23 citations · 322 across the 61 of their papers we have counts for
5 papers · 1 filter
Adaptive Downlink CoMP in Heterogeneous Cellular Networks with Imperfect Overhead Messaging
Chun-Hung Liu
Coordinated multi-point (CoMP) transmission is an effective means of improving network throughput in heterogeneous cellular networks (HetNets). However, its performance is seriousl…
On the Minimum Edge-Density of 4-Critical Graphs of Girth Five
Chun-Hung Liu, Luke Postle
We prove that if G is a 4-critical graph of girth at least five then |E(G)|>=(5|V(G)|+2)/3. As a corollary, graphs of girth at least five embeddable in the Klein bottle or torus ar…
Excluding subdivisions of bounded degree graphs
Chun-Hung Liu, Robin Thomas
Let be a fixed graph. What can be said about graphs that have no subgraph isomorphic to a subdivision of ? Grohe and Marx proved that such graphs satisfy a certain s…
Edge Roman domination on graphs
Gerard J. Chang, Sheng-Hua Chen, Chun-Hung Liu
An edge Roman dominating function of a graph is a function satisfying the condition that every edge with is adjacent to some e…
Optimal Discrete Power Control in Poisson-Clustered Ad Hoc Networks
Chun-Hung Liu, Beiyu Rong, Shuguang Cui
Power control in a digital handset is practically implemented in a discrete fashion and usually such a discrete power control (DPC) scheme is suboptimal. In this paper, we first sh…