Abstract
This paper analyzes properties of Single-Carrier Frequency Domain Equilibrium (SC-FDE) signal’s cyclic autocorrelation section. The relationship between cyclic autocorrelation, useful signal length, cyclic prefix length is studied. The blind estimation algorithm is proposed for the useful signal length and cyclic prefix length without prior information. According to zero point symmetry property and the relationship between cyclic prefix length and spectral line, the area of spectral peak search is limited. So that the length of cyclic prefix and the number of cyclic prefix symbols are estimated. Simulation results show that the algorithm can improve the estimation accuracy and have better estimation performance at low signal-to-noise ratio.
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