Title :
A power reduction technique based on the microscopic dynamic voltage scaling (DVS) of multimedia processors in wireless communication terminal
Author :
Kim, Byoung IL ; Chang, Tae Gyu
Author_Institution :
Sch. of Electr. & Electron. Eng., Chung-Ang Univ., Seoul
Abstract :
The paper proposes a DVS method, which effectively reduces the power consumption of multimedia signal processor. Analytical expressions for effective range of power saving efficiency obtained with the assumption of a Gaussian distribution for the frame-based computational burden of the multimedia processor are derived. A closed form solution for the power saving factor is obtained in terms of the mean and standard deviation of the distribution. An MPEG-2 audio/video decoder algorithm is tested on Xscale processor for experimental verification of the power saving due to the proposed DVS approach. The experimental results with diverse MPEG-2 audio/video files show about 35% power saving efficiency
Keywords :
Gaussian distribution; audio coding; data compression; digital signal processing chips; energy conservation; multimedia systems; video coding; DSP; Gaussian distribution; MPEG-2 audio decoder algorithm; MPEG-2 video decoder algorithm; Xscale processor; low power; microscopic dynamic voltage scaling; multimedia signal processor; power consumption reduction; power reduction; power saving efficiency; wireless communication terminal; Closed-form solution; Decoding; Distributed computing; Dynamic voltage scaling; Energy consumption; Gaussian distribution; Microscopy; Signal processing; Voltage control; Wireless communication; DSP; MPEG; low power; voltage scaling;
Conference_Titel :
Internet, 2005.The First IEEE and IFIP International Conference in Central Asia on
Conference_Location :
Bishkek
Print_ISBN :
0-7803-9179-9
DOI :
10.1109/CANET.2005.1598187
