TY - GEN
T1 - Multi-user water-filling in uplink OFDMA systems
AU - Chang, Sunny
AU - Kim, Seong Lyun
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=51649120888&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=51649120888&partnerID=8YFLogxK
U2 - 10.1109/wcnc.2008.342
DO - 10.1109/wcnc.2008.342
M3 - Conference contribution
AN - SCOPUS:51649120888
SN - 9781424419968
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 1922
EP - 1926
BT - WCNC 2008 - IEEE Wireless Communications and Networking Conference, Conference Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE Wireless Communications and Networking Conference, WCNC 2008
Y2 - 31 March 2008 through 3 April 2008
ER -
