TRANSMITTER AND WIRELESS COMMUNICATION METHOD

摘要

A transmitter is provided with a plurality of antenna elements and uses the plurality of antenna elements to carry out spatially multiplexed transmission of data that has been weighted using a transmission weight to a receiver. Channel information indicating the propagation characteristics between the plurality of antenna elements and an antenna element provided to the receiver is obtained or estimated. When the channel information has been updated, an updated transmission weight is calculated on the basis of the pre-update channel information and the post-update channel information.