| 摘要 |
An embodiment of the present invention provides a method and apparatus for frame synchronization, and can reduce the impact of carrier frequency offset, determine the exact time of the frame synchronization， and accurately demodulate the data. A specific solution is that: first getting the received signal of a receiving antenna, then calculating the autocorrelation value of the received signal, and determining the time corresponding to the autocorrelation value of the received signal meeting the first precondition as an initial estimate time, then obtaining frequency offset estimate value according to the initial estimate time, the received signal and the frequency offset estimation algorithm, and compensating the received signal for the frequency offset by using carrier frequency offset estimate value, and then calculating the cross-correlation value and the autocorrelation value of the received signal after the frequency offset compensation, determining the time corresponding to the cross-correlation value and the autocorrelation value of the received signal after frequency offset compensated and meeting the third precondition as the time of frame synchronization, and demodulating data and completing the frame synchronization according to the time of frame synchronization. The embodiment of the present invention is used for frame synchronization. |
