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Method and device for channelizing real signal

A real signal and channelization technology, applied in the field of communication, can solve the problems of wasting system resources and high complexity of channelization processing, and achieve the effect of reducing complexity and solving the excessive consumption of system resources

Inactive Publication Date: 2010-03-10
THE PLA INFORMATION ENG UNIV
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method and device for channelizing real signals to solve the problems of high complexity and waste of system resources in existing channelization processing

Method used

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  • Method and device for channelizing real signal
  • Method and device for channelizing real signal
  • Method and device for channelizing real signal

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no. 1 example

[0059] see image 3 , is the flow chart of the first embodiment of the method for channelizing real signals in the present invention:

[0060] Step 301: After receiving a certain multi-channel real signal, perform branching and delay on the multi-channel real signal to obtain 2D channel data.

[0061] Step 302: Carry out 2D multiple decimation on the 2D channels of data respectively, and alternately change the sign of each channel of the extracted data.

[0062] Step 303: Perform filtering processing on the 2D channel data after the sign is changed.

[0063] Step 304: Synthesize D channels of complex signals from the filtered 2D channels of data, and perform complex exponential modulation on each channel of complex signals.

[0064] Step 305: After performing D-point FFT on each modulated multiple signal, output D-channel baseband signals.

[0065] see Figure 4 , is the flow chart of the second embodiment of the method for channelizing real signals in the present inventio...

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Abstract

The embodiment of the invention discloses a method and a device for channelizing a real signal. The method comprises: after receiving a certain multichannel real signal, carrying out shunt delay on the multichannel real signal to obtain 2D channel data; respectively carrying out 2D fold extraction on the 2D channel data, and alternately changing the symbol of each extracted channel data; filteringthe 2D channel data processed by symbol change; synthesizing the filtered 2D channel data into D channel complex signal, and carrying out multi-index modulation on each channel complex signal; and carrying out D point FFT on the modulated each channel complex signal, and outputting a D channel baseband signal. The invention carries out extraction treatment 2 folds higher than the prior art on a multiphase treatment front end, thus reducing the complexity of post signal treatment; and the invention carries out optimization on the multi-index modulation part, thus lowering the complexity of thechannelized structure of the existing filter set and solving the problem of over high consumption of system resource.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for channelizing real signals. Background technique [0002] Channelization filtering based on polyphase structure is one of the key technologies of wideband digital receivers and software radios. It can separate multiple independent sub-band signals in the intermediate frequency signal or baseband signal for subsequent digital signal processing. Signals or baseband signals are generally called real signals, and each real signal is a multi-channel signal that includes multiple channel signals. The polyphase filter bank is used to realize the function of matching filtering to complete the timing recovery because of its simple structure and low computational complexity. When there are many sub-band signals, channelizing the real signal based on the polyphase filter structure can be extremely effective. Great calculation savings. [0003] see figure 1 ,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/02
Inventor 刘双平刘洛琨黄开枝金梁张剑赖怡川季中恒张立志罗文宇刘世刚彭建华张汝云
Owner THE PLA INFORMATION ENG UNIV
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