Low complexity subcarrier and power allocation algorithm for uplink OFDMA systems
Al-Imari, M, Xiao, P, Imran, MA and Tafazolli, R (2013) Low complexity subcarrier and power allocation algorithm for uplink OFDMA systems Eurasip Journal on Wireless Communications and Networking, April .
Available under License : See the attached licence file.
In this article, we consider the joint subcarrier and power allocation problem for uplink orthogonal frequency division multiple access system with the objective of weighted sum-rate maximization. Since the resource allocation problem is not convex due to the discrete nature of subcarrier allocation, the complexity of finding the optimal solution is extremely high. We use the optimality conditions for this problem to propose a suboptimal allocation algorithm. A simplified implementation of the proposed algorithm has been provided, which significantly reduced the algorithm complexity. Numerical results show that the presented algorithm outperforms the existing algorithms and achieves performance very close to the optimal solution.
|Divisions :||Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Communication Systems Research|
|Date :||8 April 2013|
|Identification Number :||10.1186/1687-1499-2013-98|
|Uncontrolled Keywords :||OFDMA, Radio resource allocation|
|Additional Information :||The original publication is available at http://jwcn.eurasipjournals.com/content/pdf/1687-1499-2013-98.pdf|
|Depositing User :||Symplectic Elements|
|Date Deposited :||21 May 2013 13:25|
|Last Modified :||16 Apr 2015 13:33|
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