Maximum A Posteriori-based frame synchronization algorithm
Tang Kun · Journal of Tsinghua University(Science and Technology) · 2003
The transmission efficiency of digital co mmunication links with high bit error rates and high slip rates was enhanced by the Maximum A Posteriori-based frame synchronization algorithm. The algorithm u ses the a priori knowledge of the slipping and channel errors, as well as the c orrelation of adjacent synchronization codes to improve the synchronization. Sim ulation results showed that the algorithm outperforms the traditional Maximum Li kelihood algorithm. The missing synchronization rate was less than 5×10-5 even when the bit error rate was as high as 0.05 and the slip rate was as high as 10-8. Moreover, the algorithm can be easily extended to the synchroniz ation of variable-length frames or the demultiplexing of variable-length packe ts.