On Superimposed Pilots Transmission for RIS-Assisted Cell-Free Massive MIMO
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2024.3427108
Abstract: This article studies the reconfigurable intelligent surface (RIS)-assisted cell-free massive multiple-input–multiple-output (MIMO) systems under superimposed pilots (SPs) transmission. We derive a closed-form expression for the linear minimum mean square error channel estimation and the spectral… read more here.
Keywords: transmission; superimposed pilots; cell free; free massive ... See more keywords
Pilot Decontamination Based on Superimposed Pilots Assisted by Time-Multiplexed Pilots in Massive MIMO Networks
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2019.2949605
Abstract: Pilot contamination has been recognized as one of the main limiting factors in massive multiple-input multiple-output (MIMO) since it damages the acquisition of accurate channel state information (CSI) at base stations. In this work, we… read more here.
Keywords: mimo; superimposed pilots; time multiplexed; pilot decontamination ... See more keywords
Channel Estimation for AFDM With Superimposed Pilots
Sign Up to like & getrecommendations! Published in 2024 at "IEEE Transactions on Vehicular Technology"
DOI: 10.1109/tvt.2024.3469380
Abstract: The recent proposed affine frequency division multiplexing (AFDM) employing a multi-chirp waveform has shown its reliability and robustness in doubly selective fading channels. In the existing embedded pilot-aided channel estimation methods, the presence of guard… read more here.
Keywords: superimposed pilots; estimation afdm; afdm superimposed; pilot ... See more keywords