By Topic

Constrained resource allocation for OFDMA cognitive radio networks with primary users activity consideration

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
$33 $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)
Felix Brah ; IEMN-DOAE CNRS-UMR 8520, Université de Lille Nord de France, UVHC, F-59313 Valenciennes, France ; Iyad Dayoub ; Luc Vandendorpe

In this paper, we consider resource allocation for downlink OFDMA-based cognitive radio (CR) networks. Instead of using only channel information, the statistics of the sensing information conditioned on the primary user (PU) activity is also incorporated in the design and the optimization of the resource allocation. The objective is to maximize the ergodic weighted sum-rate under total power constraint and a per subcarrier based interference power constraint to protect primary users. We develop an optimal solution method and propose a closed-form suboptimal solution with a complexity of O(KN) for K users and N subcarriers. Simulation results are provided to compare the performance of this method with other allocation schemes and to illustrate the trade-off between maximized ergodic weighted sum rate and the constraints.

Published in:

2012 International Symposium on Wireless Communication Systems (ISWCS)

Date of Conference:

28-31 Aug. 2012