无线电系统基本性能参数的快速空口测试方法  

Fast Over-the-air Test Methods of the Basic Performance of Wireless System

作　　者：谭伊 刘列 黎福海[2] 漆一宏 于伟 Tan Yi;Liu Lie;Li Fuhai

机构地区：[1]通用测试系统有限公司 [2]湖南大学电气与信息工程学院

出　　处：《安全与电磁兼容》2021年第2期42-47,共6页Safety & EMC

摘　　要：无线电系统的收发性能决定了通信链路的质量,无线电系统性能参数的基本空口测试方法耗时长、效率低,极大限制了研发和认证机构的运作效率。结合3GPP与CTIA相关文献及标准,文章以Friis传输方程为切入点,阐述了基本收发性能参数的物理内涵和空口测试技术的原理,重点分析了回报机制法、收发同频法以及全频带内总全向灵敏度扫描三种快速空口测试方法。不同测试场景的各种通信制式下的测试对比表明:三种快速空口测试方法均比基本测试方法——功率步进法更为高效,同时测试系统的精度和可重复性也有所提升。The quality of communication link is determined by the transceiver performance of wireless communication system.The current over-the-air test method of the radio system performance is time-consuming and of low efficiency,which greatly limits the operational yield of R&D and certification agencies.The article employs Friis transmission equation as a starting point to describe the physical meaning of the basic transceiver performance parameters and the principle of over-the-air test technology with reference to 3GPP and CTIA related papers and standard,focuses on three fast over-the-air test methods including the return mechanism method,the transceiver co-frequency method,and fast band-sweep total isotropic sensitivity method.The comparison of different tests under various communication standards in different scenarios shows that fast over-the-air test methods are more efficient than the basic test method—the power stepping method,and the precision and the repeatability of the test system are improved as well.

关 键 词：有效辐射功率 总辐射功率 有效灵敏度 总全向灵敏度 快速空口测试方法 

分 类 号：TN98[电子电信—信息与通信工程]