Impact of Phase Noise on Orthogonal Frequency Division Multiplexing (OFDM) Systems with Correction Algorithms
This paper analyzes the effects of phase noise on OFDM systems, revealing that phase noise induces both Common Phase Error (CPE) and Inter-Carrier Interference (ICI), significantly degrading system performance. To address these issues, we propose a CPE correction method based on the Mean Squared Error (MSE) criterion and an adaptive ICI cancellation technique using the Least Mean Squares (LMS) algorithm, which leverages the dominant interference from adjacent subcarriers. The implementation involves calculating CPE compensation factors through pilot symbol analysis and applying LMS-based adaptive filtering to mitigate adjacent-channel ICI. Simulation results demonstrate that our computationally efficient algorithm substantially enhances OFDM performance.