Patent attributes
A method comprises capturing a first signal from a first radio chain, and dividing samples of the first signal into a first set of sub-vectors. A second signal is captured from a second radio chain. Samples of the second signal are divided into a second set of sub-vectors according to the determined mapping pattern. A gain difference and phase difference between each sub-vector of the first set and a sub-vector of the second set are estimated, acquiring gain differences and phase differences of the first signal and the second signal. The sub-vector level gain differences are combined to acquire a gain difference between the first signal and the second signal. The sub-vector-level phase differences are combined to acquire a phase difference between the first signal and the second signal. One of the first radio chain and the second radio chain are configured to reduce the gain difference and phase difference.
