This repository provides software-based implementations of semantic PHY-RAN systems. Most projects support over-the-air transmission using Ettus USRP SDRs and include the corresponding USRP transmission code.

Projects Included

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Bridging Neural Networks and Wireless Systems with MIMO-OFDM Semantic Communications

Code repository for the paper Bridging Neural Networks and Wireless Systems with MIMO-OFDM Semantic Communications. Features Python-based 2×2 MIMO-OFDM implementation with semantic encoding/decoding and Ettus USRP X310 control via Python UHD bindings. This is a mirror of the original repository. Please direct questions and check for updates in the original repo. See README.md in /bridging-semcomm for details.

@ARTICLE{yoo2025bridging,
  author={Yoo, Hanju and Choi, Dongha and Kim, Yonghwi and Kim, Yoontae and Kim, Songkuk and Chae, Chan-Byoung and Heath, Robert W.},
  journal={IEEE Wireless Communications}, 
  title={Bridging Neural Networks And Wireless Systems with MIMO-OFDM Semantic Communications}, 
  year={2025},
  volume={32},
  number={5},
  pages={48-55},
  month={Sept.}}

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On the Role of ViT and CNN in Semantic Communications: Analysis and Prototype Validation

Code repository for the paper On the Role of ViT and CNN in Semantic Communications: Analysis and Prototype Validation. This is a mirror of the original repository. Please direct questions and check for updates in the original repo. See README.md in /ontherole-semcomm for details.

@ARTICLE{yoo2023role,
  author={Yoo, Hanju and Dai, Linglong and Kim, Songkuk and Chae, Chan-Byoung},
  journal={IEEE Access}, 
  title={On the Role of ViT and CNN in Semantic Communications: Analysis and Prototype Validation}, 
  year={2023},
  volume={11},
  number={},
  pages={71528-71541},
  doi={10.1109/ACCESS.2023.3291405}}

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Demo: Real-Time Semantic Communications with a Vision Transformer

Code repository for ICC 2022 demo "Real-Time Semantic Communications with a Vision Transformer". See README.md in /realtime-semcomm-vit for details.

@INPROCEEDINGS{yoo2022real,
  author={Yoo, Hanju and Jung, Taehun and Dai, Linglong and Kim, Songkuk and Chae, Chan-Byoung},
  booktitle={2022 IEEE International Conference on Communications Workshops (ICC Workshops)}, 
  title={Demo: Real-Time Semantic Communications with a Vision Transformer}, 
  year={2022},
  volume={},
  number={},
  pages={1-2},
  doi={10.1109/ICCWorkshops53468.2022.9914635}}

This work was supported by Institute of Information & communications Technology Planning & Evaluation (IITP) grant funded by the Korea government (MSIT) (No. RS-2024-00428780, 6G·Cloud Research and Education Open Hub).