A Novel Dual ICI Cancellation Algorithm Based on Grouped Pilot in OFDM System

This paper considered the LTV model-based ICI cancellation algorithm for OFDM system. Although the dual ICI cancellation algorithm can achieve a better performance in LTV model, the estimation error on pilot subcarriers restricts the improvement of algorithm performance. This paper proposed a grouped pilot-based dual ICI cancellation algorithm. By adopting comb pilot construction, the proposed algorithm can effectively reduce the influence of ICI to pilot.