论文部分内容阅读
FM-DCSK,即调频-差分相干混沌相移键控,是一种针对移动通信中的多径环境提出的调制解调方式,它以高频混沌信号作为载波,采用非相干解调,对对抗多径衰落有很好的效果。若将它用于无线通信中,将提高信道利用率,从而获得一定的经济效益。为了进一步提高其抗干扰和抗衰减性能,我们提出了加入信道编码与之结合的算法,发现性能有了大幅度的提高。该技术的提出对进一步推动混沌通信系统的研究和应用有重要意义。
FM-DCSK, that is, FM-DCS, is a modulation and demodulation scheme proposed for multipath environments in mobile communications. It uses high-frequency chaotic signals as carriers and adopts non-coherent demodulation. Multi-path fading has a good effect. If it is used in wireless communications, channel utilization will be improved, so as to obtain certain economic benefits. In order to further improve its anti-jamming and anti-attenuation performance, we propose to join the channel coding algorithm, and found that performance has been greatly improved. The proposed technology is of great significance to further promote the research and application of chaotic communication system.