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Title

Joint allocation of subcarriers and transmit powers in a multiuser OFDM cellular network

Author(s)

Thanabalasingham, Thaya;  Hanly, Stephen V.;  Andrew, Lachlan L. H.;  Papandriopoulos, John

Abstract

In the present paper, we consider the problem of joint bandwidth (subcarriers) and power allocation for the downlink of a multi-user multi-cell OFDM cellular network. This resource allocation problem is formulated as a power minimization problem, subject to meeting the target rates of all users in the network. We develop a distributed solution to find the globally optimal allocation which determines the subcarrier and power allocation dynamically. In addition, we investigate the impact of reducing the complexity by reducing the number of degrees of freedom available in the optimization. In particular, we consider a static bandwidth allocation scheme, and a static power allocation scheme. The numerical results show that the penalty on network performance due to the reduction in the available degrees of freedom is not significant.

Publication type

Conference paper

Source

Proceedings of the IEEE International Conference on Communications (ICC 2006), Istanbul, Turkey, 11-15 July 2006, Vol. 1, pp. 269-274

Publication year

2006

Keyword(s)

Bandwidth;  Cellular neural networks;  Degrees of freedom;  Frequency allocation;  Multiuser detection;  Multiuser OFDM cellular network;  Optimisation;  Orthogonal frequency division multiplexing;  Power allocation;  Resource allocation;  Static bandwidth allocation

Publisher

IEEE

ISSN

0536-1486 (series ISSN)

ISBN

9781424403554, 1424403553

Publisher URL

http://dx.doi.org/10.1109/ICC.2006.254739

Copyright

Copyright © 2006 IEEE. Paper reproduced here in accordance with the copyright policy of the publisher.

Full text

Peer reviewed