摘要
16QAM是一种高效的数字调制方式,频带利用率高,应用广泛。单音干扰是一种常见的干扰方式,简单易实现。针对单音干扰对16QAM信号解调性能的影响进行研究,建立了针对16QAM解调器的单音干扰模型,分析了单音信号的参数(包括幅度及频率)对解调器性能的影响,得出了关于干信比以及单音信号频偏的变化对系统干扰效果影响的结论,并给出了系统的误码率曲线图以及不同频偏时的星座图。
16QAM is a widely used and highly efficient digital modulation method. Signal tone jamming is a common method of jamming which is easy to implement.The paper studies the signal tone jamming’ s effect on the performance of 16QAM demodulation, establishes a signal tone jamming model for 16QAM demodulator,analyses the influence of signal tone parameters ( including amplitude and frequency) on the performance of demodulator,and concludes the influence of JSR and frequency on the jamming effect of the sys.tem.It also gives the BER curve diagram of the system and the constellation diagrams of different frequency deviations.
出处
《无线电工程》
2015年第1期30-32,64,共4页
Radio Engineering
基金
国家部委基金资助项目
关键词
16QAM
单音干扰
干信比
干扰频率
16QAM
signal tone jamming
jamming to signal ratio
jamming frequency
作者简介
于少伟女,(1990-),研究生。主要研究方向:信号与信息处理。
陈卫东男,(1968-),研究员。主要研究方向:通信信号处理、软件无线电。