INFORMATION PROCESISNG DEVICE AND INFORMATION PROCESING METHOD, AS WELL AS NONTEMPORARY COMPUTER READABLE MEDIUM WHEREIN INFORMATION PROCESING HAS BEEN STORED

摘要

The purpose is to perform appropriate beam formation even where quality of a transmission path estimation value is poor. Transmission path estimation is performed with respect to a received signal of an NT×NR group, and the transmission path estimation value is outputted. The transmission path estimation value is divided into N groups of NT×M, and a covariance matrix comprising M lines and M columns with respect to the respective transmission path estimation value groups is calculated. N covariance matrices are averaged in a predetermined range for at least either of time and frequency (first averaging). Eigenvectors or eigenvector equivalents are generated on the basis of the respective average outputs of N. A transmission path between a base station antenna and a terminal antenna is generated from the eigenvectors or eigenvector equivalents and the transmission path estimation value. A covariance matrix with respect to the transmission path generated is calculated. The covariance matrix is averaged in a range different from the first averaging (second averaging), and a beam forming weight is obtained by compositing the eigenvectors or eigenvector equivalents generated.