[1]王友国[][],潘慧[],刘健[]. 加性乘性噪声改善多元信号检测[J].计算机技术与发展,2016,26(10):160-164.
　WANG You-guo[][],PAN Hui[],LIU Jian[]. Improvement of Multiple Signal Detection by Additive and Multiplicative Noise[J].,2016,26(10):160-164.
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 加性乘性噪声改善多元信号检测()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
26
期数:
2016年10期
页码:
160-164
栏目:
应用开发研究
出版日期:
2016-10-10

文章信息/Info

Title:
 Improvement of Multiple Signal Detection by Additive and Multiplicative Noise
文章编号:
1673-629X（2016)10-0160-05
作者:
 王友国[1][2];  潘慧[2] ; 刘健[2]
1. 江苏省物联网技术与应用协同创新中心；2. 南京邮电大学 通信与信息工程学院
Author(s):
 WANG You-guo[1][2];  PAN Hui[2] ; LIU Jian[2]
关键词:
 ; 随机共振; 多元信号检测; 错误检测概率; 乘性噪声
Keywords:
 ; stochastic resonance; multiple signal detection; probability of detection error; multiplicative noise
分类号:
TP39
文献标志码:
A
摘要:
 基于最大后验概率准则，以错误检测概率为测度，研究了加性噪声和乘性噪声共同作用下信号检测的问题。在乘性噪声强度不变的情况下，当信号是阈上时，错误检测概率随着加性高斯噪声强度的增加而单调增加，噪声总是干扰信号检测；当信号是阈下时，错误检测概率随着加性高斯噪声强度的增加而逐渐降低至一个最小值后再缓慢增加，适量的噪声有利于多元信号检测，即随机共振存在。在加性高斯噪声强度不变的情况下，当信号是阈上时，错误检测概率随着乘性噪声强度的增加而单调增加，噪声总是恶化信号检测性能；当信号是阈下时，错误检测概率随着乘性噪声强度的增加而单调下降并最终趋于稳定。这些结论有助于噪声改善多元信号检测。
Abstract:
 Stochastic Resonance ( SR) is discussed in nonlinear multiple signal detection for additive noise and multiplicative noise based on the Maximum Posterior Probability ( MAP) criterion in the probability of detection error measure. In the case that multiplicative noise intensity is fixed,when the signal is suprathreshold,the probability of detection error increases monotonously with the additive Gaussian noise intensity and noise always interfere signal detection;when the signal is subthreshold,with the increase of additive Gaussian noise in-tensity,the probability of detection error gradually reduces to a minimum value and then increases slowly and the noise can improve the signal detection,i. e. ,SR exists. In the case that additive noise intensity is fixed,when the signal is suprathreshold,the probability of de-tection error increases monotonously with the multiplicative noise intensity which indicates that noise is always deteriorate signal detection performance;when the signal is subthreshold,the probability of detection error decreases monotonously and finally tends to a steady value with the increasing of multiplicative noise intensity. These conclusions can be able to be helpful for noise improving multiple signal detec-tion.

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更新日期/Last Update: 2016-11-29