Title :
On the selection of arithmetic unit structure in voltage overscaled soft digital signal processing
Author :
Yang Liu ; Tong Zhang
Author_Institution :
Electr., Comput., & Syst. Eng. Dept., Rensselaer Polytech. Inst., Troy, NY, USA
Abstract :
A soft digital signal processing (DSP) design paradigm has been recently proposed to reduce the energy consumption of DSP systems through voltage overscaling. This paper shows that the selection of arithmetic unit structure can be an important and non-trivial issue in soft DSP system design. We present an optimal formulation and propose sub-optimal low-complexity approximations for selecting the appropriate arithmetic unit structure in voltage overscaled signal processing systems. We further present a case study on choosing the appropriate MAC (multiply-accumulate) structure in voltage overscaled FIR (finite impulse response) filter.
Keywords :
FIR filters; computational complexity; digital signal processing chips; power aware computing; arithmetic unit structure; energy consumption; finite impulse response filter; multiply-accumulate structure; soft digital signal processing design paradigm; sub-optimal low-complexity approximations; voltage overscaling; Costs; Degradation; Digital arithmetic; Digital signal processing; Energy consumption; Finite impulse response filter; Signal design; Signal processing; Signal processing algorithms; Voltage; low power; signal processing; voltage overscaling;
Conference_Titel :
Low Power Electronics and Design (ISLPED), 2007 ACM/IEEE International Symposium on
Conference_Location :
Portland, OR
Electronic_ISBN :
978-1-59593-709-4
DOI :
10.1145/1283780.1283834
