LUO Ren-ze, GE Yong-hua, DANG Yu-pu, et al. Timing and Frequency Synchronization Algorithm with Superimposed Weak Power Sequence for OFDM Systems[J]. Acta Electronica Sinica, 2012, 40(2): 412-416.
LUO Ren-ze, GE Yong-hua, DANG Yu-pu, et al. Timing and Frequency Synchronization Algorithm with Superimposed Weak Power Sequence for OFDM Systems[J]. Acta Electronica Sinica, 2012, 40(2): 412-416. DOI: 10.3969/j.issn.0372-2112.2012.02.033.
A novel timing and frequency synchronization method by superimposed sequence with lower power was proposed for OFDM systems.The training sequence
which was constructed and had low/zero autocorrelation and weak energy performance
was superimposed with total energy accounted for only a transmitter total power 4.1 percent on the information symbol.The novel frequency offset estimation range using guard interval is enlarged from 0.5 to 1
while the total frequency offset estimation range is 1/4 bandwidth.Theory and simulation show that the performances of the proposed algorithm are much better than those of the conventional schemes in accuracy and the mean square error.