Research | Joo Won Lee

Research Areas

AI-Native Wireless Systems
5G / 6G Communication Networks
AI-RAN & Open Architectures
Network Foundation Models
Channel Estimation & Wireless Sensing
Wireless Resource Allocation & Network Control

Selected Papers

2026

Two-Tier PEFT Adapter Switching for Environment- and SNR-Adaptive Channel Estimation

Joo Won Lee, Kae Won Choi

IEEE Open Journal of the Communications Society, vol. 7, pp. 6024-6046, 2026

Keywords: channel estimation, PEFT, adapter switching, environment-adaptive channel estimation, SNR-adaptive channel estimation

This paper proposes a two-tier PEFT adapter switching approach for DNN-based wireless channel estimation. The method selects adapters according to both propagation environment and SNR condition, supporting parameter-efficient adaptation across changing wireless scenarios.

When to cite this work

Cite this work when discussing parameter-efficient adaptation for DNN-based wireless channel estimation, especially methods that switch adapters across propagation environments and SNR conditions.

JCR Q1 · JIF 6.2 · SJR 2.183 Details IEEE Xplore

BibTeX

@article{lee2026twoTierPEFT,
  title = {Two-Tier {PEFT} Adapter Switching for Environment- and {SNR}-Adaptive Channel Estimation},
  author = {Lee, Joo Won and Choi, Kae Won},
  journal = {IEEE Open Journal of the Communications Society},
  volume = {7},
  pages = {6024--6046},
  year = {2026},
  doi = {10.1109/OJCOMS.2026.3697928},
  url = {https://doi.org/10.1109/OJCOMS.2026.3697928}
}

2025

Parameter-Efficient Transfer Learning for DNN-based Channel Estimation: Adapter vs LoRA Comparison

Joo Won Lee, Kae Won Choi

2025 16th International Conference on Information and Communication Technology Convergence (ICTC), pp. 1531-1536, Jeju, Korea

Keywords: channel estimation, parameter-efficient transfer learning, adapter, LoRA, DNN

Best S6GC Paper Award Details IEEE Xplore

BibTeX

@inproceedings{lee2025parameterEfficientTransfer,
  title = {Parameter-Efficient Transfer Learning for {DNN}-based Channel Estimation: Adapter vs {LoRA} Comparison},
  author = {Lee, Joo Won and Choi, Kae Won},
  booktitle = {2025 16th International Conference on Information and Communication Technology Convergence ({ICTC})},
  pages = {1531--1536},
  year = {2025},
  month = oct,
  publisher = {IEEE},
  doi = {10.1109/ICTC66702.2025.11388362},
  url = {https://doi.org/10.1109/ICTC66702.2025.11388362}
}

Implementation of Adapter-Based Transfer Learning for Channel Estimation Using a Pretrained Transformer in Multi-Channel Environments

Joo Won Lee, Kae Won Choi

Proceedings of Symposium of the Korean Institute of Communications and Information Sciences, pp. 981-982, 2025 KICS Summer Conference, Jeju, Korea

Keywords: channel estimation, adapter-based transfer learning, pretrained transformer, multi-channel environments

Details Google Scholar

BibTeX

@inproceedings{lee2025adapterTransferKICS,
  title = {Implementation of Adapter-Based Transfer Learning for Channel Estimation Using a Pretrained Transformer in Multi-Channel Environments},
  author = {Lee, Joo Won and Choi, Kae Won},
  booktitle = {Proceedings of Symposium of the Korean Institute of Communications and Information Sciences},
  pages = {981--982},
  year = {2025},
  month = jun,
  publisher = {Korean Institute of Communications and Information Sciences},
  address = {Jeju, Korea},
  issn = {2383-8302},
  note = {2025 KICS Summer Conference, paper 32E-6},
  url = {https://d2j16w31g89z0j.cloudfront.net/site/2025s/abs/1032-QKDHC.pdf}
}