高速低功耗自适应滤波器的设计

High Speed Processing and the Low Power Loss the Auto-adapted Filter Design

自适应滤波器在通信、雷达、图像和语音处理等领域有着广泛应用,但目前利用可编程逻辑器件实现的自适应滤波器,硬件结构复杂,难以满足高速处理和低功耗的要求。基于分组正则有符号数制(CSD),采用改进的简单符号LMS算法和转置的滤波器结构设计新型自适应滤波器,有效简化了电路,实现高吞吐量和低功耗。经验证,采用改进算法结构的滤波器功耗仅为传统结构的35%。

The auto-adapted filter in domain and so on correspondence, radar, picture and pronunciation processing has the widespread application, but at present uses the auto-adapted filter which the programmable logical component realizes, the hardware architecture is complex, satisfies high speed processing and the low power loss request with difficulty. This article has the mark notational system based on the grouping regular (CSD), uses filter structure design new auto-adapted filter which the improvement the simple mark LMS algorithm and transposes, effectively simplified the electric circuit, has realized the high volume of goods handled and the low power loss. After the confirmation, uses the improvement algorithm structure the filter power loss only is the traditional structure 35%.