Patent ID: 8462869

Claim:
A channel information prediction system configured to calculate a prediction filter coefficient to be used for suppressing an interference component contained in a received radio signal in a multi-antenna transmission system where at least anyone of a transmission side and a reception side of a radio signal uses a plurality of antennas, the channel information prediction system comprising: a filter coefficient calculator configured to calculate the prediction filter coefficient using a low ray element being an antenna-to-antenna element whose number of rays contained in the radio signal is smaller than a predetermined number among a plurality of antenna-to-antenna elements each between any of transmission antennas on the transmission side and any of reception antennas on the reception side, the antenna-to- antenna elements distinguished by channel information indicating a propagation path characteristic; and a channel information prediction unit configured to perform a first prediction to predict the channel information at a time of future transmission of the radio signal by using the first prediction filter coefficient calculated by the filter coefficient calculator, and to suppress the component of rays contained in the low ray element, wherein the filter coefficient calculator calculates the second prediction filter coefficient by using the low ray component whose component of rays is suppressed by the channel information prediction unit, and the channel information prediction unit performs a second prediction to predict the channel information at a time of future transmission of the radio signal by using the second prediction filter coefficient.