Thales

Université De Nantes

Bruno Feuvrie

Georges Peyresoubes Peyresoubes

Mazen Abi Hussein

Yide Wang

A linearization device for a power amplifier using adaptive digital baseband predistortion includes a pre-inverse block receiving a complex discretized input signal {tilde over (x)}(n) and restoring a complex predistorted signal {tilde over (x)}(n) at the power amplifier input. The pre-inverse block includes a first module and a second module receiving the modulus of the complex input signal |{tilde over (x)}(n)| at the input whose value is included in an amplitude domain varying between two values 0 and A, the amplitude domain being split into a plurality of segments, the first module associating with each value of the complex input signal modulus |{tilde over (x)}(n)| contained in a given segment, a set of several parameters defining a model implemented in the second module via a function Fj, the second module restoring a value F(|{tilde over (x)}(n)|), the complex predistorted signal resulting from multiplying the complex input signal {tilde over (x)}(n) by the value F(|{tilde over (x)}(n)|).

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Nantes, France

Bruno Feuvrie