A Low Complexity DFT Based Channel Estimation Method for OFDM Systems
一种基于DFT的低复杂度虚子载波OFDM信道估计算法

Aimed at the practical OFDM based systems with virtual subcarriers,a low complexity DFT based channel estimation method is proposed.The performance and algorithm complexity of the proposed method are compared with the classic Least Square(LS) and linear minimum mean square error algorithms.The DFT based method can well reduce the noise effect and obtain a large gain compared to LS algorithm.The proposed method has a good tradeoff between performance and complexity,which is promising for practical applications.