Test method and device of total isotropic sensitivity (TIS) in multi-antenna multi-input multi-output (MIMO) system

Abstract

The invention discloses a test method and device of total isotropic sensitivity (TIS) in a multi-antenna multi-input multi-output (MIMO) system. The test device comprises a base station emulator, a multipath fading channel simulator and a darkroom, wherein the darkroom comprises test antennas and a tested device, wherein the test antennas and the tested device are arranged in the darkroom. When the device is used for testing the TIS, the base station emulator generates emission signals of multiple transmitting antennas, wherein the emission signals have cross polarization characteristics and adopt space-time codes or space-frequency codes; the multipath fading channel simulator adds corresponding channel parameters and noise interference parameters to the emission signals, and transmits the faded emission signals to the test antennas in the darkroom so as to transmit the faded emission signals to the tested device; and the tested device performs multi-antenna receiving on the emission signals, and carries out maximum ratio combining (MRC) on the received signals as well as acquires the TIS in accordance with the combined received signals. According to the invention, the test of the TIS in the multi-antenna MIMO system can be realized.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to the technical field of radiation performance testing of wireless communication terminal products, aiming at the total receiving sensitivity TIS (Total Isotropic Power) test in a multi-antenna MIMO (Multiple Input, Multiple Output, Multiple Input Multiple Output) system Methods and Apparatus. Background technique [0002] With the rapid development of wireless communication technology, especially the rise of 3G (third generation mobile communication technology), all kinds of wireless communication products need to have good transmission and reception performance in order to ensure the communication quality and provide users with better voice and data services. Among them, one of the important indicators to measure the radiation performance of wireless terminal equipment is the total radiated power (Total Radiated Power, TRP) and the total receiving sensitiv...

AI Technical Summary

Problems solved by technology

[0012] First, this method needs to open independent receiving chains separately, which not only requires external control, but also the obtained test results are not very accurate;

[0013] Second, due to different antenna patterns and antenna matching methods, it is difficult to achieve physical independent disconnection of antennas

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