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On the baseband representation of a bandpass nonlinearity
Zhou, G.T.; Hua Qian; Lei Ding; Raich, R.;
Signal Processing, IEEE Transactions on [see also Acoustics, Speech, and Signal Processing, IEEE Transactions on]
Volume 53,
Issue 8,
Aug. 2005
Page(s):2953
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2957
Abstract:
Modeling, analysis, and compensation of nonlinearities in the transmitter (the power amplifier, in particular) has attracted a lot of attention recently. Given the same bandpass polynomial or Volterra representation of the nonlinear system, two different baseband formulations have appeared in the literature. The purpose of this correspondence is to examine the discrepancy between the two and to affirm that proper conjugation must be applied in the baseband representation of bandpass nonlinearities. A predistortion linearization test-bed experiment is conducted to illustrate the concepts.
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