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Joint Route and Power Allocation in Cooperative-Multihop Networks

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4 Author(s)
JiangBo Si ; State Key Lab. of Integrated Services Networks, Xidian Univ., Xi''an ; Zan Li ; Zengji Liu ; Xiaofeng Lu

In this paper, we address the problem of joint optimization of route and power allocation in cooperative- multihop networks, where a source node wants to transmit a sequence of messages to a single destination node out of the range of direct transmission. We first study the optimal power allocation between the single source node and single relay with DF (decode and forward) protocol in multihop transmission. Then under the assumption that intermediate node can adaptively select transmission scheme between DT(direct transmission) and DF , a heuristic algorithm is proposed to find a good route and allocate power efficiently for the minimum outage probability with a given power budget. Finally, our simulation results show that cooperative-multihop transmission outperforms the non-cooperative-multihop transmission, and the proposed algorithm can achieve lower outage probability compared to the equal power allocation with shortest path.

Published in:

Circuits and Systems for Communications, 2008. ICCSC 2008. 4th IEEE International Conference on

Date of Conference:

26-28 May 2008

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