通信标准的不断发展演进及多样化要求无线通信设备对多模式、软件无线电的支持,同时功耗也成为了此类设备中关键因素.在分析数字前端的基础上,优化了梳状滤波器实现,通过改善传递函数使小数率滤波器等电路可以工作在更低的频率并去除了多级结构中的半带滤波器,从而减少软件无线电下数字前端速率变化电路的功耗,提出了新的用于软件无线电通信设备的数字前端加速电路设计方法.结果表明,本文提出的优化方法能在不降低灵活性、面积、抗干扰能力等性能的条件下减少电路的运算量降低功耗. The evolving and diverse communication standards require that wireless communication devices support multi-mode, software radios, and power consumption has also become a key factor in such devices. Based on the analysis of the digital front-end, the comb filter is optimized , By improving the transfer function so that the fractional-order filter circuit can work at lower frequencies and remove the half-band filter in multi-level structure, thereby reducing the power consumption of digital radio front-end rate change circuit under software radio, a new The design method of digital front-end accelerating circuit for software radio communication equipment shows that the proposed optimization method can reduce the power consumption of the circuit without reducing the flexibility, area and anti-jamming performance.