便携式LTE-R测试设备设计及性能分析

Design and Performance Analysis of Portable LTE-R Test Equipment

针对LTE-R专用测试仪器体积大、可操作性和便携性差、需要车载供电等问题,利用软件无线电技术设计一款便携式LTE-R测试设备。通过混频电路、射频开关电路、高速ADC采样电路和ARM控制显示系统,实现从射频信号预处理、数据采集、传输到显示、存储。该便携式LTE-R测试设备结合软件无线电技术和嵌入式系统技术,最终实现了平板电脑尺寸的便携效果,具有良好的可操作性及便携性。经朔黄线LTE-R覆盖测试分析和SINR测试统计分析证明,该便携式LTE-R测试设备满足实际测量需要,有效提高了现场施工测量效率。

According to the problem of large volume, poor operability and portability, requiring vehicle power supply of theLTE-R specific testing instrument, a portable LTE-R testing equipment using software radio technology was designed, which realizedRF signal pre-processing, data acquisition, transmission, storage and display with the mixer circuit, RF switch circuit, high-speedADC sampling circuit and ARM control and display system. Combining software radio technology and embedded system technology,the portable LTE-R testing equipment finally achieved the effect of the size of the portable tablet computer with operability and goodportability. The LTE-R coverage testing analysis and SINR testing analysis of Shuo-Huang line showed＇that the portable LTE-R testingequipment met the demand of actual measurement, and the efficiency in the field of construction measurement could be effectivelyimproved.