Abstract: In order to solve the short-wave burst communications carrier synchronization, this paper proposes a low-complexity frequency offset estimation algorithm. It makes the frequency offset of received signal with cycle of law through phase folding phenomenon. In order to reduce algorithm complexity and realize fast synchronization, it can avoid the traditional autocorrelation calculation and discrete Fourier transform by estimating deviation with periodic law. Matlab simulation result shows that this algorithm has the characteristics of high estimation precision, wide capture range and low computational complexity. It is suitable for emergency communication frequency offset estimation.
frequency offset estimation,