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The detection methods of DSSS/QPSK signal based on the fourth-order moment

机译:基于四阶矩的DSSS / QPSK信号检测方法

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摘要

The higher order statistics theory to the detection of the DSSS/QPSK signal is studied. The detection methods based on the fourth-order moment m{sub}(4x)(0,0,τ) in time domain and in frequency domain are proposed. The simulations results show that the detection performance of the method in frequency domain is better than that of the method in time domain, the detection probability of the method in frequency domain is above 50% at SNR-20dB.
机译:研究了用于DSSS / QPSK信号检测的高阶统计理论。提出了基于时域和频域四阶矩m {sub}(4x)(0,0,τ)的检测方法。仿真结果表明,该方法在频域上的检测性能优于时域方法,在SNR-20dB时,该方法在频域的检测概率大于50%。

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