Design of Cosine-modulated Filter Banks with Perfect Reconstruction

• 作者: JIAOLicheng SHUIPenglang ZHANGZijing
• 来源期刊: 电子学报(英文版)
• 学科: 工学
• 关键词: 滤波器组 余弦调制 拉格朗日倍增器 完全重建
• 年，卷（期）: 2005,（1）
• 页码范围: 103-105
• 页数: 3页
• 分类号: TN713
• 语种: 中文

摘要

An efficient iterative Lagrange multiplier approach is developed in this paper to design cosinemodulated FIR filter banks with perfect reconstruction.The objective function is formulated as a quadratic function of the prototype filter coefficients whose minimum point can be obtained using the Lagrange multiplier approach in each step. This approach has high design efficiency and is not sensitive to changes in the initial prototype filter coefficients. A design example is presented to demonstrate the effectiveness of the new method.