5 papers
Two-Stage IQ Imbalance Estimation and Compensation for AFDM Systems
Zhenfeng Huang, Yitong Liu, Yuping Yan +1
Affine frequency division multiplexing (AFDM) is an emerging chirp-based multicarrier waveform with strong diversity in doubly selective channels, but practical systems suffer from…
Rotatable Antenna-Enabled Near-Field Integrated Sensing and Communication
Zequan Wang, Liang Yin, Yitong Liu +1
In this paper, we propose leveraging rotatable antennas (RAs) to enhance near-field communication and sensing by exploiting a new orientation-domain spatial degree-of-freedom (DoF)…
Geometry-Aware Contrastive Learning for Few-Shot Automatic Modulation Recognition
Guanqun Zhao, Yitong Liu, Jiaxuan Fang +2
Standard Self-Supervised Learning (SSL) for Automatic Modulation Recognition (AMR) struggles with ineffective isotropic augmentations, spectral instability, and semantic drift. To…
Score-Based Conditional Flow Models for MIMO Receiver Design with Superimposed Pilots
Ruhao Zhang, Yupeng Li, Yitong Liu +4
Accurate channel state information (CSI) is vital for multiple-input multiple-output (MIMO) systems. However, superimposed pilots (SIP), which reduce overhead, introduce severe pil…
DGoT: Dynamic Graph of Thoughts for Scientific Abstract Generation
Xinyu Ning, Yutong Zhao, Yitong Liu +1
The method of training language models based on domain datasets has obtained significant achievements in the task of generating scientific paper abstracts. However, such models fac…