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