The one - dimension effective fpk equation of colored noise serves as our starting point to evaluate the effect of noise color on communication system design . the theory of ber versus input snr per bit is developed and a new procedure to determine the system parameters that influence the minimum ber is proposed . it is shown that the communication system ' s performance is related to the turnable system parameters as well as the noise correlation time 在指数相关高期色噪声情况下,本文以一维有效色噪声fpk方程作为研究的出发点,理论分析了限带高斯色噪声信道中脉冲幅值调制数字信号传输的误码性能,给出了非线性接收器的接收性能曲线,充分体现了噪声相关时间的影响。
The text compares experiment data with the selected theory direction fig and modifies the equal value and standard difference of each segment i n the se i ected wave w i dth d i r ect i on f i g by us i ng the re i at i ve i y between the statistical equal value and standard difference , then makes use of the controls the correlation time to real ize the signal undulate 通过实验数据与选定的理论方向图的对比分析,利用统计出的均值和标准差的相对量,对给定波束宽度的方向图每段的均值和标准差进行修正。然后利用相关特性,通过控制相关时间,以达到能够控制信号起伏的目的。
When the two - dimensional decoupling theory is applied to a single - mode laser system , it is shown that there is relatively large fluctuation in the phase when the laser undergoes from thermal light to coherent light . it is shown that increasing the noise correlation time t can also reduce the fluctuation in the phase of the laser light 将二维退耦理论应用到单模染料激光系统中时,我们还发现,当系统运行在从热光场到相干光场的过渡过程中时,系统的位相存在相对较大的涨落,增加噪声关联时间可以抑制激光场的位相涨落。
It is shown that the increase of noise correlation time can reduce the fluctuation in the system near threshold when the noise coupling coefficient is positive . when the coupling is negative , the increase of noise sorrelation time r can enhance the fluctuation near threshold 结果表明,当噪声之间的耦合系数大于零时,噪声相关时间的增加可抑制系统在阈值附近的涨落;而当噪声之间的耦合系数小于零时,噪声相关时间的增加则加强系统在阈值附近的涨落。