Patent ID: 7227906

Claim:
A receiving device comprising: an array antenna having about K=N×M elements for receiving signals transmitted by M sets of N carriers of different frequencies carrying signals respectively modulated by different information sequences and having their signal bands overlapping each other, said N being an integer equal to or greater than 2 and said M being an integer equal to or greater than 1; an interchannel interference canceller for dividing each of the received signals from said N×M elements of said array antenna to N×M signals, weighting said divided signals, and combining said weighted signals to obtain separated N×M signals; N×M receivers each having a frequency converter for frequency-converting the separated signal using corresponding one of N different frequencies to an intermediate or baseband signal and a demodulator for demodulating said intermediate or baseband signal; and a coefficient controller for adaptively controlling weighting coefficients of said interchannel interference canceller based on the combined signals to minimize the cross correlation representing frequency cross-correlation between output signals from said interchannel interference canceller.