214 citations · 262 across the 7 of their papers we have counts for
4 papers · 1 filter
Codebook Design and Beam Training for Extremely Large-Scale RIS: Far-Field or Near-Field?
Xiuhong Wei, Linglong Dai, Yajun Zhao +2
Reconfigurable intelligent surface (RIS) can improve the capacity of the wireless communication system by providing the extra link between the base station (BS) and the user. In or…
Channel Estimation for Extremely Large-Scale Massive MIMO: Far-Field, Near-Field, or Hybrid-Field?
Xiuhong Wei, Linglong Dai
Extremely large-scale massive MIMO (XL-MIMO) is a promising technique for future 6G communications.However, existing far-field or near-field channel model mismatches the hybrid-fie…
Channel Estimation for RIS Assisted Wireless Communications: Part II -- An Improved Solution Based on Double-Structured Sparsity
Xiuhong Wei, Decai Shen, Linglong Dai
Reconfigurable intelligent surface (RIS) can manipulate the wireless communication environment by controlling the coefficients of RIS elements. However, due to the large number of…
Channel Estimation for RIS Assisted Wireless Communications: Part I -- Fundamentals, Solutions, and Future Opportunities
Xiuhong Wei, Decai Shen, Linglong Dai
The reconfigurable intelligent surface (RIS) with low hardware cost and energy consumption has been recognized as a potential technique for future 6G communications to enhance cove…