摘要
本文介绍了针对卫星通信系统的多载波多速率解调系统(MCMRM)的结构。与传统的方法相比,MCMRM由于使用了精确的同步技术,电路规模大大减小。最后,通过实例对多载波信号用MCMRM结构进行了数字分路与解调,仿真结果表明,MCMRM方法可以有效的对多载波信号进行数字分路,且比传统的单载波解调器的误码性能好,误码率非常接近QPSK的理论值。
This paper has described the structure of a multicarrier multirate modem for satellite communication system.The circuit scale be minimized by using accurate synchronization compared to the conventional method. At last, through examples of multicarrier signal shunt and demodulation in MCMRM structure,the simulation results show that MCMRM method can effectively obtain digital shunt of the multicarrier signal,moreover,the BER performance is better than traditional method and very close to that of QPSK theory.
出处
《电子设计工程》
2016年第6期32-35,38,共5页
Electronic Design Engineering
关键词
多载波多速率
数字分路
解调
定时同步
载波同步
multicarrier multirate
digital shunt
demodulation
timing synchronization
carrier synchronization
