High-precision wireless channel test bench based on virtual antenna array and method thereof

A virtual antenna and wireless channel technology, applied in wireless communication, communication channel monitoring, transmission monitoring, etc., can solve the problems of low sensitivity, time-consuming post-processing, slow switching speed of antenna array, etc., and achieve good real-time performance and high accuracy The effect of saving data storage time

Inactive Publication Date: 2010-02-24
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve many disadvantages of the existing platform, such as slow switching speed of the antenna array, high complexity of channel analysis, low channel analysis accuracy due to time-consuming post-processing, and the use o

Method used

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  • High-precision wireless channel test bench based on virtual antenna array and method thereof
  • High-precision wireless channel test bench based on virtual antenna array and method thereof
  • High-precision wireless channel test bench based on virtual antenna array and method thereof

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Embodiment

[0040] Embodiment: test the MIMO channel characteristics of 10*10 under the 10MHz bandwidth of high-speed mobile situation, select the vector signal generator of 10MHz to generate the signal of 10MHz, transmit to the receiver through the beam scanning antenna, and the receiving end transfers the received radio frequency signal to The baseband signal is then completely collected by an acquisition card with an acquisition rate of 20Msample / s and the 10MHz signal is stored immediately. For the work of the antenna part, to measure a 10*10 MIMO channel, it is necessary to switch the transmitting antenna scanning 10 times within the channel coherence time. Every time the transmitting antenna is switched (it can be assumed to be switched within a horizontal range of 120 degrees), the receiving antenna Scanning switches 10 times (it can be assumed to be switched within a horizontal range of 120 degrees), that is, controlling the voltage of the receiving antenna needs to be switched lin...

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Abstract

The invention discloses a high-precision wireless channel test bench based on a virtual antenna array and a method thereof. An antenna system adopts the virtual antenna array technology based on an electronic control wave beam scanning antenna, adjusts the wave beam direction of the antenna wave beam in a horizontal zone and a vertical zone by a voltage control signal, adjusts the physical position of the antenna by a rotation controller, measures the airspace in a scanning mode, collects actual-measurement channel response and obtains the fine grain characteristic of the channel in the time domain and the airspace so as to provide effective parameter for practical channel analysis and modeling. The invention improves the switching speed of the antenna array and increases the accuracy of channel test.

Description

technical field [0001] The invention belongs to the field of broadband wireless communication, and relates to a wireless channel test platform, especially for the design and optimization requirements of the next-generation broadband mobile communication system, and can be widely used in high-precision and multi-dimensional testing of multiple transmission and multiple reception (MIMO) wireless transmission channels and modeling. Background technique [0002] The future broadband wireless communication network will be able to provide higher capacity, larger coverage and faster data transmission rate. At the same time, people's research on wireless channels is getting more and more in-depth. Developing a reasonable MIMO wireless channel model to simulate various actual channel environments is the starting point for evaluating the performance of existing space-time processing algorithms and the premise of developing more robust space-time processing algorithms. It is also the s...

Claims

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Application Information

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IPC IPC(8): H04W24/00H04B17/00H04B17/30
Inventor 刘富强尹学锋周毅田力
Owner TONGJI UNIV
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