Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 2005.11a
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- Pages.155-158
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- 2005
Investigation of Power Saving Efficiency for the OFDM Based Multimedia Communication Terminal
OFDM 기반 광대역 멀티미디어 단말의 전력절감 효율 분석에 관한 연구
- Moon, Jae-Pil (School of Electrical and Electronics Engineering, Chung-Ang University) ;
- Lee, Eun-Seo (School of Electrical and Electronics Engineering, Chung-Ang University) ;
- Kim, Dong-Hwan (School of Electrical and Electronics Engineering, Chung-Ang University) ;
- Lee, Jae-Sik (School of Electrical and Electronics Engineering, Chung-Ang University) ;
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Chang, Tae-Gyu
(School of Electrical and Electronics Engineering, Chung-Ang University)
- 문재필 (중앙대학교 전자전기공학부) ;
- 이은서 (중앙대학교 전자전기공학부) ;
- 김동환 (중앙대학교 전자전기공학부) ;
- 이재식 (중앙대학교 전자전기공학부) ;
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장태규
(중앙대학교 전자전기공학부)
- Published : 2005.11.26
Abstract
An invesitigation on power consumption of a mobile multimedia system using OFDM and MDVS technique is reported here. Analysis and simulation are performed to find the significances of proposed Microscopic Dynamic Voltage Scaling(MDVS) tehnique[4] on digital processor in terms of power saving. A study is also made to show power reduction in mobile multimedia system by incorporating OFDM modulation scheme in RF front-end. Finally, overall power consumption by functionally distinguished blocks ie. RF front-end, digital processor and human interface unit is shown here. Total power consumption is 8.2W for 2Mbps SD-quality WCDMA multimedia video service - the power consumption of digital processor is 3.9W(48%), the power consumption of RF front-end is 3.2W (36%), and the power consumption of interface is 1.8W(16%). Power saving of applying purposed MDVS technique is 35% in digital processor, and power saving of OFDM technique is 10-12dB in RF front-end.
Keywords