Reconfigurable intelligent surface (RIS): Eigenvalue decomposition-based separate channel estimation
Künye
Zegrar, S. E., Afeef, L. ve Arslan, H. (2021). Reconfigurable intelligent surface (RIS): Eigenvalue decomposition-based separate channel estimation. 32nd IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. Virtual, Helsinki, 13-16 September 2021. https://dx.doi.org/10.1109/PIMRC50174.2021.9569501Özet
Reconfigurable intelligent surface (RIS) has recently drawn significant attention in wireless communication technologies. However, identifying, modeling, and estimating the RIS channel in multiple-input multiple-output (MIMO) systems are considered challenging in recent studies. In this paper, a disassembled channel estimation framework for the RIS-MIMO system is proposed based on the eigenvalue decomposition (EVD) concept to separate the cascaded channel links and estimate each link separately. This estimation is based on modeling the RIS-MIMO channel as a keyhole MIMO system model. Numerical results show that the proposed estimation method has a low estimation time overhead while providing less estimation error.
Kaynak
32nd IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRCBağlantı
https://dx.doi.org/10.1109/PIMRC50174.2021.9569501https://hdl.handle.net/20.500.12511/8579
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