摘要
通过对电磁波极化特性的分析,提出基于极化调制的卫星通信体制,并针对极化调制特点设计出相应的收发信机,推导了高斯信道下极化调制的误符号率理论公式,并使用蒙特卡洛仿真进行了验证。同时,证明了极化调制不受高功放的非线性影响且不需要严格载波同步,在无精确载波同步的条件下极化调制误符号率性能优于DPSK非相干解调的性能,得出极化调制更适用于高频窄带或者高动态等卫星通信系统。
Based on the analysis of electromagnetic wave polarization characteristics,the polarization modulation( PM) scheme is proposed and the PM transceiver is designed in the satellite communication in this paper. The symbol error rate of the polarization modulation is deduced and verified by the Monte Carlo simulation in the AWGN channel. It is proved that the polarization modulation does not require accurate carrier synchronization and transmit signals are immune to nonlinearity of the high power amplifier. Comparing with the DPSK non-coherent demodulation,PM scheme is more suitable in no carrier recovery systems,such as high frequency narrow-band or high dynamic satellite communication.
出处
《微型机与应用》
2017年第11期66-70,共5页
Microcomputer & Its Applications
关键词
极化特性
极化调制
DPSK
载波不同步
卫星通信
polarization feature
polarization modulation
DPSK
no carrier synchronization
satellite communication
