基于近似计算的精度动态可调FFT处理器
马丽萍, 张骁煜, 白雨鑫, 陈鑫, 张颖

An Accuracy Dynamically Configurable FFT Processor Based on Approximate Computing
MA Liping, ZHANG Xiaoyu, BAI Yuxin, CHEN Xin, ZHANG Ying
表3 FFT处理器的5种计算模式
Tab.3 Five computation modes of FFT processer
模式 九级蝶形模块的j
(从模块1~9)
wmul QPDP Ssqnr
精确 (0, 0, 0, 0, 0, 0, 0, 0, 0) 14 11.33 55.49
近似0 (0, 0, 0, 0, 0, 0, 0, 0, 0) 10 9.34 51.88
近似1 (3, 3, 3, 3, 2, 2, 1, 1, 1) 10 8.89 49.45
近似2 (3, 3, 3, 3, 2, 2, 2, 2, 2) 10 9.20 46.12
近似3 (3, 3, 3, 3, 3, 3, 3, 3, 3) 8 8.67 37.26