Constant coefficient multiplier is a very important part of 2D DCT/IDCT processor. This paper also presents a low power and constant coefficient multiplier with CSD coding and Wallace Tree addition algorithm.

• 常系数乘法器是该处理器的一个重要部件,文中基于并行乘法器结构设计了一种新型的低功耗常系数乘法器,它采用了CSD编码、Wallace Tree乘法算法,结合采用了截断处理、变数校正的优化技术,使得2D DCT/IDCT处理器整体性能有较大提高。