6 papers
Structured-Sparsity-Aware Joint User Activity Detection and Channel Estimation for OTFS-Based Grant-Free Random Access
Yao Ge, Yirui Luo, Yuhao Chi +5
Grant-free random access (GFRA) is a promising solution for massive machine-type communications (mMTC) in future wireless networks. However, reliable user activity detection and ch…
Multi-Hop RIS ISAC for Target Positioning: A Tensor Decomposition-based Approach
Yirui Luo, Xiaoyan Ma, Yong Liang Guan +2
Reconfigurable intelligent surface (RIS) has demon- strated remarkable potential to enhance the performance of integrated sensing and communication (ISAC), particularly when the li…
CSI RefineNet: A Soft Data-Aided Iterative Receiver for High-Mobility OFDM Systems
Yirui Luo, Yihang Xie, Yao Ge +2
In high-mobility orthogonal frequency division multiplexing (OFDM) systems, rapid channel variation can make the channel state information (CSI) estimated from pilots inaccurate fo…
A Unified Framework for Ambiguity Function Shaping and PAPR Control in AFDM Systems
Lingsheng Meng, Yong Liang Guan, Zilong Liu +2
Affine frequency division multiplexing (AFDM) has emerged as a promising integrated sensing and communication (ISAC) waveform due to its intrinsic chirp signalling nature. Neverthe…
A Novel Angle-Delay-Doppler Estimation Scheme for AFDM-ISAC System in Mixed Near-field and Far-field Scenarios
Yirui Luo, Yong Liang Guan, Yao Ge +2
The recently proposed multi-chirp waveform, affine frequency division multiplexing (AFDM), is considered as a potential candidate for integrated sensing and communication (ISAC). H…
Target Sensing With Off-grid Sparse Bayesian Learning for AFDM-ISAC System
Yirui Luo, Yong Liang Guan, Yao Ge +1
The recently proposed multi-chirp waveform, affine frequency division multiplexing (AFDM), is regarded as a prospective candidate for integrated sensing and communication (ISAC) du…