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A time domain IQ compensation approach is proposed for wideband application where the IQ imbalance is frequency dependent. The proposed approach relies on known signal such as preamble in orthogonal frequency-division multiplexing (OFDM) signal data frame and radar echoes. Signal correlation property is used for noise elimination and signal frequency spectrum is divided into several sub-bands to deal...
Recently, memory polynomial model is used to predistort power amplifiers with memory effects. Until now, the predistortion architecture using memory polynomial model predistorts the amplitude and phase of the signals simultaneously. This paper describes a new predistortion architecture using memory polynomial model (MPM) - it predistorts AM/AM and AM/PM separately. It turns out that, when compared...
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