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Fairness Based Resource Allocation for Multi-User MIMO-OFDM Systems

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2 Author(s)
Morris, P.D. ; Dept. of Electr. & Electron. Eng., Melbourne Univ., Carlton, Vic. ; Athaudage, C.R.N.

This paper investigates the performance of a weighted proportional fair (WPF) based resource allocation algorithm for future multi-user (MU) multiple-input multiple-output (MIMO) orthogonal frequency-division multiple-access (OFDMA) systems with frequency-selective broadband channels. In future networks algorithms should be designed to allocate the system's resources (time, frequency, space and power) in a manner that exploits multi-user diversity and ensures each user is treated fairly. The proposed algorithm extends the original proportional fair (PF) scheme, which was designed for single-antenna single-carrier systems, to the MIMO-OFDMA downlink such that individual user's quality of service (QoS) requirements are satisfied in terms of requested bit-rate and bit error rate (BER). Monte Carlo simulation results indicates that extending the algorithm to a frequency- and space-division network produces the desirable characteristics of a fair and efficient algorithm

Published in:

Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd  (Volume:1 )

Date of Conference:

7-10 May 2006