Patent ID: 7408977

Claim:
A wireless communication apparatus, comprising: an array antenna configured to receive a signal at a plurality of antenna elements; a DoA estimation unit configured to estimate directions of arrival of multiple paths contained in the received signal; an angle spread estimation unit configured to estimate an angle spread of the multiple paths; a first weighting calculation unit configured to estimate a common set of weighting factors in common for all the paths; a second weighting calculation unit configured to estimate an individual set of weighting factors for each of the multiple paths based on the estimated directions of arrival of the paths; a weighting unit configured to weight the received signal by multiplying the received signal by the common set of weighting factors or the individual set of weighting factor; a demodulator configured to demodulate the weighted signal; a DoA information storing unit configured to store information about the angle spread and the directions of arrival of multiple paths of the received signal; a third weighting calculation unit configured to calculate a set of transmit weighing factors for defining a beam pattern of a signal to be transmitted; and a second weighting unit configured to weight the transmit signal by multiplying the transmit signal by the set of transmit weighting factors.