Enhanced ELM Based Channel Estimation for RIS-Assisted OFDM Systems With Insufficient CP and Imperfect Hardware

Chaojin Qing,Li Wang,Lei Dong,Jiafan Wang

IEEE Communications Letters（2022）

引用 8|浏览16

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摘要

Reconfigurable intelligent surface (RIS)-assisted orthogonal frequency division multiplexing (OFDM) systems have aroused extensive research interests due to the controllable communication environment and the performance of combating multi-path interference. However, as the premise of RIS-assisted OFDM systems, the accuracy of channel estimation is severely degraded by the increased possibility of ...

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关键词

Channel estimation,OFDM,Hardware,Estimation,Training,Nonlinear distortion,Standardization

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