Minimum bit error rate multiuser transmission designs using particle swarm optimisation

Authors:
W. Yao;S. Chen;S. Tan;L. Hanzo
Affiliations:
School of Electronics and Computer Science, University of Southampton, Southampton, UK;School of Electronics and Computer Science, University of Southampton, Southampton, UK;School of Electronics and Computer Science, University of Southampton, Southampton, UK;School of Electronics and Computer Science, University of Southampton, Southampton, UK
Venue:
IEEE Transactions on Wireless Communications
Year:
2009

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Abstract

We consider the downlink of a multiuser system equipped with multiple antennas transmitting to multiple single-antenna mobile receivers. Particle swarm optimisation (PSO) is invoked to solve the constrained nonlinear optimisation problem for the minimum bit error rate (MBER) multiuser transmitter (MUT). The proposed PSO aided symbol-specific MBER-MUT and average MBER-MUT schemes provide improved performance in comparison to the conventional minimum mean-square-error MUT scheme, while imposing a reduced complexity compared to the state-of-the-art sequential quadratic programming based symbol-specific MBER-MUT and average MBER-MUT schemes, respectively.