Signal detection method for underwater acoustic FBMC system
A signal detection and underwater acoustic technology, applied in baseband systems, transmission systems, multi-frequency code systems, etc., can solve the problems of difficult to achieve Doppler compensation, reduce spectral efficiency, slow sound speed, etc., and achieve Doppler stability. , the effect of reducing matrix latitude and complexity
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[0050] In order to make the technical solutions and advantages of the present invention clearer, the following will further describe this aspect in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific implementation methods described here are only used to explain the present invention, and are not intended to limit the present invention, especially the selection of parameters is only for example.
[0051] refer to figure 1 and Figure 6 , describe a kind of signal detection method that is used for underwater acoustic FBMC system provided by the present invention, the FBMC data frame in the underwater acoustic FBMC system is made up of a pair of hyperbolic frequency modulation (HFM) synchronous signal, some guard intervals and some data blocks , and the method includes the following steps:
[0052] (1) Signal synchronization method. Using the cross-correlation method, a group of positive and negative frequency-modulat...
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