Intelligent Reflecting Surface-Enhanced OFDM: Channel Estimation and Reflection Optimization

• Published in: IEEE wireless communications letters Vol. 9; no. 4; pp. 518 - 522
• Main Authors: Zheng, Beixiong, Zhang, Rui
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 01.04.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Beamforming; channel estimation; Computer simulation; Intelligent reflecting surface (IRS); OFDM; Optimization; Orthogonal Frequency Division Multiplexing; passive beamforming; Reconfigurable intelligent surfaces; Reflection; reflection optimization; Wireless communication systems; Wireless communications

In the intelligent reflecting surface (IRS)-enhanced wireless communication system, channel state information (CSI) is of paramount importance for achieving the passive beamforming gain of IRS, which, however, is a practically challenging task due to its massive number of passive elements without tr...