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Vol. 173, Issue 6, June 2014, pp. 47-51

 

Bullet

 

Analysis on Calibration and Uncertainty for TD-LTE Radio Test System
 

Zhang Weipeng

School of Mechanical and Electronic Engineering, Ningbo Dahongying University, 317175, China
Tel.: 13685720826

E-mail: zwphb@163.com

 

Received: 18 April 2014 /Accepted: 31 May 2014 /Published: 30 June 2014

Digital Sensors and Sensor Sysstems

 

Abstract: TD-LTE base station radio test system measures radio signal with a required accuracy, so calibration need to be done for transmission path between base station and measurement instruments before test. Considering Transmitter OFF Power measurement within OFF period, modulated signal generator and spectrum analyzer inside test system is used for calibration, to get accurate transmission parameters of the paths, and to reduce test cost without more instruments. The paper describes the uncertainty of test system, analyzes uncertainty contribution of interface mismatch, calculates uncertainty for Transmitter OFF Power measurement, uncertainty is 1.193 dB, within the requirement of 3GPP specification.

 

Keywords: Radio test system, Calibration, Uncertainty, TD-LTE base station.

 

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