An antenna array calibration method and system
An antenna array and calibration method technology, applied in the field of communications, can solve problems such as data distortion, and achieve the effects of improving accuracy, avoiding distortion, and comparing results accurately
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Embodiment 1
[0058] A method for calibrating an antenna array disclosed in an embodiment of the present invention is introduced in detail.
[0059] refer to Image 6 , shows a flowchart of a method for calibrating an antenna array in an embodiment of the present invention.
[0060] Step 100, receiving calibration information from a digital signal processing unit in a first radio frame.
[0061] Wherein, the calibration information may specifically include: an average power value of the calibration sequence, a known number of symbols in which the calibration sequence is located, and a known calibration enable signal.
[0062] The average power value of the calibration sequence can be calculated by the digital signal processing unit based on all known data of the calibration sequence. Specifically, after the DSP receives the calibration trigger signal from the upper layer, it takes all the data of the calibration sequence (2080 sampling points in total) and calculates the average power val...
Embodiment 2
[0076] A method for calibrating an antenna array disclosed in an embodiment of the present invention is introduced in detail.
[0077] refer to Figure 7 , shows a flowchart of a method for calibrating an antenna array in an embodiment of the present invention.
[0078] Step 200, receiving calibration information from a digital signal processing unit in a first radio frame.
[0079] Wherein, the calibration information may specifically include: an average power value of the calibration sequence, a known number of symbols in which the calibration sequence is located, and a known calibration enable signal.
[0080] The average power value of the calibration sequence is calculated by the digital signal processing unit based on all known data of the calibration sequence.
[0081] Step 202, inserting the known calibration sequence into normal data in the second radio frame.
[0082] The first radio frame is connected to the second radio frame, and the first radio frame is before...
Embodiment 3
[0101] An antenna array calibration system disclosed in the embodiment of the present invention is introduced in detail.
[0102] refer to Figure 8 , shows a structural diagram of an antenna array calibration system in an embodiment of the present invention.
[0103] The antenna array calibration system specifically may include:
[0104] A digital signal processing unit 30, and a BBU-FPGA unit 32.
[0105]The functions of each unit and the relationship between each unit are introduced in detail below.
[0106] The digital signal processing unit 30 is configured to calculate an average power value of the calibration sequence based on all data of the known calibration sequence.
[0107] The digital signal processing unit 30 is further configured to insert the known calibration sequence into the normal data in the second radio frame.
[0108] Specifically, the digital signal processing unit 30 inserts the known calibration sequence into two adjacent symbols in the second rad...
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