Nonlinear Power Amplifier-Resilient Cell-Free Massive MIMO: A Joint Optimization Approach
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866912753749327872 |
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| author | Jiang, Wei Schotten, Hans D. |
| author_facet | Jiang, Wei Schotten, Hans D. |
| contents | This letter analyzes the effects of power amplifiers (PAs) on the downlink of cell-free massive MIMO systems. We model signal transmission incorporating nonlinear PA distortion and derive a unified spectral efficiency (SE) expression applicable to arbitrary precoding schemes. To combat PA-induced performance degradation, a joint optimization approach for user association and max-min power control is proposed. Furthermore, a low-complexity alternative is developed to approximate the joint optimization with reduced computational overhead. Simulations validate the analysis and demonstrate significant performance gains of the proposed approaches over conventional techniques. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_22094 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nonlinear Power Amplifier-Resilient Cell-Free Massive MIMO: A Joint Optimization Approach Jiang, Wei Schotten, Hans D. Information Theory Signal Processing This letter analyzes the effects of power amplifiers (PAs) on the downlink of cell-free massive MIMO systems. We model signal transmission incorporating nonlinear PA distortion and derive a unified spectral efficiency (SE) expression applicable to arbitrary precoding schemes. To combat PA-induced performance degradation, a joint optimization approach for user association and max-min power control is proposed. Furthermore, a low-complexity alternative is developed to approximate the joint optimization with reduced computational overhead. Simulations validate the analysis and demonstrate significant performance gains of the proposed approaches over conventional techniques. |
| title | Nonlinear Power Amplifier-Resilient Cell-Free Massive MIMO: A Joint Optimization Approach |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2506.22094 |