Patent ID: 7437182

Claim:
A wireless communication method, in which a transmission stage having M antennas (M is an integer equal to or greater than 1) selects B reception stages (B is an integer equal to or greater than 1) among K reception stages (K is an integer equal to or greater than 1) each having N antennas (N is an integer equal to or greater than 1) and generates B beams to transmit B signals in a multiple-access transmission manner, the method comprising: determining a weight vector w b =[w 1,b , w 2,b , . . . , w M,b ] required to generate a b-th beam (b is an integer equal to or greater than 1 and equal to or less than B) corresponding to a b-th signal among the B signals so as to determine weights of output values respectively allocated to the M antennas for the purpose of respectively generating the B signals, the weight vector being determined so that respective elements thereof are determined to prevent interference between different beams of the B beams from exceeding a preset threshold; and transmitting the B signals through B multiple channels obtained by generating the B beams depending on weights of the elements, wherein the respective elements of the weight vector are selected to satisfy a relation of the following equation: { g i H ⁢ w b = ɛ 1 , i ≠ b g i H ⁢ w b = μ 1 , i = b where i represents an integer equal to or greater than 1 and equal to or less than B, g i (t) represents a channel selected by a scheduler for an i-th beam, and ε i and μ i represent preset thresholds.