32bit定点定值小数乘法器的算法优化及实现  

Algorithm Optimization and Realization for 32bit Fixed-point and Fixed Value Decimal Multiplier

作　　者：刘诚[1] 罗胜钦[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《电子与封装》2010年第12期16-19,共4页Electronics & Packaging

摘　　要：小波理论和分析方法极大地促进了应用科学研究。应用领域包括:数学领域的许多学科;信号分析、图像处理;量子力学、理论物理;军事电子对抗与武器的智能化;计算机分类与识别;音乐与语言的人工合成;医学成像与诊断;地震勘探数据处理;大型机械的故障诊断等方面。CDF9/7小波更是图像编解码的首选变换核。它使用到了大量的小数乘法器,然而传统的滤波器结构都是把乘法器看成一个整体来设计,导致流水线不够深,以至于处理速度达不到很高的层次。文章首先对CDF9/7小波变换式进行变换,得到一个并行结构,并且对每一个乘法器使用Wallace Tree和CLA相结合的实现方法进行设计。最后通过仿真、功能验证和逻辑综合,证明该设计功能稳定,并且在速度上有很大的提升。Wavelet theory and its analysis techniques have promoted the research of practical science greatly. Its application areas are,for example,mathematics,signal analysis,image processing,physics,military and weapons,computer identify,synthesis of voice,medical analysis,earthquake detector and so on.CDF9/7 wavelet theory is the best choice for image processing.It consists of a lot of decimal multipliers,while the traditional filter sees multiplier as a whole when designing making the speed of processing is not fast enough. We first introduce a transform of the traditional wavelet theory and it has a parallel architecture.Then we put forward a realization method based on the combination of Wallace and CLA.By simulation,function verification and local synthesis,the design is proved to be steady and have a big promotion in speed.

关 键 词：WALLACE TREE CLA CSD乘法器 CDF9/7 

分 类 号：TN402[电子电信—微电子学与固体电子学]