Orthogonal frequency division multiplexing (OFDM) has been one of the basic techniques. It has been widely used in many high-speed wireless applications. The orthogonal properties of the multiple subcarriers make it possible to obtain high spectral efficiency and an excellent ability to cope with fading, arising from the multipath propagation in the environment [1, 2]. However, OFDM systems have some drawbacks, the main of which is the interference between subcarriers (ICI). Since orthogonal properties are easily destroyed due to an error of the frequency shift caused by inaccuracies in the local oscillator and the overlapping spectra of the individual of subcarriers, the major focus of the OFDM-signal research is to combat this deficiency. This article provides a method of dealing with it is the interference between subcarriers.
V.P. Fedosov, V. V. Voronin, A. A. Legin, A. V. Lomakina, D. G. Kovtun, "THE STUDY OF ALGORITHMS REDUCING THE LEVEL OF OUT-OF-BAND RADIATION AND INTER CARRIER INTERFERENCE OF THE OFDM SIGNAL" in Proc. IS&T Int’l. Symp. on Electronic Imaging: Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications, 2017, pp 149 - 154, https://doi.org/10.2352/ISSN.2470-1173.2017.6.MOBMU-314