Patent ID: 7171240
Filing Date: 2007-01-30
Classification: H04B

Abstract:
1. A base station comprising: at least two transmission antenna; and first means for restoring long-term information and short-term information from a feedback signal received from a mobile station, spatially processing dedicated physical channel (DPCH) signals using basis information including a plurality of basis vectors and basis values generated from the restored long-term information and short-term information, and transmitting the results of adding pilot channel (PICH) signals to the spatially processed results to the mobile station, wherein the long-term information includes effective long-term eigenvectors and effective long-term eigenvalues, and the short-term information includes effective short-term eigenvectors and effective short-term eigenvalues, the effective long-term eigenvectors and effective long-term eigenvalues, and the effective short-term eigenvectors and effective short-term eigenvalues determined by using at least one predetermined threshold value.