Patent ID: 7557752
Filing Date: 2009-07-07
Classification: H04L

Abstract:
1. A communication apparatus provided with a plurality of antennas and using a multicarrier transmission scheme as a transmission scheme, comprising: a plurality of channel estimating units configured to be arranged correspondingly to the plurality of the antennas and configured to generate a channel estimated value for each antenna by performing channel estimation using a received signal acquired by each antenna; a plurality of reception weight calculators configured to calculate reception weights by which subcarriers assigned the received signal of each antenna are to be multiplied using a set of the channel estimated values generated by the plurality of channel estimating units; a plurality of reception weight profile calculators configured to calculate a reception weight time profile for each antenna by converting the reception weights calculated for each antenna to data on a time domain; a plurality of transmission weight profile calculators configured to generate a transmission weight time profile for each antenna by extracting a certain section of the reception weight time profile calculated for each antenna; a plurality of transmission weight calculators configured to calculate transmission weights by which subcarriers assigned a transmission signal for each antenna are to be multiplied by converting the transmission weight time profile calculated for each antenna to data on a frequency domain; and a plurality of transmitting units configured to multiply subcarriers assigned the transmission signal for each antenna by the transmission weights calculated for each antenna and transmit subcarriers multiplied by the transmission weights through each antenna.