Abstract
In this paper,a new digital predistortion (DPD) approach is presented for linearization of power amplifies wide-band orthogonal frequency division multiplexing (OFDM) signals using a QRD-RLS method. The proposed DPD technique employs the improved QR decomposition of input OFDM signals' matrix and can significantly improve the error magnitude of vector (EMV) and performance to offset the nonlinear distortion of RF PAs. In addition, the proposed DPD approach provide a less complex and faster speed linearization system compared with LMS algorithm.
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