Eliminating Phase Misalignments in Cell-Free Massive MIMO via Differential Transmission
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866912263525367808 |
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| author | Freitas, Marx M. M. Buzzi, Stefano Interdonato, Giovanni |
| author_facet | Freitas, Marx M. M. Buzzi, Stefano Interdonato, Giovanni |
| contents | This paper proposes two approaches for overcoming access points' phase misalignment effects in the downlink of cell-free massive MIMO (CF-mMIMO) systems. The first approach is based on the differential space-time block coding technique, while the second one is based on the use of differential modulation schemes. Both approaches are shown to perform exceptionally well and to restore system performance in CF-mMIMO systems where phase alignment at the access points for downlink joint coherent transmission cannot be achieved. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2503_04935 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Eliminating Phase Misalignments in Cell-Free Massive MIMO via Differential Transmission Freitas, Marx M. M. Buzzi, Stefano Interdonato, Giovanni Information Theory Signal Processing This paper proposes two approaches for overcoming access points' phase misalignment effects in the downlink of cell-free massive MIMO (CF-mMIMO) systems. The first approach is based on the differential space-time block coding technique, while the second one is based on the use of differential modulation schemes. Both approaches are shown to perform exceptionally well and to restore system performance in CF-mMIMO systems where phase alignment at the access points for downlink joint coherent transmission cannot be achieved. |
| title | Eliminating Phase Misalignments in Cell-Free Massive MIMO via Differential Transmission |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2503.04935 |