TITLE:
Research on Carrier Synchronization of QPSK Based on Simulink
AUTHORS:
Zhaoxu Zhang, Zhigang Li, Zheng Dou
KEYWORDS:
Carrier Synchronization, Quaternary Loose Tail Loop, Simulink, Digital Communication
JOURNAL NAME:
International Journal of Communications, Network and System Sciences,
Vol.10 No.8B,
August
14,
2017
ABSTRACT: As an important part of the communication system, synchronization technology is a communication system to run the correct protection, has been a hot topic in communication systems research. Four-phase phase shift keying (QPSK) circuit structure is relatively simple, and has a good band utilization, in the modern communication has a wide range of applications. Corresponding research on carrier synchronization for QPSK coherent demodulation is carried out. By comparing several carrier recovery loops, The quaternary loose tail loop is selected as carrier recovery loop. First of all, the core part of the digital phase-locked loop analysis and implementation, and finally through the tool Simulink to complete the realization of the system.