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Pairwise Optimization of Modulation Constellations for Non-Uniform Sources
 

Summary: Pairwise Optimization of Modulation Constellations
for Non-Uniform Sources
by
Brendan F.D. Moore
A thesis submitted to the
Department of Mathematics and Statistics
in conformity with the requirements for
the degree of Master of Applied Science
Queen's University
Kingston, Ontario, Canada
September, 2009
Copyright c Brendan Moore, 2009
Abstract
The design of two-dimensional signal constellations for the transmission of binary
non-uniform memoryless sources over additive white Gaussian noise channels is in-
vestigated. The main application of this problem is the implementation of improved
constellations where transmitted data is highly non-uniform. A simple algorithm,
which optimizes a constellation by re-arranging its points in a pairwise fashion (i.e.,
two points are modified at a time, with all other points remaining fixed), is presented.
In general, the optimized constellations depend on both the source statistics and the

  

Source: Alajaji, Fady - Department of Mathematics and Statistics, Queen's University (Kingston)
Linder, Tamás - Department of Mathematics and Statistics, Queen's University (Kingston)

 

Collections: Engineering