3 papers
eess.SP2023
Parametric Channel Estimation with Short Pilots in RIS-Assisted Near- and Far-Field Communications
Mehdi Haghshenas, Parisa Ramezani, Maurizio Magarini +1
Considering the dimensionality of a typical reconfigurable intelligent surface (RIS), channel state information acquisition in RIS-assisted systems requires lengthy pilot transmiss…
eess.SP2023
A New Channel Subspace Characterization for Channel Estimation in RIS-Aided Communications
Mehdi Haghshenas, Parisa Ramezani, Maurizio Magarini +1
A reconfigurable intelligent surface (RIS) is a holographic MIMO surface composed of a large number of passive elements that can induce adjustable phase shifts to the impinging wav…
eess.SP2023
Efficient LOS Channel Estimation for RIS-Aided Communications Under Non-Stationary Mobility
Mehdi Haghshenas, Parisa Ramezani, Emil Björnson
Reconfigurable intelligent surface (RIS) is a newly-emerged technology that, with its unique features, is considered to be a game changer for future wireless networks. Channel esti…