E_b/n_0的频谱分析仪测量方法  

measuring E_b/n_0 via a spectrum analyzer

作　　者：刘维倩[1] 

机构地区：[1]中国电子科技集团公司第十研究所,成都610036

出　　处：《国外电子测量技术》2010年第5期35-37,共3页Foreign Electronic Measurement Technology

摘　　要：E_b/n_0是衡量接收机性能的重要指标之一,但难以直接测量。在分析E_b/n_0与S/N之间关系的基础上,推导出二者的数学换算式,从而得出可通过测量信号功率S和噪声功率N,再经计算得到E_n/n_0的理论依据。详细阐述了实际使用频谱分析仪进行S和N测量的方法和具体操作步骤,对该测量方法进行了实验验证并简要分析了测量不确定度来源。Eb/n0 is a critical specification to evaluate a receiver＇s performance, however,it is difficult to measure directly. In this paper, a formula between Eb/n0 and S/N is concluded based on the analysis of their correlation, then Eb/n0 can be calculated by measured signal power S and noise power N. This paper also details the methods and procedure to measure S and N with spectrum analyzer, verifies this measurement method experimentally, and briefs the source of measurement uncertainties.

关 键 词：EB/N0 S/N 功率 频谱分析仪 

分 类 号：TN911.4[电子电信—通信与信息系统]