Patent ID: 8126086

Claim:
A system for determining in-phase and quadrature-phase mismatch in a multiple-input, multiple-output (MIMO) communication architecture, comprising: at least one transmitter coupled to at least one receiver; an in-phase (I) signal, quadrature-phase (Q) signal mismatch element configured to receive i) I and Q signal components over at least one communication channel extending between the at least one transmitter and the at least one receiver, and ii) a signal indicating channel response, the I/Q signal mismatch element also configured to provide a signal representing gain imbalance, a signal representing quadrature error and a signal representing I/Q offset, in which the signal representing gain imbalance and the signal representing quadrature error are generated and used to generate the signal representing I/Q offset; and a channel estimation element configured to receive the I and Q signal components over the at least one communication channel, the channel estimation element also configured to provide the signal indicating channel response to the I/Q signal mismatch element.