IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516
Special Section on 5G Radio Access Networks - Part II: Multi-RAT Heterogeneous Networks and Smart Radio Technologies
Power Allocation for Ergodic Capacity and Outage Probability Tradeoff in Cognitive Radio Networks
Qun LIDing XU
Author information
JOURNAL RESTRICTED ACCESS

2015 Volume E98.B Issue 10 Pages 1988-1995

Details
Abstract

The problem of power allocation for the secondary user (SU) in a cognitive radio (CR) network is investigated in this paper. The primary user (PU) is protected by the average interference power constraint. Besides the average interference power constraint at the PU, the transmit power of the SU is also subject to the peak or average transmit power constraint. The aim is to balance between the goal of maximizing the ergodic capacity and the goal of minimizing the outage probability of the SU. Power allocation schemes are then proposed under the aforementioned setups. It is shown that the proposed power allocation schemes can achieve high ergodic capacity while maintaining low outage probability, whereas existing schemes achieve either high ergodic capacity with high outage probability or low outage probability with low ergodic capacity.

Content from these authors
© 2015 The Institute of Electronics, Information and Communication Engineers
Previous article Next article
feedback
Top