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Evaluation of Outage Restricted Distributed MIMO Multi-Hop Networks by the Improved Approximative Power Allocation

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1 Author(s)
Wubben, D. ; Dept. of Commun. Eng., Bremen Univ., Bremen

The concept of virtual antenna array (VAA) is a promising approach to apply MIMO concepts in relaying systems. In order to fulfill a given quality-of-service (QoS) requirement while reducing the power consumption of the entire system, efficient resource allocation strategies have to be developed. The optimum power allocation solution corresponds to a convex optimization problem. To achieve an analytical solution, the approximative approach IAPA (improved approximative power allocation) has been proposed by the author. Within this paper this closed-form solution is further analyzed and analytical expressions for the power allocation in case of symmetric relaying networks are derived. Thereby, an approach for analyzing and optimizing different multi-hop scenarios is developed.

Published in:

Vehicular Technology Conference, 2008. VTC 2008-Fall. IEEE 68th

Date of Conference:

21-24 Sept. 2008