Optimal Power Analysis of Downlink Multi-User SA-MIMO Systems Use

Jian Xin Dai; Jun Zhou; Jie Qi; Ming Chen; Tao Yuan; Jun Zhao

doi:10.4028/www.scientific.net/AMM.614.530

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 614Optimal Power Analysis of Downlink Multi-User...

Optimal Power Analysis of Downlink Multi-User SA-MIMO Systems Use

Abstract:

This paper investigated the problem of transmit power minimization to meet the users’ outage probability constraints in downlink smart antennas-MIMO (SA-MIMO) systems. Firstly, a downlink multi-user SA-MIMO system model is established, and the transmit power optimization problem is formulated. The optimization problem jointly optimizes the beam-forming vectors and user outage probability. Then, the outage-based optimization problem is transformed into a geometric programming problem in which the beam forming vectors were obtained by maximum diagonal element (MDE) rule. Some numerical results show that the proposed method in this paper is viable and the transmit power in downlink SA-MIMO systems significantly descreases relative to traditional MIMO systems.

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Periodical:

Applied Mechanics and Materials (Volume 614)

Pages:

530-534

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.614.530

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Online since:

September 2014

Authors:

Jian Xin Dai*, Jun Zhou, Jie Qi, Ming Chen, Tao Yuan, Jun Zhao

Keywords:

Beam-Forming, MIMO, Outage Probability, Smart Antennas, Transmit Power Minimization

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