Patent ID: 8009747
Filing Date: 2011-08-30
Classification: H04L

Abstract:
1. A method for suppressing inter-carrier interference in an orthogonal frequency division multiplexing (OFDM) mobile communication system, comprising: performing down-conversion of a signal received at a receiving end; removing a cyclic prefix of the signal to obtain an original signal containing original OFDM symbols at the receiving end; reattaching the cyclic prefix to the original signal at the receiving end after the receiving end removing the cyclic prefix of the signal; and performing an operation of window adding by a window function at the receiving end, wherein frequency spectrum of the window function in said operation of window adding is: wherein sinc(f)=sin(πf)/πf, f represents frequency, T u represents width of the original signal, α represents roll-off coefficient, a 0 represents zero order coefficient of normalized fundamental function, a 1 represents first order coefficient of normalized fundamental function, and a 2 represents second order coefficient of normalized fundamental function.