摘要
GSM信号作为一种复杂的通信信号,其测量意义很大。文中利用AgilentE4438C矢量信号发生器、E4404B频谱分析仪、GBIB总线搭建GSM测量网络,通过对GSM信号时域和频域的测量和分析,较全面地研究了其载波特性和频谱,更加深入地掌握了GSM信号的各种参数,验证了GSM信号采用GMSK的调制方式的原因,同时为今后GSM移动终端测试系统化、自动化提供了一定的理论依据。
As a complicated communication signal GSM signal is of great measurement significance. By building up the GSM measurement network by Agilent E4438C vector signal generator, E4404B spectrum analyzer and GBIB bus, and based on the measurement and analysis of time and frequency domains of GSM signal, the carrier characteristics and frequency of GSM signal are comprehensively studied. All this in helpful in grasping various parameters of GSM signal. It also proves the correctness in adopting the GMSK modulation method in GSM system, and thus provides a theoretical foundation for systematic and automatic measurement of GSM mobile terminal.
出处
《信息安全与通信保密》
2009年第10期64-67,共4页
Information Security and Communications Privacy
关键词
GSM信号
时域
频域
测量
GSM signal
time domain
frequency domain
measurement
