3 papers
cs.IT2024
Beam Switching Based Beam Design for High-Speed Train mmWave Communications
Jingjia Huang, Chenhao Qi, Octavia A. Dobre +1
For high-speed train (HST) millimeter wave (mmWave) communications, the use of narrow beams with small beam coverage needs frequent beam switching, while wider beams with small bea…
cs.IT2024
Near-Field Communications for Extremely Large-Scale MIMO: A Beamspace Perspective
Kangjian Chen, Chenhao Qi, Jingjia Huang +2
Extremely large-scale multiple-input multiple-output (XL-MIMO) is regarded as one of the key techniques to enhance the performance of future wireless communications. Different from…
cs.IT2024
Near-Field Multiuser Communications based on Sparse Arrays
Kangjian Chen, Chenhao Qi, Geoffrey Ye Li +1
This paper considers near-field multiuser communications based on sparse arrays (SAs). First, for the uniform SAs (USAs), we analyze the beam gains of channel steering vectors, whi…