Blind Recognition of Frame Synchronization in Time-Code Domain
Mingchao Jin, Shitian Zhang, Xiandeng He, Dongxiao Quan, Jiazheng Wei · 2023
In the scenarios of non-cooperative burst communication, the receiver needs to use blind recognition algorithms of frame synchronization(BR-FS) to complete the information extraction, which is of great significance for the analysis of intercepted signals. However, the traditional BR-FS only carries out multiple sliding correlation with different lengths in code domain, which results in excessive computation. Therefore, this paper proposes a BR-FS based on joint detection in time domain and code domain(time-code domain). Firstly, the burst signal is detected by the high-order cumulants in time domain, then the analysis matrix and column cumulant are constructed and caculated in code domain, and the frame synchronization is estimated and verified according to the features of frame synchronization code. Simulation results show that the synchronization detection probability of the proposed BR-FS in time-code domain reach more than 95% when SNR=1dB. This algorithm has less computation compared with traditional algorithms.