应用于宽频带通信干扰对消的重构滤波器设计

Reconstructed filter design for broadband communicationinterference cancellation

围绕宽频带通信干扰对消的需求,提出了新的子带划分与重构框架,并对子带划分滤波器组与重构滤波器进行设计,简化了完全重构条件,使得重构滤波器具备过渡带幅度互补特性。仿真与实验结果表明,设计的重构滤波器可以有效降低重构后通信信号的误码率,并且解决了子带信号拼接过程中的频谱起伏现象。所提出的子带划分与重构框架及重构滤波器设计展现了良好的通信信号重构效果,可为宽频带干扰对消的子带划分与重构工程实践提供新的理论方法与技术路线。

A new subband division and reconstruction framework around the requirements of broadband communication interference cancellation was proposed,and the subband division filter banks and the reconstruction filter were designed,which simplified the conditions for complete reconstruction and made the reconstruction filter have the characteristics of complementary transition in band amplitude.The simulation and experiment results show that the reconstruction filter can effectively reduce the bit error rate of reconstructed communication signals and solve the spectrum fluctuation phenomenon in the process of subband signal splicing.Therefore,the subband division and reconstruction framework and the design of the reconstruction filter proposed can effectively reconstruct the frequency-hopping communication signal,which provide new technical route and theoretical method for subband division and reconstruction engineering practice of broadband interference cancellation.