System and method for multi-antenna channel environment simulation based on fully anechoic chamber
A channel environment, simulation system technology, applied in the field of multi-antenna channel environment simulation system, can solve the problem of not reaching a unified standard, unable to meet the multi-antenna RF test, etc., and achieve the effect of reducing cost
Active Publication Date: 2017-05-24
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0003] With the advent of the 4G era, multi-antenna technology is widely used in various wireless communication products. Since multi-antenna technology largely relies on complex multi-path channels, the previous single-antenna OTA test method can no longer meet the requirements of multi-antenna. The demand for radio frequency testing, and for MIMO OTA testing, a unified standard has not been reached internationally
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[0049] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0050] Such as figure 1 Therefore, the present invention provides a multi-antenna channel environment simulation system based on a fully anechoic chamber. When the number of output ports of the channel simulation device does not match the number of antennas in the fully anechoic chamber, it includes:
[0051] Base station simulator 1: used to generate N-channel signals, and send the N-channel signals to the channel emulation grouping unit 2;
[0052] The channel emulation grouping unit 2: used to process the N-path signals to form K multipath signals, divide the K multipath signals into L groups and output them to the probe antenna distribution unit through the output por...
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The invention provides a system for multi-antenna channel environment simulation based on a full-silencing dark room. The system comprises a base station simulator, a channel simulation grouping unit, a probe antenna distribution unit and a testing unit. The base station simulator is used for sending generated N routes of signals to the channel simulation grouping unit. The channel simulation grouping unit is used for processing the N routes of signals, dividing the formed K multi-path signals into L groups and transmitting the multi-path signals to the probe antenna distribution unit through an output port of the channel simulation grouping unit. The probe antenna distribution unit is used for enabling the inputted L groups of multi-path signals to be connected with probe antennas. The testing unit is used for sending the L groups of multi-path signals to a device to be tested through the probe antennas, and measuring the signals processed by the device to be tested to obtain the radio-frequency performance of the device to be tested. The system can be used for carrying out testing on the radio-frequency performance of the multi-antenna device under a real environment. The invention further provides a method for the multi-antenna channel environment simulation based on the full-silencing dark room.
Description
technical field [0001] The invention relates to the communication field, in particular to a multi-antenna channel environment simulation system and method based on a fully anechoic chamber. Background technique [0002] Single-antenna OTA test, as an active test, mainly tests the total radiated power TRP and total isotropic sensitivity TIS of the terminal in the free space in the microwave anechoic chamber and the left and right ears of the human head model, directly reflecting the The radiation performance of the terminal machine in all directions in three-dimensional space provides a basis for quantitative analysis and optimization of the impact of the human body on the radio frequency performance of the terminal machine, and has been valued and recognized by terminal manufacturers. [0003] With the advent of the 4G era, multi-antenna technology is widely used in various wireless communication products. Since multi-antenna technology largely relies on complex multi-path c...
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IPC IPC(8): H04B7/0404H04B17/391
Inventor 王强邵栋张建华陈海云张康乐李忠楠张平
Owner BEIJING UNIV OF POSTS & TELECOMM