计算机技术与发展2016，Vol.26Issue(10)：160-164,5.DOI:10.3969/j.issn.1673-629X.2016.10.035
加性乘性噪声改善多元信号检测
Improvement of Multiple Signal Detection by Additive and Multiplicative Noise
摘要
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.关键词
随机共振/多元信号检测/错误检测概率/乘性噪声Key words
stochastic resonance/multiple signal detection/probability of detection error/multiplicative noise分类
信息技术与安全科学引用本文复制引用
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):160-164,5.基金项目
国家自然科学基金资助项目(61179027) （61179027）
江苏省“青蓝工程”基金(QL06212006) （QL06212006）
江苏省高校研究生科研创新计划项目(KYLX150831) （KYLX150831）
