无人机通信中的非对称物理层网络编码研究

Asymmetric physical-layer network coding over UAV communication

物理层网络编码可以提高无线通信系统的性能。针对无人机组网通信的环境特点,建立了无人机组网通信中的非对称双向中继信道模型,研究了该模型中的物理层网络编码,提出了非对称多阶相移键控物理层网络编码方案,推导出该方案的中断概率、误码率等无人机组网通信系统的主要性能指标的理论表达式。通过实验,验证了所提出方案及其理论分析的正确性,分析了各种非对称相移键控调制方式下的系统性能,为物理层网络编码在无人机组网通信中的设计以及性能评估提供了理论依据。

In this paper, asymmetric two-way relay channel model for unmanned aerial vehicle was established according to the characteristics of the environment of unmanned aerial vehicle network communication. An asymmetric multistage phase shift keying physical-layer network coding scheme was proposed by the study in physical layer network coding for the model above, furthermore, the interrupt probability and the bit error rate of the scheme is deduced as theoretical expression. Otherwise, the proposed scheme was verified by experiments, and various asymmetric phase shift keying modulation modes of system performance were analyzed through the experiments. It can provide theory basis for design and performance evaluation for the physical-layer network coding in unmanned aerial vehicle network communication.