Fluid Antenna With Linear MMSE Channel Estimation for Large-Scale Cellular Networks [PDF]
IEEE Transactions on Communications, 2022 The concept of reconfigurable fluid antennas (FA) is a potential and promising solution to enhance the spectral efficiency of wireless communication networks.
Christodoulos Skouroumounis, I. Krikidis
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Denoising Generalization Performance of Channel Estimation in Multipath Time-Varying OFDM Systems. [PDF]
Sensors (Basel), 2023 Although Orthogonal Frequency Division Multiplexing (OFDM) technology is still the key transmission waveform technology in 5G, traditional channel estimation algorithms are no longer sufficient for the high-speed multipath time-varying channels faced by ...
Li Y, Bian X, Li M.
europepmc +2 more sources
Joint Channel Estimation Algorithm Based on DFT and DWT
Applied Sciences, 2022 Channel estimation is an important component of orthogonal frequency division multiplexing (OFDM) systems. The existence of virtual subcarriers leads to energy spreading in the time-domain when using Inverse Fast Fourier Transform (IFFT), resulting in ...
Zhe Zhang, Xin Bian, Mingqi Li
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Channel Estimation for RIS-Empowered Multi-User MISO Wireless Communications [PDF]
IEEE Transactions on Communications, 2020 Reconfigurable Intelligent Surfaces (RISs) have been recently considered as an energy-efficient solution for future wireless networks due to their fast and low-power configuration, which has increased potential in enabling massive connectivity and low ...
Li Wei +5 more
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Channel Estimation for Extremely Large-Scale Massive MIMO: Far-Field, Near-Field, or Hybrid-Field? [PDF]
IEEE Communications Letters, 2021 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-field channel feature in the practical XL-MIMO system.
Xiuhong Wei, L. Dai
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MIMO Channel Estimation Using Score-Based Generative Models [PDF]
IEEE Transactions on Wireless Communications, 2022 Channel estimation is a critical task in multiple-input multiple-output (MIMO) digital communications that substantially affects end-to-end system performance.
Marius Arvinte, Jonathan I. Tamir
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Discrete Fourier Transform with Denoise Model Based Least Square Wiener Channel Estimator for Channel Estimation in MIMO-OFDM. [PDF]
Entropy (Basel), 2022 Multiple-input Multiple-Output (MIMO) systems require orthogonal frequency division multiplexing to operate efficiently in multipath communication (OFDM).
S D +5 more
europepmc +2 more sources
Channel Estimation and Hybrid Precoding for Millimeter Wave Cellular Systems [PDF]
IEEE Journal on Selected Topics in Signal Processing, 2014 Millimeter wave (mmWave) cellular systems will enable gigabit-per-second data rates thanks to the large bandwidth available at mmWave frequencies. To realize sufficient link margin, mmWave systems will employ directional beamforming with large antenna ...
A. Alkhateeb +3 more
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Channel Estimation With Reconfigurable Intelligent Surfaces—A General Framework [PDF]
Proceedings of the IEEE, 2021 Optimally extracting the advantages available from reconfigurable intelligent surfaces (RISs) in wireless communications systems requires estimation of the channels to and from the RIS.
A. Swindlehurst +4 more
semanticscholar +1 more source
IEEE Transactions on Communications, 2022 Reconfigurable intelligent surfaces (RISs) are capable of enhancing the capacity of wireless networks at a low cost. In practical RIS-assisted communication systems, the acquisition of channel state information (CSI) and RIS reflection optimization ...
Jiancheng An, Chao Xu, L. Gan, L. Hanzo
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