CORR
2010
Springer
13 years 1 months ago
2010
Springer
Perfect Space-Time Codes are optimal codes in their original construction for Multiple Input Multiple Output (MIMO) systems. Based on cyclic division algebras, they are full-rate,...
DAM
1999
13 years 4 months ago
1999
The autocorrelation function of a sequence is a measure for how much the given sequence di ers from its translates. Periodic binary sequences with good correlation properties have...
MOC
2000
13 years 4 months ago
2000
Let (n) denote the sum of positive divisors of the natural number n. Such a number is said to be perfect if (n) = 2n. It is well known that a number is even and perfect if and only...
EJC
2006
13 years 4 months ago
2006
A perfect matching in a k-uniform hypergraph on n vertices, n divisible by k, is a set of n/k disjoint edges. In this paper we give a sufficient condition for the existence of a p...
APAL
2008
13 years 4 months ago
2008
There is a perfect thin 0 1 class whose upward closure in the Turing degrees has full measure (and indeed contains every 2-random degree.) Thus, in the Muchnik lattice of 0 1 class...
EUSFLAT
2007
13 years 6 months ago
2007
In this paper we summarize results on perfect MV-algebras and we show that the class of first order Lukasiewicz formulas valid in all interpretations over perfect MV-chains is ax...
CISS
2007
IEEE
13 years 11 months ago
2007
IEEE
Abstract— It is well-known that perfect channel state information (CSI) at the transmitter and the receiver (CSIT/CSIR) can be used to decompose a multi-antenna channel into a ba...