Implementation of ICI Self-Cancellation Algorithm

This study implements a MATLAB-based simulation comparing three key approaches: standard OFDM systems, ICI self-cancellation methods, and receiver-side ICI cancellation techniques. The core implementation utilizes the ICI self-cancellation algorithm through carefully designed constellation mapping and symmetric subcarrier pairing strategies. The MATLAB code structure includes three main components: OFDM signal generation with cyclic prefix insertion, ICI impairment modeling through frequency offset simulation, and cancellation algorithm implementation using conjugate subcarrier pairing with phase compensation. Performance evaluation metrics incorporate BER calculations and spectral efficiency analysis through Monte Carlo simulations. The algorithm effectively mitigates inter-carrier interference by exploiting correlation between adjacent subcarriers, significantly improving system robustness against frequency synchronization errors. This comparative analysis provides valuable insights for communication system designers to optimize performance and reliability trade-offs in practical implementations.