12 papers
Rotatable IRS-Assisted 6DMA Communications: A Two-timescale Design
Chao Zhou, Changsheng You, Cong Zhou +4
Intelligent reflecting surface (IRS) and movable antenna (MA) are promising technologies to enhance wireless communication by reconfiguring channels at the environment and transcei…
MA-enhanced Mixed Near-field and Far-field Covert Communications
Chao Zhou, Changsheng You, Cong Zhou +2
In this paper, we propose to employ a modular-based movable extremely large-scale array (XL-array) at Alice for enhancing covert communication performance. Compared with existing w…
Joint Frequency-Space Sparse Reconstruction for DOA Estimation under Coherent Sources and Amplitude-Phase Errors
Yutong Chen, Cong Zhou, Changsheng You +1
In this letter, we propose a joint frequency-space sparse reconstruction method for direction-of-arrival (DOA) estimation, which effectively addresses the issues arising from the e…
Frequency-switching Array Enhanced Physical-Layer Security in Terahertz Bands: A Movable Antenna Perspective
Cong Zhou, Changsheng You, Chao Zhou +4
In this paper, we propose a new frequency-switching array (FSA) to enhance the physical-layer security (PLS) in the presence of multiple eavesdroppers (Eves), where the carrier fre…
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…
Super-resolution Wideband Beam Training for Near-field Communications with Ultra-low Overhead
Cong Zhou, Changsheng You, Shuo Shi +2
In this paper, we propose a super-resolution wideband beam training method for near-field communications, which is able to achieve ultra-low overhead. To this end, we first study t…
Mixed Near-field and Far-field Localization in Extremely Large-scale MIMO Systems
Cong Zhou, Changsheng You, Chao Zhou +2
In this paper, we study efficient \emph{mixed near-field and far-field} target localization methods in extremely large-scale multiple-input multiple-output (XL-MIMO) systems Compar…
Near-Field Localization With Coprime Array
Hongqiang Cheng, Changsheng You, Cong Zhou
Large-aperture coprime arrays (CAs) are expected to achieve higher sensing resolution than conventional dense arrays (DAs), yet with lower hardware and energy cost. However, existi…
Near-field Beam-focusing Pattern under Discrete Phase Shifters
Haodong Zhang, Changsheng You, Cong Zhou
Extremely large-scale arrays (XL-arrays) have emerged as a promising technology for enabling near-field communications in future wireless systems. However, the huge number of anten…
Multi-beam Training for Near-field Communications in High-frequency Bands
Cong Zhou, Changsheng You, Zixuan Huang +4
In this paper, we study efficient multi-beam training design for near-field communications to reduce the beam training overhead of conventional single-beam training methods. In par…
Near-field Beam Training with Sparse DFT Codebook
Cong Zhou, Chenyu Wu, Changsheng You +1
Extremely large-scale array (XL-array) has emerged as one promising technology to improve the spectral efficiency and spatial resolution of future sixth generation (6G) wireless sy…
Sparse Array Enabled Near-Field Communications: Beam Pattern Analysis and Hybrid Beamforming Design
Cong Zhou, Changsheng You, Haodong Zhang +2
Extremely large-scale array (XL-array) has emerged as a promising technology to enable near-field communications for achieving enhanced spectrum efficiency and spatial resolution,…