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An interference restraint method of the adjacent channels and signal receiving end

An adjacent channel interference and receiving end technology, applied in line fault/interference reduction, baseband system components, equalizers, etc., can solve the problems of unsuitable integrated devices, large receiving end, complex design, etc., to reduce the complexity of implementation. The effect of reducing the operating cost and reducing the design requirements

Inactive Publication Date: 2010-02-10
新奇点智能科技集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a method for suppressing adjacent channel interference, which is used to solve the problem of large volume at the receiving end, high power consumption, complex design, and unsuitability for integrated device implementation caused by the use of analog filters for adjacent channel interference suppression in the prior art. The problem

Method used

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  • An interference restraint method of the adjacent channels and signal receiving end
  • An interference restraint method of the adjacent channels and signal receiving end
  • An interference restraint method of the adjacent channels and signal receiving end

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Embodiment Construction

[0026] The embodiment of the present invention proposes a method for suppressing adjacent channel interference of a digital mobile multimedia broadcast receiving terminal. The method combines analog filtering and digital filtering techniques to effectively suppress adjacent channel interference, and this method The receiving terminal is suitable for implementation in integrated circuit devices.

[0027] see image 3 , is a schematic structural diagram of a digital mobile multimedia broadcasting signal receiving end according to an embodiment of the present invention. The receiving end includes an analog front end, an over-sampling module, a digital filter and a down-sampling module. The analog signal is input to the analog front end, passes through the above-mentioned modules in turn, and outputs the digital signal from the down-sampling module. There are low performance analog filters inside the analog front end.

[0028] Combine below image 3 The receiving end is shown,...

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Abstract

The disclosed near-channel interference rejection method comprises: when receiving signal, the receiving end filters signal with an analog filter; a first sampling module samples the filter signal andfilters the sampled signal with digital filter module; and a second sampling module samples signal and transforms the signal sampling rate into system signal rate. This invention combines both analogand digital filtering, rejects interference efficiently, and reduces system complexity and power consumption.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method for suppressing adjacent channel interference and a signal receiving end. Background technique [0002] Mobile communication and broadcasting use radio waves as the medium of information dissemination, so the rational planning of frequency resources is very important. At present, a variety of mobile communication and broadcasting systems coexist, and frequency resources are very tight. The radio management agency implements a unified division and allocation of radio frequencies. In order to improve the utilization efficiency of frequency resources, the adjacent channel protection interval in the mobile system and between systems is getting smaller and smaller, and the impact of interference between adjacent channels is becoming more and more serious, especially for OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing, The dig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/01H04L25/08H04L27/26
Inventor 请求不公开姓名
Owner 新奇点智能科技集团有限公司