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空间分集接收可补偿信道衰落,提出了一种基于幅相联合激励法的连续多阈值神经元反馈神经网络(RNNCMVN)的光基带信号直接盲检测方法。针对多进制相移键控(MPSK)信号的特点,设计了两种连续相位多阈值激励函数形式,并简要讨论了该两类激励函数参数的选择;分别推演基于幅相联合激励法的RNNCMVN光基带信号盲检测方法工作于同步和异步两种模式下的新能量函数及其相关证明。同时针对正交调幅(QAM)信号的特点,分别设计出连续振幅和相位多阈值激励函数形式,最后通过仿真验证了该方法的有效性。
Spatial diversity reception compensates for channel fading, a direct blind detection method of optical baseband signal based on continuous multi-threshold neural network feedback neural network (RNNCMVN) is proposed. According to the characteristics of MPSK signals, two kinds of continuous phase multi-threshold excitation function forms are designed and their parameters are briefly discussed. The RNNCMVN Optical baseband signal blind detection method works in both synchronous and asynchronous modes of new energy function and its related proof. At the same time, according to the characteristics of Quadrature Amplitude Modulation (QAM) signals, the form of continuous amplitude and phase multi-threshold excitation functions are designed respectively. Finally, the effectiveness of this method is verified by simulation.