In this paper we provide a polynomial-time 2- approximation algorithm for the all-to-all minimum cost range assignment problem in Ad-Hoc wireless networks that can be modelled by generic directed weighted graphs. The best already known approximation algorithm has a log-arithmic approximation factor [4].
Citation:
Miriam Di Ianni, Gianluca Rossi, "Minimum Energy Range Assignment in Heterogeneous Ad-Hoc Networks," ainaw, vol. 2, pp.121-126, 21st International Conference on Advanced Information Networking and Applications Workshops (AINAW'07), 2007