Over-the-Air Testing for Dual-Polarized MIMO Devices: Setup Design and Validation  

作　　者：Yong Li Junli Li Xiang Zhang Guiming Wei 

机构地区：[1]Key Laboratory of Universal Wireless Communications(Ministry of Education),Beijing University of Posts and Telecommunications,Beijing 100876,China [2]China Academy of Information and Communications Technology,Beijing 100191,China

出　　处：《China Communications》2022年第11期268-281,共14页中国通信（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant.61971067.

摘　　要：Over-the-air(OTA)testing is considered as the only feasible solution to evaluate radio performances of the fifth-generation(5G)wireless devices which feature two important technologies,i.e.,massive multiple-input multiple-output(MIMO)and millimeter-wave(mmWave).The multi-probe anechoic chamber(MPAC)based OTA setup is able to emulate realistic multipath propagation conditions in a controlled manner.This paper investigates an MPAC OTA setup which is capable of evaluating the performances of 5G base stations as the devices-under-test(DUTs)which are equipped with dual-polarized antennas.Both end-to-end setup and probe configuration for the considered MPAC setup will be elaborated.Furthermore,since building a practical MPAC setup is expensive,time-consuming,and error-prone,an endto-end software testbed is established for validation purpose to avoid technical risks before finalizing an MPAC setup.The architecture of the testbed is presented,which can emulate both the channel profiles perceived by the DUT and the physical-layer behaviors of the considered link conforming to 5G new radio(NR)specifications.Results show that the performances under the emulated channel agree well with those under the target channel,validating the accuracy and effectiveness of the MPAC method.

关 键 词：anechoic chamber DUAL-POLARIZATION multi-probe anechoic chamber(MPAC) over-the-air(OTA) performance evaluation 

分 类 号：TN929.5[电子电信—通信与信息系统]