Patent ID: 7715863

Claim:
A method for rate control in a multiple antenna communication system, the method comprising: estimating channel conditions between a receiver and a transmitter; and selecting one out of a plurality of optimized transmission rates for transmission using a feedback link back to the transmitter, with said selecting being performed based on the estimated channel conditions; and the plurality of transmission rates being optimized so as to maximize throughput of the system for a given average power; wherein an optimal transmission rate is selected using the following maximization of throughput: max R , R ⁡ ( γ ) ⁢ · R ⁡ ( γ ) ⁢ ( 1 - Prob ⁡ ( log ⁢ ⁢ det ⁡ ( I + P M ⁢ γ ) < R ⁡ ( γ ) ) ) , where γ is the channel state, R is the set of transmission rates, R(γ) is a mapping from the set of effective channel qualities to the set of transmission rates, I is the mutual information of the channel, P is the total available average power, and M is the number of transmit antennae.