Cart (Loading....) | Create Account
Close category search window
 

Energy Consumption in Downlink MIMO Relay Systems with Multiple Users

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Jie Xu ; Personal Commun. Network & Spread Spectrum Lab. (PCN&SS), Univ. of Sci. & Technol. of China (USTC), Hefei, China ; Ling Qiu

This paper focuses on the energy consumption problem in the downlink MIMO relay systems with multiple users. Power consumption under the target sum capacity is used as the energy efficient performance metric. Three transmission schemes, i.e. regenerate decode-and-forward (DF) relaying, linear non-regenerate relaying (SVD-ZFBF) and direct transmission with ZFBF are considered. The power model is developed at first, in which the power amplifier (PA) power, transmit circuit power at the base station (BS) and relay station (RS) and the receive circuit power at RS are taken into consideration. Then the power consumption expression for each scheme is derived. In order to optimize the power consumption, optimal rate allocation among different users is proposed and the energy efficient time allocation between the first and second phase for regenerate relaying is discussed. Simulation results show that optimal rate allocation can improve the energy efficiency significantly. Optimal time resource allocation of the DF scheme can further decrease the power consumption and it is the most promising scheme with the highest complexity. Furthermore, direct transmission benefits in the short distance scenario while relaying transmission benefits in the long distance scenario. Finally, the performance under different target sum capacity is discussed.

Published in:

Green Computing and Communications (GreenCom), 2010 IEEE/ACM Int'l Conference on & Int'l Conference on Cyber, Physical and Social Computing (CPSCom)

Date of Conference:

18-20 Dec. 2010

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.