Open AccessAn Improved Symbol Timing Synchronization Algorithm in FBMC Systems
Author(s) -
Ruyu Yang,
Zhiyong Luo
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/563/5/052008
Subject(s) - synchronization (alternating current) , frequency offset , offset (computer science) , algorithm , computer science , carrier frequency offset , sequence (biology) , compensation (psychology) , utc offset , correlation , real time computing , orthogonal frequency division multiplexing , mathematics , telecommunications , channel (broadcasting) , psychology , geometry , biology , psychoanalysis , genetics , programming language
A novel symbol timing synchronization algorithm by iterative method is proposed for FBMC / OQAM systems. In the iterative process, different methods are used for rough timing synchronization and fine timing synchronization. Firstly, the ZC (Zadoff-Chu) sequence delay correlation is used to estimate the coarse timing by cross-correlation. After the coarse timing synchronization compensation, the auto-correlation is used to estimate the carrier frequency offset, so that better frequency offset estimation performance can be obtained. Then, the estimated frequency offset is subjected to sequence compensation, and finally, the fine symbol timing synchronization is performed using the compensated sequence. Compared with other algorithms, it can be concluded that the proposed algorithm can obtain high precision of timing accuracy when there is frequency offset in the system.