Patent ID: 7224943

Claim:
A method of influencing the transmission of signals from a transmitting device to a receiving device in a communication system comprising at least one transmitting device and at least one receiving device, said method comprising: processing, by the receiving device, transmission signals received from the transmitting device; generating, by the receiving device, a feedback signal on the basis of the transmission signals processed by the receiving device; transmitting the feedback signal from the receiving device to the transmitting device; processing, by the transmitting device, feedback information received from the receiving device during a certain time period, the feedback information including the feedback signal and previous feedback signals received from the receiving device; determining, by the transmitting device, transmit weights to be applied to transmission signals to be transmitted from the transmitting device to the receiving device, in accordance with the feedback information and selecting, by the transmitting device, a feedback mode and a corresponding feedback word length on the basis of the feedback information, wherein the feedback signal comprises a feedback word which is to be generated according to the feedback mode selected by the transmitting device, wherein the corresponding feedback word length is controlled in accordance with temporal properties of a channel between the transmitting device and the receiving device, and wherein the controlling of the corresponding feedback word length comprises comparing previous feedback words and detecting the change in the feedback words of same length; and selecting the corresponding feedback word length in accordance with the detected change in the feedback words.