H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/62 (2006.01) H04B 1/30 (2006.01) H04L 27/36 (2006.01)
Patent
CA 2407960
A method for self-calibrating a vector modulator is disclosed, including the step of pre-distortion coefficients in dependence upon an in-phase signal, a quadrature signal, and an output envelope of an RF signal, and further comprising the steps of transforming a value representative of an output envelope represented in a nonlinear domain into a value representative of the output envelope represented in a linear domain, determining a parameter vector x as a solution of a linear equation within the linear domain, and determining the pre-distortion coefficients from the parameter vector x. Further described is a compensating quadrature modulator for self calibrating a vector modulation process, the compensating quadrature modulator comprising an I-signal transmit chain for pre-distorting and transmitting an in-phase signal, a Q-signal transmit chain for pre-distorting and transmitting a quadrature signal, as well as a digital signal processor coupled to the I- and Q- signal transmit chains, and providing pre-distortion coefficients. 1
Caron Mario
Huang Xinping
Caron Mario
Freedman & Associates
Her Majesty In Right Of Canada As Represented By The Minister Of
Huang Xinping
LandOfFree
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