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Method and device for promoting sensitivity of receiver

A receiver sensitivity and receiver technology, applied in electrical components, transmission systems, etc., can solve the problem that the RSL index is difficult to meet the requirements, and achieve the effect of small changes, simple implementation, and improved sensitivity

Active Publication Date: 2012-01-25
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in the end, the DDC (Digital Down Converter, digital down conversion) allows the noise introduced must be less than 0.5dBc, otherwise the RSL index is difficult to meet the requirements

Method used

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  • Method and device for promoting sensitivity of receiver
  • Method and device for promoting sensitivity of receiver
  • Method and device for promoting sensitivity of receiver

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Embodiment Construction

[0054] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0055] In order to achieve the purpose of the present invention, the present invention discloses a method for improving receiver sensitivity, comprising the following steps: the receiver receives a signal through an antenna, and inputs the signal to an analog-to-digital converter ADC through an antenna filter and a low-noise amplifier; The ADC processes the received signal by raising the SNRBOOST technology to suppress the spurious noise out of band, and then input the digital down-conversion DDC filter; the DDC filter filters out the out...

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Abstract

The embodiment of the invention provides a method for promoting sensitivity of a receiver. The method comprises the following steps: receiving a signal by the receiver through an antenna and inputting the signal to an analog-digital converter ADC through an antenna filter and a low noise amplifier; treating the received signal through the ADC by adopting a SNRBOOST (signal to noise ratio boost) process, keeping stray noise outside a band, and then inputting the received signal to a DDC (Digital Down Conversion) filter; and filtering the stray noise outside the band of the received signal by the DDC filter, thereby enabling the analog-digital conversion of the received signal to meet the demand of ACS (Adjacent Channel Selectivity) of a system receiver. According to the scheme provided by the invention, DDC treatment and ADC treatment are considered integrally and the DDC is used for filtering the stray noise outside the band, thereby enabling the property of the ADC to meet the index demand of the ACS of the system receiver and promoting the sensitivity of the system receiver.

Description

technical field [0001] The invention relates to the field of digital communication, in particular, the invention relates to a method and a device for improving receiver sensitivity. Background technique [0002] In the radio frequency system, the ADC (Analog to digital converter, analog-to-digital converter) is an important part of the receiver. It is different from the traditional receiver that uses a transistor detector to convert the RF signal into a video signal. The ADC will convert all the signals in the signal. All the information will be preserved, including the phase information of the carrier, which is crucial in the phase modulation communication system. With the continuous improvement of the sampling rate of the ADC, the frequency of the intermediate frequency is also continuously improved, the level of software radio technology has become a trend, and the analog link is greatly shortened. The front-end analog circuit of the software radio is to filter and ampli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10
Inventor 熊军孙华荣刘浩鄢凯
Owner DATANG MOBILE COMM EQUIP CO LTD
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