Title :
Power allocation for outage rate maximization in OFDM relay links
Author :
Biyanwilage, Shashika ; Gunawardana, Upul ; Liyanapathirana, Ranjith
Author_Institution :
Sch. of Comput., Univ. of Western Sydney, Sydney, NSW, Australia
Abstract :
The power allocation problem in a two-hop OFDM amplify-and-forward (AF) relay link is studied when the available channel state information (CSI) is an outdated, but correlated version of the actual instantaneous CSI. We propose a power loading scheme to maximize the outage rate. The outage rate achieved by the proposed approach is compared with uniform power allocation and instantaneous rate maximization to study the effectiveness of adaptive power loading when the available CSI is outdated. Results confirm that the proposed method achieves higher outage rate than the other two methods.
Keywords :
OFDM modulation; amplify and forward communication; optimisation; wireless channels; CSI; amplify-and-forward relay link; channel state information; instantaneous rate maximization; orthogonal frequency division multiplexing; outage rate maximization; power allocation problem; power loading scheme; two-way OFDM AF relay link; Approximation methods; Loading; Manganese; OFDM; Optimization; Relays; Resource management;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4673-2566-0
Electronic_ISBN :
2166-9570
DOI :
10.1109/PIMRC.2012.6362655
