Method for estimating frequency deviation in carrier synchronization of wireless communication system
A wireless communication system, frequency offset estimation technology, applied in the field of frequency offset estimation in wireless communication system carrier synchronization, can solve the problems of increased bit error rate, decreased demodulation and decoding performance, limited accuracy of frequency estimation, etc.
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[0144] The method of the present invention in the simulation is based on the second embodiment in the description;
[0145] Simulation results and analysis:
[0146] (1) Figure 8 and Figure 9 are the normalized frequency offset estimation errors after the frequency offset estimation is performed using the traditional method and the method of the present invention when the signal-to-noise ratio is 9dB and the frequency offset is 36Hz in the AWGN (Gaussian) channel. It can be seen that the residual frequency offset fluctuates violently after frequency offset correction by the traditional method, but after the frequency offset correction by the method in this paper, the fluctuation of the residual frequency offset is effectively suppressed and the fluctuation is relatively stable, but there are still some The residual frequency offset has not been corrected, mainly because the performance of the initial frequency offset estimation of the decoding front-end is poor when the SN...
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