8 papers
Acoustic RIS for Massive Spatial Multiplexing: Unleashing Degrees of Freedom and Capacity in Underwater Communications
Longfei Zhao, Jingbo Tan, Jintao Wang +2
Underwater acoustic (UWA) communications are essential for high-speed marine data transmission but remain severely constrained by limited bandwidth, significant propagation loss, a…
On the Characterization and Evaluation of Doppler Squint in Wideband ODDM Systems
Xuehan Wang, Jinhong Yuan, Jintao Wang +1
The recently proposed orthogonal delay-Doppler division multiplexing (ODDM) modulation has been demonstrated to enjoy excellent reliability over doubly-dispersive channels. However…
Data-Driven Modulation Optimization with LMMSE Equalization for Reliability Enhancement in Underwater Acoustic Communications
Xuehan Wang, Hengyu Zhang, Jintao Wang +2
Ultra-reliable underwater acoustic (UWA) communications serve as one of the key enabling technologies for future space-air-ground-underwater integrated networks. However, the relia…
Covering Underwater Shadow Zones using Acoustic Reconfigurable Intelligent Surfaces
Longfei Zhao, Jingbo Tan, Jintao Wang +2
To better explore the oceans, seamless communication coverage of the vast 3D underwater space is desired. Unlike terrestrial networks using radio signals, underwater acoustic commu…
Augmenting Channel Simulator and Semi- Supervised Learning for Efficient Indoor Positioning
Yupeng Li, Xinyu Ning, Shijian Gao +4
This work aims to tackle the labor-intensive and resource-consuming task of indoor positioning by proposing an efficient approach. The proposed approach involves the introduction o…
On the Mutual Information of Multi-RIS Assisted MIMO: From Operator-Valued Free Probability Aspect
Zhong Zheng, Siqiang Wang, Zesong Fei +2
The reconfigurable intelligent surface (RIS) is useful to effectively improve the coverage and data rate of end-to-end communications. In contrast to the well-studied coverage-exte…
Chirp-based Hierarchical Beam Training for Extremely Large-Scale Massive MIMO
Xu Shi, Jintao Wang, Zhi Sun +1
XL-MIMO promises to provide ultrahigh data rates in Terahertz (THz) spectrum. However, the spherical-wavefront wireless transmission caused by large aperture array presents huge ch…
Spatial-chirp Codebook-based Hierarchical Beam Training for Extremely Large-Scale Massive MIMO
Xu Shi, Jintao Wang, Zhi Sun +1
Extremely large-scale multiple-input multiple-output (XL-MIMO) promises to provide ultrahigh data rates in millimeter-wave (mmWave) and Terahertz (THz) spectrum. However, the spher…