复杂信道下Link-16波形抗干扰性能分析

摘要

The anti-interference performance of Link-16 waveform signals is discussed,and this would be of great importance for the research of tactical data links.Firstly the barrage noise interference (BNI) model and Nakagami fading model are established,and BER expressions of Link-16 waveform signals under the barrage noise interference and flat Nakagami fading channel also given.Then the DS-MSK demodulation performance of the Link-16 waveform signals under the additive white Gaussian noise (AWGN) channel is discussed.And finally the system performance of the Link-16 single and double pulse over the Nakagami fading channel with the existence of BNI is expounded.Computer simulation indicates that the antiinterference rejection performance of the double-pulse waveform is superior to that of the single-pulse waveform,and this is completely consistent to the theorectic derivation.%研究复杂信道下Link-16波形信号的抗干扰性能,对研究战术数据链的抗干扰能力具有重要意义.因此,建立了阻塞式噪声干扰(Barrage Noise Interference,BNI)模型和Nakagami衰落模型,给出了Link-16波形信号在阻塞式噪声干扰和平坦慢Nakagami衰落信道下的误码率表达式,讨论了AWGN信道下Link-16波形信号的DS-MSK解调解扩性能,阐述了存在阻塞式噪声干扰时Link-16单(双)脉冲波形通过Nakagami衰落信道的系统性能.计算机仿真结果表明,Link-16双脉冲波形的抗干扰性能要优于单脉冲波形,与理论推导一致.