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In this paper, we focus on the digital predistortion for the linearization of power amplifiers (PAs) with intrinsic hard nonlinearities, such as Doherty PAs, envelope tracking (ET) PAs widely explored in the third generation (3G) communication systems. Conventional Volterra-series-based predistortion with high degree nonlinearities suffers from the difficulty of real-time implement and the problem...
In this paper, we focus on the 2D LUT (2-dimension look-up table) techniques for the mitigation of HPAs' (high power amplifiers') memory effects when transmitting WCDMA wideband signal. On the basis of the previous method, an improved two-dimensional LUT indexing method for HPA predistortion with memory is proposed. Simulation and experimental results show that the proposed method has more effective...
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