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Resource reuse perfect reconstruction sub-band analyzer

A technology of complete reconfiguration and resource reuse, applied in the field of complete reconfiguration subband analyzers, can solve problems such as the implementation structure is not clearly given, and achieve the effects of saving development time, improving design efficiency, and reducing hardware resource overhead

Active Publication Date: 2015-01-21
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

However, only the design and performance analysis of the modulation filter are given in the literature, and the specific implementation structure is not clearly given.

Method used

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  • Resource reuse perfect reconstruction sub-band analyzer
  • Resource reuse perfect reconstruction sub-band analyzer
  • Resource reuse perfect reconstruction sub-band analyzer

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Embodiment Construction

[0030] In the polyphase structure of a standard subband analyzer, such as figure 1 As shown, D represents the number of branches, and K represents the multiple of speed reduction. If you want to do 2 m If the road splits, you need to have 2 m polyphase branch, each branch needs to independently perform sign adjustment, polyphase branch filtering and complex multiplication, and the order of each polyphase branch analysis filter is: subband filter order / 2 m, the standard structure requires a total of 2 m sign adjustment modules, 2 m a polyphase branch filter module and 2 m complex multiplication module, the implementation structure proposed by the present invention can perform 2 resources m Double multiplexing, only need 1 sign adjustment module, 1 polyphase branch filter module (composed of N-way multiplication module and addition module) and 1 complex multiplication module to complete the function of the standard subband analyzer structure.

[0031] Such as figure 2 As...

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Abstract

A resource reuse perfect reconstruction sub-band analyzer comprises an interpolation module, a 2m dot symbol adjusting module, an FIFO module, an N-way multiplication module, an N-way addition module, a complex multiplication module, a sub-band filter coefficient table, a complex multiplication coefficient table, a 2m dot FFT module and a perfect filter factor adjusting module. The resource reuse perfect reconstruction sub-band analyzer can conduct 2m times reuse on hardware resources, the expenditure of hardware resources is lowered, the structure is simple and universal, parameter configuration is flexible, the technological indexes such as the number of ways, the speed and the bandwidth for sub-band analysis can be rapidly changed, and the resource reuse perfect reconstruction sub-band analyzer is suitable for various bandwidths and speeds and capable of being widely applied to mobile satellite communication systems, software-based processing transponder satellite systems, ground face mobile communication systems and various data collecting systems.

Description

technical field [0001] The present invention relates to a sub-band analyzer based on a fully reconstructed polyphase filter structure, especially a subband analyzer capable of performing 2 m The fully reconfigured subband analyzer can be used in mobile satellite communication systems, software processing transponder satellite systems, ground mobile communication systems and various data collection systems. Background technique [0002] The ground-based beamforming system forms beams on the ground, and it needs to transmit the signals received or transmitted by hundreds of feed sources on the star between the satellite and the ground in real time. Compared with the on-board beamforming system, the ground-based beamforming system can greatly improve the flexibility of beamforming. After the satellite is in orbit, it can flexibly and quickly add, eliminate and reconfigure spot beams to adapt to different orbital positions and business changes. and new applications; complex sig...

Claims

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Application Information

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IPC IPC(8): H04L5/00
CPCH04B1/001
Inventor 马楠张璐张宁张映南楼大年
Owner XIAN INSTITUE OF SPACE RADIO TECH
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