On the capacity improvement of multicast throughput in wireless ad hoc networks with physical-layer network coding

  • Authors:
  • Chen Chen;Lin Bai;Jianhua He;Haige Xiang;Jinho Choi

  • Affiliations:
  • Peking University, Beijing, P.R. China;Swansea University, Swansea, United Kingdom;Swansea University, Swansea, United Kingdom;Peking University, Beijing, P.R. China;Swansea University, Swansea, United Kingdom

  • Venue:
  • Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
  • Year:
  • 2010

Quantified Score

Hi-index 0.00

Visualization

Abstract

This paper attempts to address the effectiveness of physical-layer network coding (PNC) on the capacity improvement for multi-hop multicast in random wireless ad hoc networks (WAHNs). While it can be shown that there is a capacity gain by PNC, we can prove that the per session throughput capacity with PNC is Θ ((nR(n))-1), where n is the total number of nodes, R(n) is the communication range, and each multicast session consists of a constant number of sinks. The result implies that PNC cannot improve the capacity order of multicast in random WAHNs, which is different from the intuition that PNC may improve the capacity order as it allows simultaneous signal reception and combination.