基于自适应反馈信道调制的多信道跳频通信系统异常跳变识别方法研究
Research on abnormal hopping recognition method of multi-channel frequency hopping communication system based on adaptive feedback channel modulation
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摘要: 针对多信道跳频通信系统常受信道跳变的干扰而导致通信信道异常的问题，基于自适应反馈信道调制设计了一种新的多信道跳频通信系统异常跳变识别方法.该方法首先构建系统信道传输模型，结合空间信道均衡方法对其展开输出转换控制，并采用判决反馈调节方法调节其载波调制和波束输出结果，继而建立信道反馈均衡控制模型；然后通过自适应参数调节方法进行系统的均衡设计和参数辨识优化，并利用扩频处理提高信道输出增益，再根据信道差异特征点提取结果识别异常跳变位置信息.仿真结果表明，该方法对多信道跳频通信系统的异常跳变识别准确性较高，应用该方法后通信信道均衡性较好.Abstract: Multi-channel frequency hopping (FH) communication systems are often disturbed by channel hopping, which results in channel anomalies.In order to solve this problem, an adaptive feedback channel modulation method was designed to identify the abnormal hopping of a multi-channel FH communication system. Firstly, the channel model of the multi-channel FH communication system was constructed, and the output conversion control was developed by combining the space channel equalization method, and the carrier modulation and beam output were adjusted by the decision feedback regulation method, then the channel feedback equalization control model of the multi-channel FH communication system was established. Based on this, the adaptive parameter adjustment method was used to carry out the equalization design of the multi-channel FH communication system and the optimized parameter identification, the channel output gain was improved through spread spectrum processing, and then the abnormal hopping position information was identified according to the extracted results of channel difference feature points. The simulation results showed that this method was more accurate in identifying the abnormal hopping of multi-channel FH communication system, and the communication channel equalization was better after the application of this method.
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