无约束法设计完全重构M带滤波器组

Design for PR M-channel Filter Banks Without Constraint

本文提出了一种新的正交和双正交完全重构M带滤波器组的设计方法 .这种方法是建立在多项式分解基础之上 ,可在无约束条件下设计 ,所设计的滤波器组具有结构化完全重构特点 ,对于双正交滤波器组还可以方便设计系统时延 .和已有的方法相比 ,新方法具有低设计复杂度特点 .文中还描述了设计过程 ,最后给出了设计例子和结果 .

This paper proposes a new method for designing orthogonal and biorthogonal M-channel structurally perfect reconstruction (PR) Cosine-Modulated filter banks (CMFB) without constraint. To guarantee condition of CMFB PR and adjust overall input-output delay, the structure based on the lifting scheme is used in proposed method. The new method is superior to existed methods in low design complexity. Finally some examples are given to illustrate the method.