware imperfections. |
| title | Average and Worst-case Analysis of MIMO Beamforming Loss due to Hardware Impairments |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2511.05090 |