Patent ID: 8923338

Claim:
A method of receiving a non-synchronous signal in an Orthogonal Frequency Division Multiple Access (OFDMA) system, comprising: performing Fourier transform on a received first time domain signal to acquire a frequency domain signal corresponding to the received first time domain signal; and setting a sub-carrier occupied by a band of a non-synchronous signal to be received in the frequency domain signal to zero, performing inverse Fourier transform on the frequency domain signal to acquire a second time domain signal, and subtracting the second time domain signal from the first time domain signal to acquire a time domain received signal corresponding to the band of the non-synchronous signal; and wherein the method is enabled to acquire the time domain received signal corresponding to the band of the non-synchronous signal by setting a sub-carrier other than the sub-carrier occupied by the band of the non-synchronous signal to zero, and performing inverse Fourier transform on the frequency domain signal.