Blind Digital Post-Distortion Technique for Nonlinear Receiver

Paper i proceeding, 2025

In modern communication systems, nonlinearities introduced by the low noise amplifier (LNA) can significantly degrade the accuracy of desired signal acquisition. This paper presents a novel blind digital post-distortion technique that operates at the receiver to mitigate the distortions caused by these nonlinearities without requiring prior knowledge of the input signal. The proposed method identifies and compensates for the nonlinear effects introduced by the LNA, applying a blind post-distortion algorithm to restore the integrity of the desired signal. Simulation results demonstrate that the technique effectively cancels out distortions. A detailed comparison with conventional techniques, those that rely on knowledge of the input signal, highlights the effectiveness and robustness of the proposed approach. The results confirm that this blind post-distortion method offers a substantial improvement in handling nonlinearities compared to conventional method.