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Calibration method, device, storage medium and terminal for IQ unbalance of transceiver

A calibration method and a calibration device technology, which are applied in the field of signal calibration, can solve the problems of low calibration efficiency and high complexity of transceiver calibration, and achieve the effects of improving calibration efficiency, shortening overall calibration time, and reducing time overhead

Active Publication Date: 2020-10-30
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the calibration of the transceiver is highly complex, and multiple channel configurations are used to complete the calibration of the transceiver channel, and the calibration efficiency is not high

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  • Calibration method, device, storage medium and terminal for IQ unbalance of transceiver
  • Calibration method, device, storage medium and terminal for IQ unbalance of transceiver
  • Calibration method, device, storage medium and terminal for IQ unbalance of transceiver

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Embodiment Construction

[0027] As mentioned in the background art, in the prior art, the calibration of the transceiver is complicated and the calibration efficiency is low.

[0028] The technical solution of the present invention utilizes the characteristic that there is a frequency difference between the working frequency point of at least one receiving channel and the working frequency point of any transmitting channel to realize the calibration of at least one receiving channel. In addition, by controlling any transmitting channel to transmit a calibration signal to at least one receiving channel, the calibration of at least one receiving channel is realized at the same time, especially when the transceiver has more than two groups of transmitting and receiving combinations, the control is simple and the control time is optimized. Thus, the calibration efficiency is improved.

[0029] In order to make the above objects, features and advantages of the present invention more comprehensible, specifi...

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Abstract

The invention relates to a calibration method and device for IQ imbalance of a transceiver as well as a storage medium and a terminal. The calibration method comprises the following steps: controllingany transmitting channel to transmit a calibration signal to at least one receiving channel, wherein a frequency difference exists between a working frequency point of the at least one receiving channel and a working frequency point of the any transmitting channel; performing imbalance estimation on a signal received by the at least one receiving channel, so as to obtain at least one first compensation value for the IQ imbalance; respectively calibrating the at least one receiving channel by utilizing the at least one compensation value; receiving the calibration signal transmitted by the atleast one transmitting channel by utilizing any calibrated receiving channel, and calculating at least one second compensation value for the IQ imbalance of the at least one transmitting channel; andcalibrating the at least one transmitting channel by utilizing the at least one second compensation value. By virtue of the technical scheme of the invention, calibration time can be shortened, and calibration efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of signal calibration, in particular to a method, device, storage medium and terminal for calibrating the IQ imbalance of a transceiver. Background technique [0002] Wireless devices (eg, cellular phones or smart phones) in a wireless communication system can send and receive data for two-way communication. A wireless device may include a transmitter for data transmission and a receiver for data reception. For data transmission, the transmitter can transmit a local oscillator (Local Oscillator, LO) signal with data modulation to obtain a modulated signal, amplify the modulated signal to obtain a radio frequency (Radio Frequency, RF) signal with appropriate output power, and will output the RF signal sent to the base station via the antenna. For data reception, the receiver may obtain a received RF signal via an antenna, amplify the downconverted received RF signal with a receive LO signal, and process the...

Claims

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Application Information

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IPC IPC(8): H04B17/14H04B17/21
CPCH04L27/364H04B17/14H04B17/21
Inventor 胡立娟武杰林颢
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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