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Method, device and system for detecting quality of channel

A technology for detecting channels and channels, applied in transmission systems, digital transmission systems, baseband system components, etc., can solve problems such as unbalanced I/Q branches, unqualified channels, undetectable channel quality degradation, etc., to achieve Guaranteed accuracy, simple and easy detection method

Active Publication Date: 2015-07-08
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, VSWR can only detect whether the impedance at the channel test point is matched. For other factors, such as I / Q branch imbalance, local oscillator phase noise, filter loss, intermodulation interference, ADC / DAC noise, etc. drop undetectable
In other words, even if the VSWR test passes, it cannot be determined that the channel is qualified

Method used

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  • Method, device and system for detecting quality of channel
  • Method, device and system for detecting quality of channel
  • Method, device and system for detecting quality of channel

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Embodiment Construction

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] figure 1 It is a schematic flow diagram of the method of the first embodiment of the present invention, including:

[0030] Step 11: Obtain the emission signal;

[0031] Wherein, when detecting a channel in the transmitting direction, the transmitting signal may be a transmitting signal generated by a local transmitter; when detectin...

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Abstract

Provided are a method, apparatus and system for detecting channel quality; the method comprising: obtaining a sending signal; obtaining a receiving signal, the receiving signal is a signal after the transmission of the sending signal in a channel waiting to be detected; obtaining a signal to noise ratio according to the obtained sending signal and the obtained receiving signal; and detecting the quality of the channel waiting to be detected according to the signal to noise ratio. The embodiment of the present invention can simply and accurately detect the channel quality.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a method, device and system for detecting channel quality. Background technique [0002] In the communication system, in order to ensure the realization of system performance, it is required that the antenna, feeder and radio frequency channel composed of analog devices can reliably modulate the baseband signal into a frequency band signal for transmission, or accurately demodulate the received frequency band signal into the baseband However, due to processing, device aging, nonlinear characteristics, temperature changes, etc., the signal will be distorted and the noise will increase, that is, the channel quality may not be guaranteed, which will seriously affect the system performance. At present, the standing wave detection method can be used for channel quality detection. [0003] Standing wave can be used to describe whether the line transmits the input signal effectively w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L1/00
CPCH04L1/20
Inventor 张武荣刘烨周蓉
Owner HONOR DEVICE CO LTD