Method for detecting orthogonal time-frequency-space signal and related product thereof

The invention discloses a method for detecting orthogonal time-frequency-space signals and a related product thereof. The method comprises the following steps: performing first-stage equalization processing in a time-frequency domain based on a received orthogonal time-frequency-space signal to obtain a data symbol estimation value in the time-frequency domain; performing mapping transformation to a delay-Doppler domain based on the data symbol estimation value to obtain an initial estimation symbol required by the delay-Doppler domain; and carrying out local search based on the initial estimation symbol by utilizing a maximum ratio combination iterative detection algorithm to judge the initial estimation symbol and finish second-stage equalization processing. By utilizing the scheme of the invention, the high-reliability and high-speed transmission characteristics of the orthogonal time-frequency space signal under the time-frequency double-selection channel and the sparse and slow-varying characteristics of