Indian Journal of Science and Technology

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Digital pre-distortion techniques are widely used in linearization of RF power amplifiers. In this paper Lookup- table (LUT) type Adaptive Digital pre-Distortion (ADPD) is presented. In this algorithm, an output signal of the Power Amplifier (PA) is used as reference signal. It is used to update the coefficients of the LUT, so that characteristics of the PA, such as temperature dependence, do not have influence on the convergence performances. Simulation results have been presented.

Keywords

Digital Pre-distortion (DPD), Error Vector Magnitude (EVM), Power Amplifier (PA), Look-up-table
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