5 papers
Non-Square UPA-Enabled XL-MIMO Systems: Anisotropic Near-Field Characterization, Fundamental Limits, and Channel Estimation
Yilong Liu, Xi Yang, Jing Xu +2
Extremely large-scale multiple-input multiple-output (XL-MIMO) is crucial for next-generation communication systems. In practice, the deployment of non-square uniform planar arrays…
Position-Aided Semantic Communication for Efficient Image Transmission: Design, Implementation, and Experimental Results
Peiwen Jiang, Chao-Kai Wen, Shi Jin +1
Semantic communication, augmented by knowledge bases (KBs), offers substantial reductions in transmission overhead and resilience to errors. However, existing methods predominantly…
On the Downlink Average Energy Efficiency of Non-Stationary XL-MIMO
Jun Zhang, Jiacheng Lu, Jingjing Zhang +3
Extra large-scale multiple-input multiple-output (XL-MIMO) is a key technology for future wireless communication systems. This paper considers the effects of visibility region (VR)…
Beyond MMSE: Rank-1 Subspace Channel Estimator for Massive MIMO Systems
Bin Li, Ziping Wei, Shaoshi Yang +4
To glean the benefits offered by massive multi-input multi-output (MIMO) systems, channel state information must be accurately acquired. Despite the high accuracy, the computationa…
Achievable Rate Analysis and Optimization of Double-RIS Assisted Spatially Correlated MIMO with Statistical CSI
Kaizhe Xu, Jiajia Guo, Jun Zhang +2
Reconfigurable intelligent surface (RIS) is a novel meta-material which can form a smart radio environment by dynamically altering reflection directions of the impinging electromag…