Before revision:  In this paper , from the intrinsic properties of CSI data itself, we devised the corresponding deep learning building blocks to compose a novel neural network CQNet and experiment result shows CQNet outperform the state-of-the-art method with less computational overhead by achieving an average performance improvement of 8.07 \% in both outdoor and indoor scenarios .
After revision:  In this paper , from the intrinsic properties of CSI data itself, we devised the corresponding deep learning building blocks to compose a novel neural network CQNet and experiment result shows CQNet outperform the state-of-the-art method by average accuracy improvement of 5.41 \% in both outdoor and indoor scenarios .