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Phased array network calibration method and device, equipment and storage medium

A calibration method and phased array technology, applied in transmitter monitoring, space transmit diversity, radio transmission systems, etc., to achieve the effect of improving calibration accuracy and estimation accuracy

Active Publication Date: 2019-10-18
MORNINGCORE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the RF circuitry connecting the antenna and the RF chain in hybrid beamforming techniques has significant random phase drift, making calibration for such phase drift a prerequisite for hybrid beamforming designs

Method used

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  • Phased array network calibration method and device, equipment and storage medium
  • Phased array network calibration method and device, equipment and storage medium
  • Phased array network calibration method and device, equipment and storage medium

Examples

Experimental program
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Embodiment 1

[0053] Figure 1a This is a flow chart of a method for calibrating a phased array network according to Embodiment 1 of the present invention. This embodiment is applicable to the calibration of the phase drift of a phased array network of a multi-RF chain large-scale antenna system in a noisy environment. In the case of real-time estimation, the method can be performed by a phased array network calibration device, which can be implemented by hardware and / or software, and can generally be integrated in a computer for real-time estimation of the phase drift of the phased array network in the device. like Figure 1a As shown, the method includes:

[0054] Step 110: In at least one phase state of the phased array network to be calibrated, receive and measure a preset training sequence sent by at least one user to obtain a measurement signal, wherein the measurement signal is a phase drift value of the phased array network. function of the variable.

[0055] Typically, this embod...

Embodiment 2

[0068] Figure 2a This is a flow chart of a method for calibrating a phased array network in Embodiment 2 of the present invention. In this embodiment, on the basis of each optional implementation manner of the above-mentioned embodiment, "according to the direction of each user and the channel complex gain, Calculate the received signals of all users in the current phase state of the phased array network", "obtain the measured signals according to the received signals of all users in each phase state of the phased array network", and "calculate the measured signals to obtain the phased array Estimated Phase Drift of Array Networks" for further optimization. combine Figure 2a , the method specifically includes the following steps:

[0069] Step 210: Receive a preset training sequence sent by at least one user in the current phase state of the phased array network.

[0070] Step 220: Calculate the channel complex gain of each user according to the received preset training s...

Embodiment 3

[0126] image 3 It is a schematic structural diagram of a phased array network calibration device in Embodiment 3 of the present invention. This embodiment is applicable to the situation where the phase drift of the phased array network of the multi-RF chain large-scale antenna system is estimated in real time in a noisy environment, such as image 3 As shown, the phased array network calibration device is applied to computer equipment for real-time estimation of the phase drift of the phased array network, including:

[0127] The measurement module 310 is configured to receive and measure at least one preset training sequence sent by a user under at least one phase state of the phased array network to be calibrated to obtain a measurement signal, wherein the measurement signal is a phase of the phased array network a function with a variable value for the drift

[0128] The estimation module 320 is used to calculate the measurement signal by using the parameter estimation a...

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Abstract

The embodiment of the invention discloses a phased array network calibration method and a device, equipment and a storage medium. The method comprises the steps that in at least one phase state of a phased array network to be calibrated, a preset training sequence sent by at least one user is received and measured, a measurement signal is obtained, and the measurement signal is a function with a phase drift value of the phased array network as a variable; calculating the measurement signal by adopting a set parameter estimation algorithm to obtain a phase drift estimation value of the phased array network; and performing phase calibration on the phased array network according to the phase drift estimation value. According to the phased array network calibration method and the device, the phase drift of the phased array network of the multi-RF-chain large-scale antenna system is estimated in real time in an environment with high noise, and the calibration accuracy of the phased array network is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of phase calibration of large-scale antenna arrays, and in particular, to a method, apparatus, device, and storage medium for calibrating a phased array network. Background technique [0002] For a millimeter-wave Massive Multiple-Input Multiple-Output (Massive MIMO) system, the deployment of an all-digital beamforming solution requires a large number of radio frequency (RF) chains, resulting in high cost and high power consumption. question. Based on this problem, a hybrid beamforming technique is proposed, which employs a network of phase shifters in the analog domain to control the signal power in the direction in which the signal needs to be transmitted, in order to obtain huge gains for large-scale antenna systems with a moderate number of RF chains. However, the RF circuits connecting the antenna and the RF chain in hybrid beamforming techniques have significant random phase shif...

Claims

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Application Information

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IPC IPC(8): H04B17/12H04B7/06
CPCH04B17/12H04B7/0617
Inventor 蒋轶王昕魏羲子翔龙红星王卫兵
Owner MORNINGCORE TECH CO LTD
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