Resource reuse perfect reconstruction sub-band synthesis processing method

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...

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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 channelization processing For the purpose, the filter implementation of the system is given, which can only be used to calculate the reconstruction filter coefficients; literature 3 and 4 only give the design and performance analysis of the modulation filter, and can only be used to calculate the reconstruction filter coefficients

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