483 search results - page 17 / 97 » On perfectness of sums of graphs |
CC
2006
Springer
13 years 8 months ago
2006
Springer
The sum of a coloring is the sum of the colors assigned to the vertices (assuming that the colors are positive integers). The sum (G) of graph G is the smallest sum that can be ach...
SIAMDM
2008
13 years 8 months ago
2008
An n-lift of a digraph K, is a digraph with vertex set V (K)
ICC
2007
IEEE
14 years 3 months ago
2007
IEEE
— We consider a multi-user MIMO downlink where the transmitter has only estimates of the channel while the receivers have perfect channel information. The impact of channel estim...
TWC
2010
13 years 3 months ago
2010
We develop a realistic model for multiple-input multiple-output (MIMO) broadcast channels, where each randomly located user's average SNR depends on its distance from the tran...
JGAA
2006
13 years 8 months ago
2006
In this paper we introduce a direct motivation for solving the minimum 2-sum problem, for which we present a linear-time algorithm inspired by the Algebraic Multigrid approach whi...