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Device for detecting and eliminating reverse self-excited interference in tdd system

A technology of interference detection and reverse, applied in the direction of transmission system, electrical components, etc., can solve problems such as the influence of reverse signal calculation, reduce the performance of the receiver, and the receiver cannot work normally, so as to improve the signal quality and eliminate reverse The effect of self-excited disturbance

Active Publication Date: 2018-11-27
TIANJIN JINHANG COMP TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If the interference frequency falls within the bandwidth of the baseband signal, it will affect the calculation of the reverse signal, reduce the performance of the receiver, and even cause the receiver to fail to work normally.

Method used

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  • Device for detecting and eliminating reverse self-excited interference in tdd system
  • Device for detecting and eliminating reverse self-excited interference in tdd system
  • Device for detecting and eliminating reverse self-excited interference in tdd system

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Embodiment Construction

[0033] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] In order to solve the above technical problems, the present invention provides a reverse self-excited interference detection and elimination device in a TDD system, such as figure 1 As shown, the device includes: a TDD system parameter configuration module, an enabling module, a control switch SW-A, a signal detection module, and a wave trap;

[0035] The TDD system parameter configuration module is used to power on the TDD system and configure system parameters; the system parameters include: frequency point parameters, bandwidth parameters;

[0036] The enabling module is used to enable the TDD control signal after the TDD system parameter configuration module configures the system parameters;

[0037] The co...

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Abstract

The invention belongs to the technical field of single-frequency-point interference removal by filtration for broadband time division duplex transceivers, and particularly relates to a detection and elimination device for reverse self-excitation interference in a TDD system. Compared with the prior art, the feasible detection and elimination scheme is provided for reverse self-excitation interference in the TDD system. Reverse self-excitation interference is detected in an appointed detection period by utilizing TDD switch control on a reverse link to find a self-excitation interference frequency point, a wave trap coefficient corresponding to the frequency point is obtained by searching a wave trap coefficient table, and filtering processing is conducted on reverse signals, so that reverse self-excitation interference is eliminated and the signal quality of the reverse link is improved.

Description

technical field [0001] The invention belongs to the technical field of single-frequency point interference filtering for broadband time division duplex (Time Division Duplexing, TDD) transceivers, and specifically relates to a device for detecting and eliminating reverse self-excited interference in a TDD system. The oscilloscope, combined with the TDD switch control on the communication link, detects and eliminates reverse self-excited interference, and improves the signal quality of the reverse link. Background technique [0002] Non-linear devices are used in the analog link of the communication transceiver, and self-excitation phenomenon is inevitable. The interference caused by this self-excitation is usually a single-frequency narrow-band interference, and the frequency and amplitude of the self-excitation interference will change with time. , environment and other factors. If the interference frequency falls within the bandwidth of the baseband signal, it will affect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04B1/40
CPCH04B1/1027H04B1/40H04B2001/1063
Inventor 邢立佳
Owner TIANJIN JINHANG COMP TECH RES INST