By Topic

Energy-efficient relay selection based on the outage probabilities and power allocation algorithm in spectrum sharing networks

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

3 Author(s)
Zepan Yang ; Inst. of Broadband Access Network, Chongqing Univ. of Posts & Telecommun., Chongqing, China ; Xianzhong Xie ; Huo Wan

In spectrum sharing networks with relay cooperation, secondary users can get a chance to transmit their own signals by relaying primary signals without impacting the performance of the primary system. We use an amplify-and-forward (AF) protocol, firstly, proposing a new energy-efficient relay selection scheme based on the constraint of outage probabilities, which selects the optimal relay that minimizes the total transmit power of system; Secondly, we propose an optimal power allocation scheme at relay by analysing the outage probabilities for both the primary and secondary systems which gets a balance between the outage probabilities for the primary system and that for the secondary system. Simulation results show that the proposed scheme in this paper reduces the total transmit power much more than other common schemes when realizing spectrum sharing, which achieves the goal of energy-efficient green communications.

Published in:

Information Science and Technology (ICIST), 2012 International Conference on

Date of Conference:

23-25 March 2012