Frequency synchronization method based on pre-correction of sending terminal
A frequency synchronization and frequency technology, applied in the field of OFDM synchronization, can solve the problem of high hardware complexity of the receiver, and achieve the effect of simplifying the hardware complexity and improving the transmission efficiency.
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[0066] The implementation method of this patent under a specific OFDM configuration is given below. It should be noted that the parameters in the following examples do not affect the generality of this patent.
[0067] This implementation method adopts the simulation tool cossap, and sets the OFDM useful symbol length to N=1024.
[0068] 1. Origin:
[0069] The frequency offset is estimated by using the guided frequency offset estimation method The modulated data is formed into an OFDM symbol with a length of 1024, and after IFFT transformation, a cyclic prefix with a length of 216 is added to each OFDM original symbol to obtain data without frequency offset Then use the frequency offset The frequency offset compensation method for data without frequency offset Perform compensation and transmit the compensated signal.
[0070] Second, the receiving end
[0071] After receiving the signal, the receiving end performs time synchronization and removes the cyclic prefix a...
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