Title :
Signal activity and power consumption reduction using the logarithmic number system
Author :
Paliouras, V. ; Stouraitis, T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Patras Univ., Greece
Abstract :
In this paper, the logarithmic number system (LNS) is exploited to save power. The equivalence of an LNS to a linear fixed-point system is initially explored and a related theorem is introduced. Then, activity is studied for both uniform, and Gaussian correlated input distributions. LNS is shown to reduce the average bit assertion probability by more than 60%, in certain cases, over an equivalent linear representation. The impact of LNS to power dissipation through architecture simplification is also discussed
Keywords :
Gaussian distribution; digital arithmetic; low-power electronics; probability; Gaussian correlated input distributions; architecture simplification; average bit assertion probability; linear fixed-point system; logarithmic number system; power consumption reduction; power dissipation; signal activity; Arithmetic; Circuits; Clocks; Electronic equipment; Energy consumption; Frequency; Minimization; Power dissipation; Power engineering and energy; Power engineering computing;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921155
