Patent ID: 7221698

Claim:
An adaptive array antenna receiving apparatus which receives a CDMA transmitted signal by a plurality of antenna elements forming an adaptive array antenna and which includes a plurality of fingers for receiving a multipath signal, said receiving apparatus comprising: a plurality of despreading means forming said fingers, respectively each of said despreading means being connected to said antenna elements and supplied with received signals from said antenna elements for despreading the received signals to produce despread signals; a plurality of weighting factor multiplying means also forming said fingers, respectively, and supplied with the despread signals from said despreading means, respectively, each of said weighting factor multiplying means multiplying the despread signals by weighting factors calculated for said antenna elements to produce a weighted signal for a corresponding one of said fingers; combining means for combining the weighted signals, supplied from said weighting factor multiplying means to produce a rake combined signal; error signal producing means supplied with the rake combined signal and a reference signal for calculating a difference between the rake combined signal and the reference signal to produce a common error signal representative of the difference; and a plurality of antenna weight control means also forming said fingers, respectively, and supplied with the despread signals from said despreading means included in corresponding ones of said fingers, respectively, and with the common error signal in common and connected to said weighting factor multiplying means included in corresponding ones of said fingers, each of said antenna weight control means being for controlling the weighting factors for each of said weighting factor multiplying means so that a mean square of the common error signal is minimized, wherein each of said antenna weight control means controls the weighting factors for each of said weighting factor multiplying means by using an N-order, where N is greater than or equal to two, correlation matrix as an adaptive update algorithm, wherein there are N antenna elements, and wherein the incoming direction of the multipath is obtained from the N-order, where N is greater than or equal to two, correlation matrix as an adaptive update algorithm.