Superimposed Pilot-based Channel Estimation for RIS-assisted IoT Systems Using Lightweight Network
Chaojin Qing,
Wenquan Hu,
Li Wang
et al.
Abstract:Channel estimation (CE) in Internet of Things (IoT) systems faces challenges of low spectral efficiency, high energy consumption, and blocked propagation paths. To address these issues, this paper proposes a superimposed pilot-based CE scheme with reconfigurable intelligent surface (RIS) assistance. The pilot signal is superimposed on the uplink user data to improve spectral efficiency and reduce user equipment (UE) energy consumption. RIS is introduced to enhance communication robustness in the complex propag… Show more
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