On the Design of Jitter Free Symbol Synchronization Lock Detector

Symbol synchronization lock detection plays an important role in the design of wireless communication receivers. This study deals with the problem that the self-noise interference reduces the performances of symbol synchronization lock detection when the signs of adjacent symbols are the same. A novel jitter free symbol lock detection method is proposed. This method introduces the jitter free prefilter to the two samples per symbol detector. By shaping the received signal, baseband signal obtains regular symbol-period-spaced zero-crossings. Thereby, the self-noise caused by mid-symbol signal is reduced. Simulation results demonstrate that the proposed method significantly improves the detection performances of symbol synchronization lock detection by reducing self-noise interference. The structure of the proposed lock detection method is easy to implement and expand. This study has practical meaning in the design of signal receivers.