Transmission signal synchronization processing method, system, storage medium, program, and terminal

Abstract

The invention belongs to the technical field of signal processing, and discloses a sending signal synchronous processing method and system, a storage medium, a program and a terminal. The method comprises the steps: obtaining a conjugate symmetry training sequence composed of three parts through a generated ZC sequence; loading the training sequence to the front of an FBMC / OQAM system symbol of atransmitting end for transmission, performing timing synchronization processing by utilizing the strong autocorrelation of an improved local sequence and a part of sequences of a receiving end, and detecting and finding the position of a synchronization frame header through peak search; and performing frequency offset estimation operation by utilizing the training sequence, and compensating frequency offset of data by utilizing the estimated angle value through solving an average frequency offset difference value between the two sections of sequences. According to the method, the precision ofsynchronous operation is improved, the receiver can accurately extract effective signals from the received signals under the condition that the communication channel environment is severe, and phase and frequency deflection generated by data symbols, reaching the receiver through wireless transmission, of the transmitted signals is successfully compensated.

Description

technical field [0001] The invention belongs to the technical field of signal processing, and in particular relates to a transmission signal synchronization processing method, system, storage medium, program, and terminal. Background technique [0002] At present, the signal is transmitted in the channel, and the fading problem and in-band interference caused by the environment affect the synchronization problem of the receiving end most directly. FFT operation at the wrong position will only reduce the overall quality of the signal, and only accurate synchronization After sending out the signal, the next series of demodulation and decoding operations are meaningful. Therefore, synchronization technology is the premise of the processing flow at the receiving end. Synchronization technology not only occupies an important position in the FBMC system, but also is essential in any wireless communication field. , the emergence of synchronization technology ensures the effectivene...

AI Technical Summary

Problems solved by technology

[0007] If the timing synchronization position judgment is wrong, whether it is judging the arrival of the data frame too early or judging the arrival of the data frame later, it will lead to deviations in the extraction of the entire data frame, causing the receiving end to lose the entire data information, so that the subsequent processing of the receiving end has no effect. Meaning, and the error of timing synchronization makes the start position of the data symbol wrong when performing FFT, resulting in intersymbol interference between subcarriers

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