Proceedings of the Korean Institute of Information and Commucation Sciences Conference (한국정보통신학회:학술대회논문집)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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MIMO Two-way Cooperative Relay to Improve End to End Capacity in Non-equidistant Topology

  • Niyizamwiyitira, Christine (Korea University of Technology and Education, Department of Electrical and Electronics Engineering) ;
  • Kang, Chul-Gyu (Korea University of Technology and Education, Department of Electrical and Electronics Engineering) ;
  • Oh, Chang-Heon (Korea University of Technology and Education, Department of Electrical and Electronics Engineering)
  • ;
  • 강철규 (한국기술교육대학교 전기전자공학과) ;
  • 오창헌 (한국기술교육대학교 전기전자공학과)
  • Published : 2010.10.27
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Abstract

This paper proposes MIMO two-way cooperative relay scheme to optimize the end to end capacity in wireless multi-hop mesh network. The basic idea is to perform data transmission via multi-hop relay nodes, in equidistant topology, this method is quite efficient. However, on one hand this topology is very rare in practical situation, on the other hand, in real practical situation where the topology is most likely non equidistant, the end to end capacity significantly degrades due to bottleneck link caused by uneven SNR. Moreover, the end to end capacity degrades at high SNR due to overreach interference from far nodes existing in multi-hop relay networks. In this paper, MIMO two-way cooperative relay in the region of non equidistant nodes is found efficient to improve the end to end capacity. The proposed scheme is validated using numerical simulation.

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