Method and device for eliminating interference

The invention discloses a method and device for eliminating interference. The method comprises the step of acquiring sub-carriers related to every user from sub-carriers occupied by a plurality of users, the step of estimating and determining performance parameter values of each user according to a channel, and the step of sequentially acquiring an interference value of the sub-carriers, processed at present, related to the user to the sub-carriers, processed at present, related to other users besides the user according to the performance parameter values from large to small and eliminating the interference of the sub-carriers, processed at present, related to the user to the sub-carriers, processed at present, related to other users besides the user according to the interference value. By means of the technical scheme, the accuracy of balanced demodulation is improved, and the performance of a mobile communication system is optimized.