tailieunhanh - Báo cáo hóa học: " Research Article Link Quality-Based Transmission Power Adaptation for Reduction of Energy Consumption and Interference"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Link Quality-Based Transmission Power Adaptation for Reduction of Energy Consumption and Interference | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 920131 17 pages doi 2010 920131 Research Article Link Quality-Based Transmission Power Adaptation for Reduction of Energy Consumption and Interference Jinglong Zhou Martin Jacobsson and Ignas Niemegeers Faculty of Electrical Engineering Mathematics and Computer Science Delft University of Technology . Box 5031 2628 CD Delft The Netherlands Correspondence should be addressed to Jinglong Zhou Received 28 May 2010 Accepted 1 September 2010 Academic Editor Lin Cai Copyright 2010 Jinglong Zhou et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Today many wireless devices are mobile and battery powered. Based on the fact that battery capacity is still limited energy saving is an important issue in wireless communication. Meanwhile the number of wireless devices continues to increase and this creates interference problems between wireless devices. In this paper we look at transmission power control and propose a mechanism that tries to achieve minimum energy consumption or emission under any circumstance. Lower transmission power levels may result in more retransmissions but in total energy consumption or emission still can be reduced in many scenarios. To evaluate the performance of our mechanism we used real wireless channels in an indoor environment to carry out measurements. The measurement results indicate that a significant amount of energy consumption or emission reduction can be achieved for the transmitter in most scenarios compared to using a fixed transmission power level for all packets. 1. Introduction Plenty of wireless devices use battery-based power but the battery technology does not keep up. To increase device service duration saving power is .