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Communication system calibration method and communication system calibration device

A correction method and communication system technology, applied in the correction method of the communication system and related circuit fields, can solve problems such as rise, incomplete quadrature modulation/demodulation program, communication system influence, etc.

Active Publication Date: 2018-02-06
REALTEK SEMICON CORP
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AI Technical Summary

Problems solved by technology

The main cause of IQ imbalance is the mismatch between the two IQ circuits of the radio frequency (RF) circuit. Even a slight deviation will affect the overall communication system and form incomplete quadrature modulation / demodulation Change the program, which will lead to an increase in the bit error rate (Bit ErrorRate, BER) at the receiving end

Method used

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  • Communication system calibration method and communication system calibration device
  • Communication system calibration method and communication system calibration device
  • Communication system calibration method and communication system calibration device

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Embodiment Construction

[0038] Certain terms are used in the specification and subsequent claims to refer to particular elements. It should be understood by those of ordinary skill in the art that manufacturers may refer to the same element by different nouns. The scope of this specification and subsequent applications does not take the difference in name as a way to distinguish elements, but takes the difference in function of the elements as a criterion for distinguishing. The "comprising" mentioned in the entire specification and subsequent claims is an open-ended term, so it should be interpreted as "including but not limited to". Additionally, the term "coupled" as used herein includes any means of direct and indirect electrical connection. Therefore, if a first device is described as being coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or conn...

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Abstract

The invention discloses a communication system calibration method and a communication system calibration device. The method is used to calibrate the transmission end of the communication system, which includes: generating a test signal at a transmission end; setting at least one calibration at the transmission end coefficient; transmit the test signal to a receiving end through the at least one correction coefficient from the transmitting end; perform a spectrum analysis on the test signal received by the receiving end to obtain a spectrum analysis result; and according to the spectrum analysis result adjusting the at least one calibration coefficient of the transmitting end to calibrate the transmitting end. On the other hand, the present invention also provides a communication system calibration method for calibrating the receiving end of the communication system. In addition, the present invention further provides related communication system calibration devices related to the above two communication system calibration methods.

Description

technical field [0001] The present invention relates to a calibration method and a related circuit for a communication system, and more particularly, to a calibration method and a related circuit for a wireless transmission system using quadrature amplitude modulation. Background technique [0002] With the rapid development of communication systems, the requirements for transmission speed are getting higher and higher. Generally speaking, the more complex modulation technology can usually contain more information data; in other words, it can be processed by complex modulation To increase the transmission rate, such as 64-Quadrature Amplitude Modulation (64-Quadrature Amplitude Modulation, 64-QAM), or even 256-QAM. Therefore, the need for high-order quadrature amplitude modulation is becoming more and more popular. If high-order quadrature amplitude modulation is expected to have a good transmission and reception effect, the error vector amplitude (EVM) of the communication...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/34
Inventor 吴智湧张仲尧
Owner REALTEK SEMICON CORP
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