Field test results and analysis of a semi-automatic effective diversity gain measurement system for MIMO and diversity antennas

摘要

An improved version of effective diversity gain (EDG) evaluation system is proposed for multiple-input multiple output (MIMO) and diversity antennas. By enhancing the sensitivity of the RF power detection module and increasing rejection of background noises, measurements can now be conducted in actual propagation environments. The control computer is replaced with a laptop to improve system mobility. A data acquisition card with a USB interface is also adopted so that the number of measurable antennas is virtually unlimited. Measurements of various setups are presented to discuss the pros and cons of the proposed system.