TD-SCDMA信号的实时捕获及分析

Real-time Capture and Analysis of TD-SCDMA Signals

针对当前各高校开展的TD-SCDMA实验系统复杂、单一和不接近工程实际的缺点,笔者开发了一套新的实验系统。此实验系统利用3G天线捕获实际基站发出的TD-SCDMA信号,输入到频谱分析仪中进行各项指标参数的分析,包括时隙图、频谱图、星座图、复合码域功率以及误码总结等。实验过程简单、生动并接近工程实际,能够给学生更多的发挥空间,提高了高校大型设备的利用率,而且具有较强的可扩展性和灵活性。

The TD-SCDMA experiments carrying out in colleges are complex and unitary, not intuitive and not close to actual engineering, therefore we developed a new experiment system. TD-SCDMA signals from actual base sta- tions are captured using a 3G antena, which are then fed into a spectrum analyzer to evaluate various pmameters, including time slots, spectrum, constellation, comtx^ite code domain power and error summary, etc. The experiment is simpler, vivi- der and closer to actual engineering, and provides students with more room of innovation. It also increases utilization of large equipments in colleges. Furthermore, the new system has robust extensibility and flexibility.