A Detection Algrithm Based on Joint Time and Frequency Offset Estimation for OFDM in HF Communications
Kan Chun-rong①;Wang Ting-chang②
①Institute of Communication Engineering PLA UST, Nanjing 210007, China;②The 63rd Research Institute, PLA General Staff Headquarters, Nanjing 210007 China
Abstract：Against the character of HF channels, this paper presents an OFDM synchronization detection scheme, which uses m sequence to modulate the pilot symbols. Based on joint time and frequency-offset estimation, synchronization detection can be implemented using the correlation peak of the m sequence in low SNR. Theoretical analysis shows the right selection of range for decision threshold. Monte Carlo simulation results show the scheme has good performance with a reliable detection probability and a low false alarm probability under low SNR( - 10dB).
阚春荣; 王庭昌. 基于时频联合估计的短波OFDM的检测算法[J]. 电子与信息学报, 2005, 27(6): 857-860 .
Kan Chun-rong①;Wang Ting-chang②. A Detection Algrithm Based on Joint Time and Frequency Offset Estimation for OFDM in HF Communications. , 2005, 27(6): 857-860 .
2005, Vol. 27 
