author = {D. W\"{u}bben and Y. Lang},
  year = {2008},
  month = {Nov},
  title = {Near-Optimum Power Allocation for Outage Restricted Distributed MIMO Multi-Hop Networks},
  URL = {http://www.ieee-globecom.org/2008/},
  address={New Orleans, LA, USA},
The throughput of multi-hop communication systems can significantly be increased by the application of MIMO concepts. To utilize the physical resources in an efficient way, the development of appropriate power allocation strategies to meet the Quality-of-Service (QoS) is desired. In this paper the total transmit power of a MIMO multi-hop system is minimized under the constraint of a given end-to-end outage probability. The optimum power allocation corresponds to a convex optimization problem. In order to achieve an analytical solution, the original task is relaxed by stringent approximations and a simple closed-form near-optimum solution is proposed. As this Improved Approximated Power Allocation (IAPA) achieves excellent performance results, it is also very useful for investigating multi-hop systems analytically.

  booktitle={IEEE 2008 Global Telecommunications Conference (Globecom 2008)}