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A closed power allocation solution for outage restricted distributed MIMO multi-hop networks

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4 Author(s)
Yidong Lang ; Department of Communications Engineering, University of Bremen, Otto-Hahn-Allee 1, 28359, Germany ; Dirk Wubben ; Carsten Bockelmann ; Karl-Dirk Kammeyer

Power consumption and Quality-of-Service are the critical factors when developing resource allocation strategies for wireless networks. In order to minimize total transmission power while meeting the end-to-end outage probability requirement in a distributed MIMO multi-hop network, we will formulate the power allocation task as a convex optimization problem. By using some approximations to the optimization problem, we derive a novel near-optimal power allocation solution with lower complexity for distributed MIMO multi-hop networks. For the network with a large number of relaying nodes per virtual antenna array even a simple closed-form solution can be obtained. The simulation results show that our solution achieves a near-optimal performance.

Published in:

Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks and Workshops, 2008. WiOPT 2008. 6th International Symposium on

Date of Conference:

1-3 April 2008