An FFB optimization design method based on two-dimensional search algorithm for satellite communication channelizers

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发表日期：

2026年2月2日

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Wenxu Zhang,
Xiaoqi Zhao,
Zhongkai Zhao,
Fuli Sun,
Feiran Liu

摘要

In order to reduce the complexity of narrow transition bandwidth filter banks in satellite communication channelization and achieve resource savings, an optimization design method of the two-dimensional search algorithm-based fast filter bank (FFB-TDSA) is proposed in this paper. According to the design requirements for actual system applications, the optimization design method of fast filter bank (FFB) under the channelization performance constraint is presented. The proposed FFB-TDSA can achieve lower complexity and delay by determining the optimal number of stages and the optimal transition bandwidth of the FFB structure. The simulation results show that, compared to generalized frequency response masking, complex exponential modulation frequency response masking, and traditional FFB methods, the proposed FFB-TDSA method achieves reductions in computational complexity of 80.36 $\%$ $%$ , 82.34 $\%$ $%$ , and 42.91 $\%$ $%$ , respectively, as well as reductions in delay of 83.78 $\%$ $%$ , 85.71 $\%$ $%$ and 40.77 $\%$ $%$ , respectively. Additionally, the cross-channel signals can be extracted effectively.