Patent ID: 7526038
Filing Date: 2009-04-28
Classification: H04B,H04L

Abstract:
1. A communications method for use in a communications system including a transmitting device having a plurality of transmit antennas and a receiving device having a plurality of receive antennas, the method comprising: determining that an error has occurred in a first data transmission attempt in which data signals are transmitted from a first selection of transmit antennas for receipt at a second selection of receive antennas; in response to such a determination performing a second data transmission attempt in which the data signals are re-transmitted from a third selection of transmit antennas for receipt at a fourth selection of receive antennas, performing a reconfiguration operation to ensure that the channel response between the transmit and receive antennas selected for the first transmission attempt is different to the channel response between the transmit and receive antennas selected for the second transmission attempt; and recovering data at the receiving device using information from the first and second transmission attempts; wherein at least one of the second, third, and fourth selections is made based on an actual or estimated channel response between the transmit and receive antennas for a transmission attempt.