Wireless communications system, wireless communications apparatus, wireless communications method and computer program for wireless communication
AssigneeSony Corporation
InventorShinichi Kuroda
Life of this patent
Estimating the term…
Abstract
In performing SVD-MIMO transmission, a set-up procedure is simplified while assuring a satisfactory decoding capability with a reduced number of antennas. A transmitter estimates channel information based on reference signals sent from a receiver, determines a transmit antenna weighting coefficient matrix based on the channel information, calculates a weight to be assigned to each of components of a multiplexed signal, and sends, to the receiver, training signals for respective signal components, the training signals being weighted by the calculated weights. On the other hand, the receiver determines a receive antenna weighting coefficient matrix based on the received training signals.
Claims10
A wireless communication apparatus for transmitting a signal by multiplexing the signal using a plurality of antennas, the apparatus comprising:
- circuitry configured to:
- acquire feedback information corresponding to a characteristic of a channel linking the apparatus to a receiver;
- determine a weighting coefficient matrix for each of the plurality of antennas based on the acquired feedback information;
- and
- control transmission of training signals to the receiver, the training signals being weighted by weights included in the weighting coefficient matrix and intended for channel estimation at the receiver, wherein the number of training signals is determined according to the number of antennas.
Dependencies are inferred from the claim text.