摘要： 提出一种基于CSD编码的向量内积分布式计算结构CDA，将其应用于二维离散余弦变换(DCT)硬件设计，利用DCT变换矩阵的编码特点减少设计中加法器的数量及移位累加树的带宽。该结构在Chartered 0.13 μm工艺库上进行设计和综合，共用了31 528个晶体管和1 024 bit存储器，具有低功耗与高性能的特点，适用于图像视频等要求低功耗、实时处理的领域。

关键词: 离散余弦变换, 分布式算法, 低功耗

Abstract: This paper proposes a CSD-based architecture namely CDA for computing inner product when one of the input vectors is fixed, and designs 2-D Discrete Cosine Transform(DCT) architecture with it. By optimizing the transform matrix, it reduces the number of the adders and the band of the shifter/adder. It is designed and synthesized by Chartered 0.13 μｍ technology, and its cost is 31 528 transistors and 1 024 bit memory. Because the architecture is with low power and high performance, it is useful for image/video compression and transmission applications.

Key words: Discrete Cosine Transform(DCT), Distributed Arithmetic(DA), low power

中图分类号: 

• TP303