基于FRM的低复杂度频谱感知与干扰结构设计

Low-Complexity Spectrum Sensing and Jamming Structure Design Based on FRM

摘要:

针对传统窄过渡带信道化感知与干扰一体化结构存在的计算复杂度高的问题，采用频率响应屏蔽（frequency response masking，FRM）技术对信道化感知与干扰一体化结构进行了优化。基于FRM技术构造了低复杂度窄过渡带原型滤波器，并对其进行多相分解，得到可重构的信道化结构。仿真分析和实验结果表明：提出的基于FRM的信道化感知与干扰一体化结构设计正确，可以实现多信号同时处理和干扰；相比于传统窄过渡带信道化感知与干扰一体化结构，所提结构的计算复杂度降低了58.72%。该结构在电磁频谱感知与干扰系统中具有一定的推广应用价值。

Abstract:

To address the high computational complexity of the traditional narrow transition band channelized sensing and jamming integrated structure, the frequency response masking (FRM) technology was employed to optimize the channelized sensing and jamming integrated structure. By using FRM technology, a low-complexity prototype filter with narrow transition band was constructed, which was polyphase-decomposed to achieve a reconfigurable channelized structure. Simulation analysis and experimental results demonstrate that the proposed FRM-based channelized sensing and jamming integrated structure is correctly designed and capable of simultaneous multi-signal processing and jamming. Compared to the traditional narrow transition band channelized sensing and jamming integrated structure, the proposed structure’s computational complexity is reduced by 58.72%. The proposed structure has a certain application value in electromagnetic spectrum sensing and jamming systems.