dorsal/arxiv
View SchemaWiFo-E: A Scalable Wireless Foundation Model for End-to-End FDD Precoding in Communication Networks
| Authors | Weibo Wen, Shijian Gao, Haotian Zhang, Xiang Cheng, Liuqing Yang |
|---|---|
| Categories | |
| ArXiv ID | 2601.09186vv1 |
| URL | https://arxiv.org/abs/2601.09186 |
| License | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
Abstract
Accurate precoding in massive multiple-input multiple-output (MIMO) frequency-division duplexing (FDD) systems relies on efficient channel state information (CSI) acquisition. End-to-end learning frameworks improve performance by jointly optimizing this process, but they lack scalability and fail to generalize across different system configurations, such as varying numbers of antennas and users. To overcome this limitation, we introduce WiFo-E, a wireless foundation model designed for scalable end-to-end precoding. WiFo-E employs multi-task pretraining on a diverse set of configurations to learn transferable representations of underlying wireless principles. Central to the model is a sparse Mixture-of-Experts (MoE) Transformer architecture, which mitigates task interference and enhances training efficiency by activating specialized parameter subsets adaptively. Extensive simulations demonstrate that WiFo-E outperforms conventional per-configuration training and shows strong generalization to unseen system configurations, providing a flexible and efficient foundation for adaptive massive MIMO precoding.
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"abstract": "Accurate precoding in massive multiple-input multiple-output (MIMO) frequency-division duplexing (FDD) systems relies on efficient channel state information (CSI) acquisition. End-to-end learning frameworks improve performance by jointly optimizing this process, but they lack scalability and fail to generalize across different system configurations, such as varying numbers of antennas and users. To overcome this limitation, we introduce WiFo-E, a wireless foundation model designed for scalable end-to-end precoding. WiFo-E employs multi-task pretraining on a diverse set of configurations to learn transferable representations of underlying wireless principles. Central to the model is a sparse Mixture-of-Experts (MoE) Transformer architecture, which mitigates task interference and enhances training efficiency by activating specialized parameter subsets adaptively. Extensive simulations demonstrate that WiFo-E outperforms conventional per-configuration training and shows strong generalization to unseen system configurations, providing a flexible and efficient foundation for adaptive massive MIMO precoding.",
"arxiv_id": "2601.09186",
"authors": [
"Weibo Wen",
"Shijian Gao",
"Haotian Zhang",
"Xiang Cheng",
"Liuqing Yang"
],
"categories": [
"eess.SP"
],
"license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
"title": "WiFo-E: A Scalable Wireless Foundation Model for End-to-End FDD Precoding in Communication Networks",
"url": "https://arxiv.org/abs/2601.09186",
"version": "v1"
},
"schema_id": "dorsal/arxiv",
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