Sciweavers

1695 search results - page 270 / 339
» Linear, Polynomial or Exponential
Sort
View
CORR
2006
Springer
127views Education» more  CORR 2006»
15 years 1 months ago
Space Division Multiple Access with a Sum Feedback Rate Constraint
On a multiantenna broadcast channel, simultaneous transmission to multiple users by joint beamforming and scheduling is capable of achieving high throughput, which grows double log...
Kaibin Huang, Robert W. Heath Jr., Jeffrey G. Andr...
FMSD
2006
104views more  FMSD 2006»
15 years 29 days ago
Some ways to reduce the space dimension in polyhedra computations
Convex polyhedra are often used to approximate sets of states of programs involving numerical variables. The manipulation of convex polyhedra relies on the so-called double descri...
Nicolas Halbwachs, David Merchat, Laure Gonnord
93
Voted
COMBINATORICA
2007
92views more  COMBINATORICA 2007»
15 years 29 days ago
Codes And Xor Graph Products
What is the maximum possible number, f3(n), of vectors of length n over {0, 1, 2} such that the Hamming distance between every two is even? What is the maximum possible number, g3...
Noga Alon, Eyal Lubetzky
JOI
2008
51views more  JOI 2008»
15 years 28 days ago
International collaboration in science and the formation of a core group
International collaboration as measured by co-authorship relations on refereed papers grew linearly from 1990 to 2005 in terms of the number of papers, but exponentially in terms ...
Loet Leydesdorff, Caroline S. Wagner
SIAMDM
2008
105views more  SIAMDM 2008»
15 years 26 days ago
Average Spectra and Minimum Distances of Low-Density Parity-Check Codes over Abelian Groups
Ensembles of regular low-density parity-check codes over any finite Abelian group G are studied. The nonzero entries of the parity matrix are randomly chosen, independently and uni...
Giacomo Como, Fabio Fagnani