Abstract：A novel frequency offset estimation algorithm for Orthogonal Frequency Division Multiplexing(OFDM) signals transmitted over frequency-selective channels is analyzed. The algorithm is discussed with channel zeros and arbitrarily assignment of null-subcarriers. The effect of distribution of null subcarriers and channel zeros is discussed. An adaptive assignment of null-subcarriers scheme is proposed. The proposed algorithm performs significantly better than the already existing methods.
吴 杰; 李建东. 使用空载波的OFDM频率同步方法分析与改进[J]. 电子与信息学报, 2006, 28(10): 1854-1857 .
Wu Jie; Li Jian-dong. Frequency Synchronization in OFDM Systems Using Null Subcarriers: Analysis and Improvement. , 2006, 28(10): 1854-1857 .
2006, Vol. 28 
