Lagrange Multiplier Based Fair Resource Allocation for MIMO-OFDMA Systems

Authors:
Dou Ni;Fangjiong Chen;Cunmei Ji
Affiliations:
-;-;-
Venue:
NSWCTC '09 Proceedings of the 2009 International Conference on Networks Security, Wireless Communications and Trusted Computing - Volume 01
Year:
2009

Citing 0
Cited 1

Optimal resource management in OFDMA wireless networks to support multimedia traffic

Proceedings of the 2010 ACM multimedia workshop on Mobile cloud media computing

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Abstract

In this paper, we propose a subcarrier and power allocation algorithm for Multiple-Input-Multiple-Output Orthogonal-Frequency-Division-Multiple-Access (MIMO-OFD MA) systems with channel state information available at the transmitter. Fairness constraint is applied to limit the maximum and minimum number of subcarriers for all users. A Lagrange multiplier method is applied to solve the constrained optimization problem. Solving this optimization problem require multi-dimensional searching. A modified searching method is proposed to improve the convergence speed.