Patent ID: 8000382

Claim:
A method for estimating phase imbalance for a transmitter and a receiver in a wireless communication system, the method comprising: establishing a local loopback connection between the transmitter and the receiver; measuring a combined phase imbalance introduced by the transmitter and the receiver, wherein measuring the combined phase imbalance comprises measuring a phase imbalance using symbols including tones restricted to a subset of an available spectrum; determining a phase imbalance estimate for the transmitter, the phase imbalance estimate for the transmitter indicating the amount of the combined phase imbalance introduced by the transmitter; storing the phase imbalance estimate for the transmitter on a computer readable medium; determining a phase imbalance estimate for the receiver, the phase imbalance estimate indicating the amount of the combined phase imbalance introduced by the receiver; and storing the phase imbalance estimate for the receiver on the computer readable medium.