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Wireless channel measuring data analyzing method based on dual-polarized MIMO (Multiple-InputMultiple-Output)

A technology for measuring data and wireless channels, applied in channel estimation, baseband systems, digital transmission systems, etc., can solve problems that cannot fully reflect channel characteristics and propagation principles

Active Publication Date: 2016-06-29
QUANZHOU INST OF EQUIP MFG
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Problems solved by technology

However, the result obtained by this measurement method is actually the superposition of the measured antenna characteristics and channel characteristics, which cannot fully reflect the characteristics of the channel itself and the propagation principle. Therefore, it is necessary to process the measurement results through an algorithm to obtain a signal that can reflect the polarization characteristics of the channel. channel impulse response

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  • Wireless channel measuring data analyzing method based on dual-polarized MIMO (Multiple-InputMultiple-Output)
  • Wireless channel measuring data analyzing method based on dual-polarized MIMO (Multiple-InputMultiple-Output)
  • Wireless channel measuring data analyzing method based on dual-polarized MIMO (Multiple-InputMultiple-Output)

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[0032] The present invention provides a dual-polarization MIMO wireless channel measurement data analysis method, which uses a wireless channel detector to measure data of a wireless channel in a specific scene, and uses MATLAB to intercept the measurement data with a dynamic threshold value to obtain an effective dynamic interval, remove The influence of cross polarization, after obtaining the effective dynamic interval of the measurement data, the polarization separation of the effective dynamic interval data is carried out, and the MIMO channel matrix of horizontal polarization, vertical polarization and dual polarization is obtained, and their respective Channel parameters to realize the analysis of dual-polarization MIMO channel characteristics in specific scenarios.

[0033] The measured MIMO complex channel impulse response data H(t,m T × m R ,τ) is a three-dimensional channel matrix, which is the superposition of measured antenna characteristics and channel characteri...

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Abstract

The invention discloses a wireless channel measuring data analyzing method based on dual-polarized MIMO (Multiple-Input Multiple-Output). The data of wireless channels in a specific scene are measured by a wireless channel detector; dynamic threshold value interception is carried out to the measuring data by MATLAB software; a valid dynamic interval is obtained; the influence of cross polarization is eliminated; after the valid dynamic interval of the measuring data is obtained, polarization separation is carried out to the data in the valid dynamic interval; horizontal-polarized, vertical-polarized and dual-polarized MIMO channel matrixes are obtained; channel parameters are calculated through a preset algorithm; the features of the dual-polarized MIMO channels in the specific scene are analyzed; therefore, the features of the dual-polarized MIMO channels in different scenes are researched rapidly; and the method has important significance in modeling the dual-polarized MIMO channels.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a dual-polarization MIMO wireless channel measurement data analysis method. Background technique [0002] The MIMO (Multiple-Input Multiple-Output) system uses multiple antenna units at both ends of the transceiver, which can greatly increase the system capacity without increasing the transmission power, and plays an important role in alleviating the tight spectrum resources. The MIMO technology utilizes the characteristics of multipath, that is, the superposition of multiple independent channels to obtain multiple uncorrelated signals. Therefore, maintaining channel independence is the key to MIMO technology. On the one hand, this requires a large antenna distance, such as the distance between the antennas will increase to about 10 times the wavelength, which is unrealistic for communication terminals with limited space. On the other hand, in the actual channel, due to the ...

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Application Information

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IPC IPC(8): H04L25/02H04B17/309
CPCH04B17/309H04L25/0212H04L25/0204
Inventor 李艺伟汤璇林邦姜张士灏
Owner QUANZHOU INST OF EQUIP MFG
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