Patent ID: 7403798

Claim:
A radio base station system communicating signals with a plurality of mobile terminals using a plurality of antennas (A 11 to A 1 L, A 21 to A 2 L), said signal being divided into signal sections including a known reference signal of a first signal length and a data signal of a second signal length, said plurality of antennas being divided into a plurality of antenna groups each including antennas in a number that allows convergence of reception directivity using the known reference signal of said first signal length, the radio base station system comprising: a plurality of adaptive array processing portions (MR 11 to MR 1 L, 110 to 116 , MR 21 to MR 2 L, 210 to 216 ) provided corresponding to said plurality of antenna groups respectively, each performing a prescribed adaptive array processing to signals received at corresponding said antenna group to extract an array output signal corresponding to a specific mobile terminal among said plurality of mobile terminals, and generating weight information based on accuracy of said adaptive array processing; and a reception signal generating portion ( 18 , 20 ) receiving said array output signal and said weight information from each adaptive array processing portion and generating a reception signal from said specific mobile terminal, based on a plurality of said array output signals corresponding to said specific mobile terminal and a plurality of pieces of said weight information supplied from said plurality of adaptive array processing portions.