TRANSMITTER, WIRELESS COMMUNICATION ELEMENT, AND METHOD FOR SPURIOUS EMISSION CANCELLATION
PURPOSE: A transmission apparatus including a spurious radiation offset function, wireless communication apparatus, and spurious radiation offset method are provided to eliminate spurious radiation including C-IM3 distortion. CONSTITUTION: A digital previous distortion module(203) previously distort...
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Main Authors | , , |
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Format | Patent |
Language | English Korean |
Published |
26.03.2012
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Subjects | |
Online Access | Get full text |
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Summary: | PURPOSE: A transmission apparatus including a spurious radiation offset function, wireless communication apparatus, and spurious radiation offset method are provided to eliminate spurious radiation including C-IM3 distortion. CONSTITUTION: A digital previous distortion module(203) previously distorts a digital base band-pass signal to the reverse phase of a C-IM3 distortion term. The digital previous distortion module offsets previous distortion and C-IM3 distortion. A digital pre-emphasis filter(205) control digital signal which is previously distorted. The digital pre-emphasis filter provides the flat amplitude response of a mixture pass filter. The digital pre-emphasis filter provides a linear phase answer to the mixture pass filter. The mixture filter includes a base band-pass filter and a digital half band-pass filter. |
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Bibliography: | Application Number: KR20110091361 |