短波信道特征参数对通信误码率影响的试验分析

介绍了一种融短波通信与电离层斜向探测于一体的联合试验平台,该平台信道探测与通信同时进行,共用一套硬件设备,克服了设备不匹配及探测信道参量失效等问题,并基于该平台实录数据提取了通信误码率及信道特征参量包括信噪比、衰落深度、衰落率、多径扩展、各模式信号幅度、群距离、主模式相位、多普勒频移及多普勒扩展等,统计分析了各信道参量对通信误码率的影响,得出了一些有意义的结论。

Experimental study on the impact of HF channel characteristic parameters on communication error rate

A test platform combined HF communication with ionospheric oblique sounding is introduced,with which the ionosphere channel sounding and communication is carried out synchronously using the same hardware equipment.By this way,the problem of equipment mismatch and no real-time channel parameters could be solved.Based on the experimental data measured by this platform the communication bit error ratio(BER) and the channel characteristic parameters,including signal to noise ratio(SNR),fading depth,fading rate,mulitipath spread,signal strength,group distance,the phase of major-mode,Doppler shift and Doppler spread,are extracted.The impact of the channel characteristic parameters on the communication BER is statistically analyzed.Significant conclusions are proposed in the end of this paper.