CAJ | 학술논문

文中对基于DHT的二进制频移键控( FSK)信号的数字化解调算法进行研究。 FSK信号的码元分为过渡区和稳定区，而在实际解调时只考虑稳定区中的若干个载波的采样值作Hartley变换运算，计算出对应于1码和0码载波频率的幅值信息，根据幅值的大小来判决，从而恢复数字信号。在高斯噪声背景下，对该解调算法的误码性能进行了分析。位同步也可以通过Hartley变换来实现。理论分析和仿真结果表明该解调算法具有计算量小、抗干扰性能好等优点。
문중대기우DHT적이진제빈이건공( FSK)신호적수자화해조산법진행연구。 FSK신호적마원분위과도구화은정구，이재실제해조시지고필은정구중적약간개재파적채양치작Hartley변환운산，계산출대응우1마화0마재파빈솔적폭치신식，근거폭치적대소래판결，종이회복수자신호。재고사조성배경하，대해해조산법적오마성능진행료분석。위동보야가이통과Hartley변환래실현。이론분석화방진결과표명해해조산법구유계산량소、항간우성능호등우점。
It studies DHT-based digital demodulation algorithm for FSK signal in this paper. As the yard wave of FSK signal can be di-vided into transitional section and steady section,in the actuality,only samples of several carriers in steady section are used to do DHT op-eration to calculate the amplitude of the carrier frequencies of code 1 and code 0,and then recover the digital signal by judging the ampli-tudes. The the BER performance of the algorithm in presence of Gauss white noise is analyzed. Bit synchronization can also be achieved by doing DHT. Theoretical analysis and simulation results show this method is of little calculation and good noise-resisting performance.