摘要
研究了关联白噪声对具有偏置信号调制噪声的线性模型的信噪比的影响．通过计算噪声的指数形式 的积分，推导出了一阶矩、相关函数和信噪比的精确解析表达式，并且发现加性噪声能够增强信噪比，而乘 性噪声使信噪比减小．噪声之间的关联性能够使信噪比增大，增强输出的信号强度．该结果可应用于光通信 系统，对改善输出信号的质量有应用价值．
This paper investigated the effects of correlated noises on the signal-to-noise ratio in a linear system with bias signal-modulated noise, By calculating the exponential of an integral of the noise, we obtained the expressions of the first moment, the correlated function and the signal-to-noise ratio. The curves of signal-to- noise ratio indicate that the additive noise can strengthen the signal-to-noise ratio while the multiplicative noise decreases the signal-to-noise ratio, and the correlation between the additive and multiplicative noise can increase the signal-to-noise ratio.
出处
《动力学与控制学报》
2005年第3期32-35,共4页
Journal of Dynamics and Control
基金
国家自然科学基金(10472091和10332030)
陕西自然科学基金(2003A03)
