摘要
提出了一种基于FFT的星上多路FDMA/FSK信号解调算法。首先分析了该算法的基本原理,证明了其性能与FSK信号理想非相干解调性能相同,同时提出了利用FFT进行频差估计的算法;对系统进行了性能仿真,仿真结果与理论分析一致;该算法实现简单、复杂度低,适合星上处理。
An algorithm was proposed to demodulate multi-channel FDMA/FSK signals based on fast Fourier transform（FFT）. The algorithm was analysed in detail theoretically, and it was proved that the performance is the same as that of FSK with ideal non-coherent detection, and it also presented a method of estimating the frequency offset using FFT. Then the system was simulated, which validates the analysis. The algorithm is easy to be realized and is suitable for processing on board.
出处
《通信学报》
EI
CSCD
北大核心
2006年第8期82-86,共5页
Journal on Communications
基金
国防预研基金项目(51421010504JB3801)~~
关键词
快速傅立叶变换:多路FSK解调:频差估计
fast Fourier transform
demodulation of multi-channel FSK signals
estimation of the frequency offset
