Research Article
An Energy Efficient Subchannel and Power Allocation Scheme for OFDMA Cellular Heterogeneous Networks
@INPROCEEDINGS{10.4108/icst.chinacom.2014.256243, author={Rong Chai and Jintao Li and Zhimin Guo and Huili Zhang}, title={An Energy Efficient Subchannel and Power Allocation Scheme for OFDMA Cellular Heterogeneous Networks}, proceedings={9th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={1}, keywords={macrocell femtocell energy efficiency cluster}, doi={10.4108/icst.chinacom.2014.256243} }- Rong Chai
Jintao Li
Zhimin Guo
Huili Zhang
Year: 2015
An Energy Efficient Subchannel and Power Allocation Scheme for OFDMA Cellular Heterogeneous Networks
CHINACOM
IEEE
DOI: 10.4108/icst.chinacom.2014.256243
Abstract
In this paper, an energy-efficient subchannel and power allocation scheme for a downlink marco-femto heterogeneous network is proposed. The optimization problem which maximizes the energy efficiency of all the FBSs subject to resource allocation constraints is formulated. To solve the formulated NP hard problem, we first apply clustering algorithm, which groups FBSs with interference being lower than required threshold into clusters, and then the optimal matching from clusters to subchannels is conducted. Based on the subchannel allocation strategy, optimal power allocation strategy can be obtained. Numerical results demonstrate the efficiency of proposed algorithm.
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