Title :
A fast and energy efficient binary-to-pseudo CSD converter
Author :
Yajuan He ; Ziji Zhang ; Bin Ma ; Jinpeng Li ; Shaowei Zhen ; Ping Luo ; Qiang Li
Author_Institution :
Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
The canonical signed digit (CSD) coding is widely used in digital arithmetic operations due to its property that there is no adjacent nonzero digits in the encoded numbers. However, the benefits of the CSD coding may be faded because of the recursive conversion process from the binary representations. This paper presents a novel pseudo CSD coding method, which takes the merits of CSD, while simplifies the conventional conversion process. The simulation results indicate that the proposed converter can achieve at least 31.8% speed improvement and 42.9% energy reduction for a 16-bit binary operand at 1.2V in a 0.13-μm CMOS technology. It could run even faster than the competitors when the operand length increases.
Keywords :
CMOS integrated circuits; binary codes; digital arithmetic; recursive estimation; CMOS technology; binary representation; canonical signed digit; digital arithmetic operations; energy efficient binary-to-pseudo CSD converter; pseudo CSD coding method; recursive conversion process; size 0.13 mum; voltage 1.2 V; Circuit synthesis; Complexity theory; Delays; Encoding; Energy consumption; Energy efficiency; Simulation; MSD; fast; multiplication; pseudo CSD coding;
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7168764