Existing transfer learning-based beam prediction approaches primarily rely on simple fine-tuning. When there is a significant difference in data distribution between the target domain and the source domain, simple fine-tuning limits the model's performance in the target domain. To tackle this problem, we propose a transfer learning-based beam prediction method that combines fine-tuning with domain adaptation. We integrate a domain classifier into fine-tuning the pre-trained model. The model extracts domain-invariant features in adversarial training with domain classifier, which can enhance model performance in the target domain. Simulation results demonstrate that the proposed transfer learning-based beam prediction method achieves better achievable rate performance than the pure fine-tuning method in the target domain, and close to those when the training is done from scratch on the target domain.
@article{arxiv.2509.20659,
title = {A Deep Transfer Learning-Based Low-overhead Beam Prediction in Vehicle Communications},
author = {Zhiqiang Xiao and Yuwen Cao and Mondher Bouazizi and Tomoaki Ohtsuki and Shahid Mumtaz},
journal= {arXiv preprint arXiv:2509.20659},
year = {2025}
}