SNCK通信系统解调方案及性能分析

为了进一步完善SNCK无线通信系统,针对SNCK调制技术的实现模型,提出了SNCK信号的相干解调方案和Fr FT非相干解调方案.通过理论推导和MATLAB软件仿真分析,对两种不同解调方案下基于SNCK调制的无线通信系统的技术性能进行了对比.实验结果表明,相干解调技术在高斯白噪声信道下的误码率性能优于非相干解调技术,但非相干解调技术的信道适应能力要优于相干解调技术,并且这两种解调方案均具有良好的多普勒频移抑制能力和一定程度的抗多径衰落能力,可应用于高速率运动场景下的无线通信系统.

Demodulation scheme and performance analysis for SNCK communication system

In order to further improve the SNCK wireless communication system, both coherent demodulation and FrFT non coherent demodulation schemes for SNCK signals were proposed for the implementation model of SNCK modulation technology. Through the theoretical derivation and the simulation analysis with MATLAB software, the technical performance of the two different demodulation schemes for the wireless communication system based on SNCK modulation was compared. The experimental results show that the bit error rate performance of the coherent demodulation technology under the white Gaussian noise channel is better than that of the non coherent demodulation technology. However, the non coherent demodulation technology has a better channel adaptability than the coherent demodulation technology. Besides, both demodulation schemes have a good inhibition ability of Doppler frequency shift and a certain capability of anti multipath fading, and can be applied in the wireless communication system under high speed motion scenarios.