CAJ | 학술논문

文中提出一种基于高阶累积量识别多种数字调制信号的算法。首先推导计算各信号的八阶累积量，从二、八阶累积量中提取一个特征参数，实现以更少参数识别更多信号的目的；然后，为提高MFSK的识别率，从微分后MFSK信号的四、六阶累积量中提取一个特征参数完成识别。仿真结果显示，通过利用这两个参数可以实现2 ASK/BPSK、4 ASK、8 ASK、QPSK、8 PSK、2 FSK、4 FSK、8 FSK、16 QAM、64 QAM等多种数字调制信号的识别。
문중제출일충기우고계루적량식별다충수자조제신호적산법。수선추도계산각신호적팔계루적량，종이、팔계루적량중제취일개특정삼수，실현이경소삼수식별경다신호적목적；연후，위제고MFSK적식별솔，종미분후MFSK신호적사、륙계루적량중제취일개특정삼수완성식별。방진결과현시，통과이용저량개삼수가이실현2 ASK/BPSK、4 ASK、8 ASK、QPSK、8 PSK、2 FSK、4 FSK、8 FSK、16 QAM、64 QAM등다충수자조제신호적식별。
An algorithm based on HOC( high-order cumulants) for recognizing multiple digital modulation signals is proposed. The eight-order cumulants are firstly deduced and calculated, and one feature param-eter extracted from two-order and eight-order cumulants is used to recognize more signals with less param-eter. Then, in order to increase the recognition rate of MFSK signals, another feature parameter is picked up from four-order and six-order cumulants of MFSK signal. Simulation shows that numerous digital mod-ulation signals such as 2ASK/BPSK, 4ASK, 8ASK, QPSK, 8PSK, 2FSK, 4FSK, 8FSK, 16QAM, 64QAM can be identified by these two parameters.