5 papers
Rotatable Antenna Enabled Multi-Cell Mixed Near-Field and Far-Field Communications
Yunpu Zhang, Changsheng You, Ruichen Zhang +4
Prior studies on mixed near-field and far-field communications have focused exclusively on single-cell scenarios, where both near-field and far-field users are served by the same b…
Rotatable Antenna Aided Mixed Near-Field and Far-Field Communications in the Upper Mid-Band: Interference Analysis and Joint Optimization
Yunpu Zhang, Changsheng You, Hing Cheung So +2
In this paper, we propose to leverage rotatable antennas (RAs) for improving the communication performance in mixed near-field and far-field communication systems by exploiting a n…
Physical-Layer Security in Mixed Near-Field and Far-Field Communication Systems
Tianyu Liu, Changsheng You, Cong Zhou +4
Extremely large-scale arrays (XL-arrays) have emerged as a promising technology to improve the spectrum efficiency and spatial resolution of future wireless systems. Different from…
Performance Analysis and Low-Complexity Beamforming Design for Near-Field Physical Layer Security
Yunpu Zhang, Yuan Fang, Changsheng You +2
Extremely large-scale arrays (XL-arrays) have emerged as a key enabler in achieving the unprecedented performance requirements of future wireless networks, leading to a significant…
Near-Field Beam Training: Joint Angle and Range Estimation with DFT Codebook
Xun Wu, Changsheng You, Jiapeng Li +1
Prior works on near-field beam training have mostly assumed dedicated polar-domain codebook and on-grid range estimation, which, however, may suffer long training overhead and degr…