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Transmitter, receiver, signal transceiver and corresponding methods

A technology for receiving signals and receivers, which is applied in the field of numerical control and can solve problems such as the inability to eliminate image interference signals with high precision and the decline of estimation accuracy.

Pending Publication Date: 2022-05-24
HANGZHOU GEO-CHIP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology cannot effectively eliminate the adverse effects caused by the interference signal doped in the test signal, thus causing a significant drop in estimation accuracy when estimating the mismatch parameters related to the mismatch of the IQ two-way mixer at the RF receiver , so that it is impossible to eliminate the image interference signal due to the mismatch of the IQ two-way mixer in the radio frequency communication signal with high precision

Method used

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  • Transmitter, receiver, signal transceiver and corresponding methods
  • Transmitter, receiver, signal transceiver and corresponding methods
  • Transmitter, receiver, signal transceiver and corresponding methods

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Embodiment Construction

[0030] The principles and spirit of the present invention will now be described with reference to several exemplary embodiments. It should be understood that these embodiments are only given for those skilled in the art to better understand and implement the present invention, but not to limit the scope of the present invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0031] In the process of communication, the RF signal received at the receiver can be represented by the following complex function in the complex domain (I / Q plane):

[0032]

[0033] In the above formula, s(t) is the complex baseband signal, f 0 is the local oscillator frequency, f IF is the IF signal frequency.

[0034] Correspondingly, the image interference signal that will cause interference can be expressed as:

[0035]

[0036] The analog local oscilla...

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Abstract

The invention discloses a receiver, which comprises a signal receiving module used for receiving a first test signal to obtain a first test receiving signal, and receiving a second test signal to obtain a second test receiving signal after a preset time period after the first test signal is received; and a calculation module that calculates a calibration parameter based on the first test receive signal and the second test receive signal for calibrating the received radio frequency communication signal.

Description

technical field [0001] The invention relates to the technical field of numerical control, in particular to a transmitter, a receiver, a signal transceiver and a method corresponding thereto. Background technique [0002] In order to eliminate the image interference signal caused by the mismatch of the IQ two-way mixer in the RF receiver, it is necessary to use the RF transmitter to send a test signal to the RF receiver, so that the RF receiver can estimate the calibration parameters and calibrate based on the calibration parameters. radio frequency communication signals. In this paper, the radio frequency communication signal refers to the radio frequency signal received by the radio frequency receiver after calibration using the test signal and used to carry the actual communication information. [0003] However, RF transmitters always have a certain residual error. These residual errors will generate certain interference signals and doped in the test signal. The existin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04B17/11H04B17/21
CPCH04B1/40H04B17/11H04B17/21H04B17/0085H04B17/26H04B17/102H04B17/24
Inventor 聂宏
Owner HANGZHOU GEO-CHIP TECH CO LTD