Near-optimum power allocation for BER restricted multihop cooperative networks

Behrouz Maham, Are Hjørungnes

Research output: Chapter in Book/Report/Conference proceedingConference contribution

13 Citations (Scopus)

Abstract

Due to the limited energy supplies of nodes, in many applications like wireless sensor networks, energy-efficiency is crucial for extending the networks lifetime. We study the routing problem for multihop wireless ad hoc networks based on cooperative transmission. The source node wants to transmit messages to a single destination. Other nodes in the network may operate as relay nodes. In this paper, we propose a cooperative multihop routing for the purpose of power savings, constrained on a required bit error rate (BER) at the destination. Two efficient power allocation schemes are proposed, which depend only on the statistics of the channels. In the first scheme, each node needs to know only the local channel statistics, and can be implemented in a distributed manner. The second scheme is a centralized power control strategy, which has a higher energy efficiency, at the expense of more complexity and signalling overhead. It is shown that energy savings of 75% are achievable in line networks with 3 relays for BER = 10-4 constraint at the destination.

Original languageEnglish
Title of host publication2010 IEEE International Conference on Communications, ICC 2010
DOIs
Publication statusPublished - Aug 13 2010
Event2010 IEEE International Conference on Communications, ICC 2010 - Cape Town, South Africa
Duration: May 23 2010May 27 2010

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486

Other

Other2010 IEEE International Conference on Communications, ICC 2010
CountrySouth Africa
CityCape Town
Period5/23/105/27/10

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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  • Cite this

    Maham, B., & Hjørungnes, A. (2010). Near-optimum power allocation for BER restricted multihop cooperative networks. In 2010 IEEE International Conference on Communications, ICC 2010 [5501931] (IEEE International Conference on Communications). https://doi.org/10.1109/ICC.2010.5501931