A method for determining a cooperative set of antennas, the method comprises: acquiring, by a signal joint processing system, qualities of channels between a first mobile terminal and at least two antennas; determining those of the antennas with a channel quality higher than a first channel quality threshold to compose a cooperative set of antennas for the first mobile terminal; characterized in further comprising: acquiring, by the signal joint processing system, qualities of channels between the respective antennas in the cooperative set of antennas and respective interfering mobile terminals at a frequency point, wherein, the first mobile terminal transmits or receives a signal at the frequency point; calculating, by the signal joint processing system, for each of the interfering mobile terminals a sum of the qualities of channels between the interfering mobile terminal and the respective antennas; determining those of the interfering mobile terminals with a sum of channel qualities higher than a second channel quality threshold to compose a cooperative set of interfering mobile terminals for the first mobile terminal; and performing, by the signal joint processing system, a cooperative process on the antennas in the cooperative set of antennas during detection of the signal transmitted from the first mobile terminal to suppress interference signals from the set of interfering mobile terminals. acquiring, by a signal joint processing system, qualities of channels between a first mobile terminal and at least two antennas; determining those of the antennas with a channel quality higher than a first channel quality threshold to compose a cooperative set of antennas for the first mobile terminal; characterized in further comprising: acquiring, by the signal joint processing system, qualities of channels between the respective antennas in the cooperative set of antennas and respective interfering mobile terminals at a frequency point, wherein, the first mobile terminal transmits or receives a signal at the frequency point; calculating, by the signal joint processing system, for each of the interfering mobile terminals a sum of the qualities of channels between the interfering mobile terminal and the respective antennas; determining those of the interfering mobile terminals with a sum of channel qualities higher than a second channel quality threshold to compose a cooperative set of interfering mobile terminals for the first mobile terminal; and performing, by the signal joint processing system, a cooperative process on the antennas in the cooperative set of antennas during detection of the signal transmitted from the first mobile terminal to suppress interference signals from the set of interfering mobile terminals. acquiring, by the signal joint processing system, qualities of channels between the respective antennas in the cooperative set of antennas and respective interfering mobile terminals at a frequency point, wherein, the first mobile terminal transmits or receives a signal at the frequency point; calculating, by the signal joint processing system, for each of the interfering mobile terminals a sum of the qualities of channels between the interfering mobile terminal and the respective antennas; determining those of the interfering mobile terminals with a sum of channel qualities higher than a second channel quality threshold to compose a cooperative set of interfering mobile terminals for the first mobile terminal; and performing, by the signal joint processing system, a cooperative process on the antennas in the cooperative set of antennas during detection of the signal transmitted from the first mobile terminal to suppress interference signals from the set of interfering mobile terminals.