Resource reuse perfect reconstruction sub-band synthesis processing method

A completely reconfigurable and comprehensive processing technology, applied in the field of data transmission, can solve the problems that the filter order has a great influence and unfavorable engineering implementation, and achieves the effects of wide application range, complete reconfiguration, and flexible reconfiguration methods

Active Publication Date: 2015-10-07
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

For example, document 1 uses a uniform filter bank to realize non-uniform channelization processing, but the filter order is greatly affected by the number of channelization, which is not conducive to engineering implementation; document 2 can meet different bandwidths and non-uniform distribution of sub-band channelizat

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  • Resource reuse perfect reconstruction sub-band synthesis processing method
  • Resource reuse perfect reconstruction sub-band synthesis processing method
  • Resource reuse perfect reconstruction sub-band synthesis processing method

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0035] If the sub-band synthesizer of the standard polyphase structure in the prior art is adopted to perform 2 m If the path is combined with the path, it needs 2 m polyphase branches, and each branch has independent symbol adjustment, polyphase branch filtering and complex multiplication processing, and the subband synthesis processing method adopted in the present invention can perform 2 resources m Double multiplexing, only need to carry out sign adjustment, polyphase filtering, and complex multiplication processing on 1 channel signal, and then 2 channels can be realized m Combined road processing of the road sub-band.

[0036] Such as figure 1 As shown in the processing flow chart, the resource multiplexing complete reconstruction sub-band comprehensive processing method of the present invention includes the following steps:

[0037] (...

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Abstract

The present invention provides a resource reuse perfect reconstruction sub-band synthesis processing method. The method comprises the following steps of 1 carrying out the perfect filtering factor adjustment processing on an input signal; 2 carrying out the IFFT and the coefficient correction; 3 adopting N FIFO which are in head-to-tail ligation to carry out the data cache and output; 4 adopting a reconstruction filtering coefficient existing in a matrix to carry out the filtering process on the output data of the FIFO; 5 carrying out the extraction and symbol adjustment on a filtering output signal. The method can realize the 2m times reuse of the resources, and a resource reuse multiple is directly proportional with a sub-band number, namely, the larger is the sub-band number, the more is the resource reuse times, and the more obvious is the advantages of the present invention. A sub-band synthesizer realized by the method enables the hardware resource cost to be reduced substantially, is flexible in parameter configuration and wide in application range, and is suitable for the systems of different bandwidths and rates to carry out the sub-band synthesis.

Description

technical field [0001] The present invention relates to the technical field of data transmission, in particular to a method for comprehensively reconfiguring sub-bands for resource multiplexing, which can be applied to mobile satellite communication systems, software-based transponder satellite systems, ground mobile communication systems, and various data in the collection system. 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 signal processing such as ad...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L25/03
CPCH04L5/001H04L25/03
Inventor 张璐马楠张宁张映南楼大年
Owner XIAN INSTITUE OF SPACE RADIO TECH
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