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The look-up-table based digital adaptive predistortion (DAPD-LUT) is a low-cost and popular power amplifier (PA) linearization scheme. Most existing DAPD-LUT schemes adopt uniform spacing in indexing its LUT entries, completely regardless of the system state information (SSI): 1) the PA characteristics and 2) the input signal statistics, and are therefore sub-optimum. Some other existing DAPD-LUT...
Digital predistortion at baseband is an efficient and low-cost method for the linearization of a power amplifier (PA) in a wireless system employing a nonconstant-envelop modulation scheme, so as to reduce the adjacent channel interference. The polynomial and the look-up table (LUT) predistortion schemes are two commonly used approaches. However, in each of the two approaches, to reach a satisfactory...
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