相位相干通信系统中，通常采用锁相环路来产生相干参考信号。
In phase-coherent communication system, phase-locked loop is always used to yield coherent reference signal.
预处理滤波器改善了输入与参考之间的相干性，而降低自适应滤波器的阶数则降低了算法运算量。
The pre-treated filter improves the coherence between the input and the desired response, and the decrease in order reduces operations of the algorithm.
研究结果对非相干光反馈与非相干光注入激光混沌同步保密通信系统的设计具有重要参考价值。
The results have significant reference value to design of the chaotic synchronization secure communication system based on incoherent optical feedback and incoherent optical injection.
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