复数FIR滤波器的设计

复数有限长单位冲激响应滤波器用于对二维复信号的滤波,涉及大量的复数运算,因此它的结构比实数滤波器复杂得多。文章从算法上优化了复数滤波器的结构,并采用DSP Builder和配套的电子设计自动化软件完成了现场可编程门阵列的复数滤波器的设计。与其它方案相比该滤波器不用过多分析硬件电路,滤波器的建模、仿真与设计可以同时进行,大大降低了设计难度,缩短了设计周期。

Design of Complex Finite Impulse Response Filter

A large amount of complex calculation will be performed when complex finite impulse response filter is applied to filter complex signal.Therefore,its construction is more complex than a real number filter.In the paper,a new scheme is presented,which combines DSP Builder with EDA Tools and optimizes the construction of complex filter.It is implemented with FPGA.Compared with other schemes,this scheme has the advantage that simulation and design can be conducted simultaneously without consideration of the circuit and modeling for the filter.As a result,the difficulties in the design are greatly reduced and the design period is shortened.