Research on Carrier Synchronization of QPSK Based on Simulink

• 作者: Zhaoxu Zhang Zheng Dou Zhigang Li
• 来源期刊: 通讯、网络与系统学国际期刊(英文)
• 学科: 工学
• 关键词: CARRIER Synchronization QUATERNARY LOOSE TAIL Loop SIMULINK Digital Communication
• 年，卷（期）: 2017,（8）
• 页码范围: 227-235
• 页数: 9页
• 分类号: TN91

摘要

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.