NN-Based Frequency Domain DPD for OFDM Massive MIMO Transmitters With Multiple States
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arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866918244443488256 |
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| author | Zhang, Yundi Sun, Yanshi Chen, Li |
| author_facet | Zhang, Yundi Sun, Yanshi Chen, Li |
| contents | Frequency domain (FD)-digital predistortion (DPD) is a low-complexity DPD solution for massive multiple-inputmultiple-output (MIMO) transmitters (TXs). In this letter, we extend FD-DPD to scenarios with multiple signal states (e.g., bandwidths and power levels). First, we propose a new neural network (NN)-based FD-DPD model, whose main idea is to use a hypernetwork (HN) to generate parameters for the output layer of the main NN based on the signal states. Then, we introduce how to effectively train the model with the help of time-domain (TD)-DPD. Experimental results show that the proposed model can achieve excellent performance, without requiring additional online training when signal states change. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_10731 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | NN-Based Frequency Domain DPD for OFDM Massive MIMO Transmitters With Multiple States Zhang, Yundi Sun, Yanshi Chen, Li Signal Processing Frequency domain (FD)-digital predistortion (DPD) is a low-complexity DPD solution for massive multiple-inputmultiple-output (MIMO) transmitters (TXs). In this letter, we extend FD-DPD to scenarios with multiple signal states (e.g., bandwidths and power levels). First, we propose a new neural network (NN)-based FD-DPD model, whose main idea is to use a hypernetwork (HN) to generate parameters for the output layer of the main NN based on the signal states. Then, we introduce how to effectively train the model with the help of time-domain (TD)-DPD. Experimental results show that the proposed model can achieve excellent performance, without requiring additional online training when signal states change. |
| title | NN-Based Frequency Domain DPD for OFDM Massive MIMO Transmitters With Multiple States |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2512.10731 |