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Repeater (RPT) receiver device capable of effectively confronting signal rapid fading and large-signal blocking

A fast-fading, large-signal technology, used in wireless communication, power management, electrical components, etc., can solve the problems of reduced call quality, reduced hand-in success rate, user dropped calls, etc. The effect of meeting high indicators

Active Publication Date: 2015-07-15
SUNWAVE COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main impacts are: within the coverage area, the user's call drop rate is high; for users with fast mobile speed, the success rate of cut-in between cells will be reduced, and the user's call quality will be reduced
Fast fading refers to the fading mainly caused by multipath propagation. Because there are many scattering, reflecting and refracting objects around the moving body, the multipath transmission of the signal is caused, so that the arriving signals are superimposed on each other, and the amplitude of the composite signal is fast. It reflects the loss caused by the average change of the receiving level of dozens of wavelengths in a small microscopic range. Fast fading will also cause the decline of call quality, the increase of bit error rate of data services, and the drop of users.
Current receiver designs are not particularly effective against fast fading and large signal blocking

Method used

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  • Repeater (RPT) receiver device capable of effectively confronting signal rapid fading and large-signal blocking
  • Repeater (RPT) receiver device capable of effectively confronting signal rapid fading and large-signal blocking

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. While the invention will be described in conjunction with the preferred embodiments, it will be understood that it is not intended to limit the invention to the described embodiments. On the contrary, the invention is to cover alternatives, modifications and equivalents, which may be included within the scope of the invention as defined by the appended claims.

[0013] Such as figure 1 As shown, the present invention proposes a repeater receiver device effectively against fast signal fading and large signal blocking: including low noise amplifier LNA, digital control attenuator ATT, gain adjustable amplifier VGA, signal amplifier AMP, operational amplifier OP , Mixer Mixer, frequency local oscillator source Lo, analog / digital converter AD, digital / analog converter DA, signal detector DEC, band-pass filter BPF, low-pass filter LPF and microcontroller MCU....

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Abstract

The invention discloses a repeater (RPT) receiver device capable of effectively confronting signal rapid fading and large-signal blocking. The RPT receiver device comprises a low noise amplifier LNA, a numerical control attenuator ATT, a variable gain amplifier VGA, a signal amplifier AMP, an operational amplifier OP, a mixer Mixer, a frequency local oscillator source Lo, an analog / digital converter AD, a digital / analog converter DA, a signal detector DEC, a band-pass filter BPF, a low pass filter LPF and a microcontroller unit MCU. The RPT receiver device has the advantages of adopting a three-level dynamic control amplifying circuit, achieving effectively confronting of the rapid fading and the large-signal blocking of received signals through different amplification / attenuation slope, and then meeting the requirements of a communication system for high target and high performance.

Description

technical field [0001] The invention relates to a repeater receiver device, more specifically, it relates to a repeater receiver device which can effectively resist fast signal fading and large signal blocking. Background technique [0002] Blocking interference refers to the interference caused by receiving saturation distortion caused by a strong out-of-band signal when the receiver receives a weak useful signal, which is called blocking interference. The main impacts are: within the coverage area, the call drop rate of users is high; for users who move faster, the success rate of cut-in between cells will be reduced, and the call quality of users will be reduced. Fast fading refers to the fading mainly caused by multipath propagation. Because there are many scattering, reflecting and refracting objects around the moving body, the multipath transmission of the signal is caused, so that the arriving signals are superimposed on each other, and the amplitude of the composite ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/52H04W88/04
Inventor 李成恩
Owner SUNWAVE COMM