DocumentCode
3280469
Title
Multi-User Water-Filling in Uplink OFDMA Systems
Author
Chang, Sunny ; Kim, Seong-Lyun
Author_Institution
Wireless Device Lab. Dong, Suwon
fYear
2008
fDate
March 31 2008-April 3 2008
Firstpage
1922
Lastpage
1926
Abstract
In this paper, we focus on the optimal power allocation problem in the multi-user uplink OFDMA system. For the purpose, based on the KKT conditions of the problem, we design suboptimal algorithms that may be implementable in an iterative and distributive manner. An important feature of our algorithm is that it takes the generated interference to the system into account. Numerical examples show that our algorithms outperform the others, in terms of total throughput, outage probability and energy efficiency.
Keywords
frequency division multiple access; iterative methods; probability; radio links; Karush-Kuhn-Tucker conditions; distributive manner; iterative manner; multiuser water-filling; optimal power allocation problem; outage probability; suboptimal algorithm design; uplink OFDMA systems; Base stations; Communications Society; Downlink; Interference; Iterative algorithms; Laboratories; OFDM; Power control; Resource management; Throughput;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless Communications and Networking Conference, 2008. WCNC 2008. IEEE
Conference_Location
Las Vegas, NV
ISSN
1525-3511
Print_ISBN
978-1-4244-1997-5
Type
conf
DOI
10.1109/WCNC.2008.342
Filename
4489373
Link To Document