68 citations · 90 across the 18 of their papers we have counts for
7 papers · 1 filter
Strong Gaussian Approximation of Constant Learning Rate SGD: Bias and Trajectory Inference
Joseph Keslin, Wei Biao Wu
This paper develops strong Gaussian approximations (KMT type) for constant learning rate stochastic gradient descent (SGD). We work with heavy tailed noise and assume that the numb…
Joint Beamforming and Phase Shifts Design for RIS-Enabled RSMA-ISAC Systems
Xuejun Cheng, Qian Zhang, Yuhui Jiao +3
This paper investigates the sensing-centric design of reconfigurable intelligent surface (RIS)-enabled rate-splitting multiple access-integrated sensing and communication (RSMA-ISA…
Structured-Sparsity-Aware Joint User Activity Detection and Channel Estimation for OTFS-Based Grant-Free Random Access
Yao Ge, Yirui Luo, Yuhao Chi +4
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…
DRL-Based Antenna Position Optimization For MA-Assisted OTFS System Under Imperfect CSI
Maoyuan Wang, Qian Zhang, Yufei Zhao +4
In this paper, we introduce movable antenna (MA) technology into orthogonal time frequency space (OTFS) systems to enable wavelength-level antenna position optimization under imper…
Two-Stage Coded-Sliding Beam Training and QoS-Constrained Sum-Rate Maximization for SIM-Assisted Wireless Communications
Qian Zhang, Ju Liu, Yao Ge +5
Stacked intelligent metasurfaces (SIM) provide a cost-effective and scalable solution for large-scale antenna communications.However, efficient channel state information acquisitio…
Cramér-Rao Bound Minimization for Flexible Intelligent Metasurface-Enabled ISAC Systems
Qian Zhang, Yufei Zhao, Jiancheng An +4
Integrated sensing and communication (ISAC) have been widely recognized as a key enabler for future wireless networks, where the Cramér-Rao bound (CRB) plays a central role in quan…
Efficient Beamforming for Discrete SIM-Aided Multiuser Systems Under Statistical CSI
Yuhui Jiao, Qian Zhang, Xuejun Cheng +4
Stacked Intelligent Metasurfaces (SIM) have emerged as a revolutionary architecture for next-generation wireless communications, offering wave-domain signal processing capabilities…