Darkroom multi-probe test system for performance of MIMO wireless terminal

Abstract

The invention discloses a darkroom multi-probe test system for performance of an MIMO wireless terminal. The system comprises a ring, two or more than two probes, a channel simulator and a base station simulator. The probes are distributed on the ring. Each physical channel of the channel simulator is connected with one polarity of the probe. The base station simulator is connected with the channel simulator. The test principle of the invention is as follows: a test signal generated by a transmitter or the base station simulator passes through the wireless channel simulator, and the wireless channel simulator simulates a wireless channel according to a channel model which is defined in advance; the signal is separated in the channel simulator and distributed in each probe in the darkroom, and is independently radiated into the dark room; at last, the plurality of radiant signals are combined in a central space of the darkroom and are used for generating a needed wireless channel environment around equipment under test. The darkroom multi-probe test system for performance of the MIMO wireless terminal of the invention could be used for simulating a complicated wireless environment in reality, ensuring accuracy of the measurement, and measuring the performance of the terminal under true environment.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a darkroom multi-probe test system for measuring the performance of MIMO wireless terminals. Background technique [0002] MIMO (Multiple-Input Multiple-Output) technology refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and receiving end, respectively, so that signals are transmitted and received through multiple antennas at the transmitting end and receiving end, thereby improving communication quality. It can make full use of space resources, realize multiple transmissions and multiple receptions through multiple antennas, and can double the system channel capacity without increasing spectrum resources and antenna transmission power, showing obvious advantages, and is regarded as the next generation of mobile The core technology of communication. [0003] In order to meet the requirements of wireless communicati...

AI Technical Summary

Problems solved by technology

The traditional OTA test scheme cannot realize the simulation of interference and multipath channel models in the real communication environment, so it cannot accurately identify the performance of MIMO devices

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