一种门限自适应的独特码检测方法  

Adaptive Threshold Method for UW Detection

作　　者：袁文刚[1] 吴团锋[2] 朱爱民[3] 

机构地区：[1]解放军理工大学通信工程学院研究生1队,江苏南京210007 [2]解放军理工大学通信工程学院卫星通信系 [3]解放军理工大学通信工程学院研究生4队

出　　处：《军事通信技术》2006年第2期47-50,共4页Journal of Military Communications Technology

摘　　要：文中提出一种简单、实用的门限自适应的独特码检测方法。在对判决量统计特性分析的基础上,采用最大似然估计准则估计出等效高斯白噪声方差,由此,可以得到判决门限的估计值。最后给出了该方法基于GM-SK信号的一种降低运算量的实现方案。对文中的门限自适应的独特码检测方法进行了计算机仿真,结果表明,该方法能明显提高独特码的检测概率,从而说明其有效性,而且,该方法实现非常简单,很适合在工程中应用。A simple and practical adaptive threshold method for UW detection was propsed. After analyzing the statistical property of the decision variable, the maximum likelihood criterion was used to estimate the variance of the Gaussian noise. Thus, the decision threshold was obtained. A reduced-complexity realization scheme was also proposed for the method based on GMSK. The result of the detection method using adaptive threshold obtained by computer simulation can obviously improve the probability of UW, which shows that the proposed method is useful. Furthermore, the method is very simple and fast, so it is very fit for practical application.

关 键 词：独特码检测 判决门限 最大似然估计 

分 类 号：TN911.2[电子电信—通信与信息系统]