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该文针对无人机高速率下行数据链通信中存在的码间干扰和多径衰落,在对无人机信道进行建模的基础上,采用了迫零均衡(Zero Forcing,ZF)和最小均方误差均衡(Minimum Mean Square Error,MMSE)两种算法的单载波频域均衡(Single Carrier Frequency Domain Equalization,SC-FDE)技术对此码间干扰和多径衰落进行了抑制;通过仿真得到采用SC-FDE技术使得误码率明显下降,从而验证了在无人机高速率下行数据链通信中,采用SC-FDE技术能有效抑制码间干扰和多径衰落。
Aiming at the intersymbol interference and multipath fading existing in the UAV downlink data link, based on the modeling of the UAV channel, this paper uses the zero forcing (ZF) and the minimum mean Single-carrier Frequency Domain Equalization (SC-FDE), which is based on the Minimum Mean Square Error (MMSE) algorithm, is used to suppress inter-symbol interference and multipath fading. -FDE technology makes the bit error rate significantly decreased, thus verifying that in the UAV downlink data link communications, the use of SC-FDE technology can effectively suppress intersymbol interference and multipath fading.