LFM interference suppression in OFDM systems

A new algorithm for suppression linear frequency modulation (LFM) interference is proposed in orthogonal frequency division multiplexing (OFDM) system. The algorithm includes estimation of interference signal and suppression after reconstruction of the signal. At the process of estimation, the whole operation use the DFT cells in OFDM system. The result shows that the algorithm has a good performance, and compared with other methods, it greatly reduces the complexity of OFDM systems.