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Please use this identifier to cite or link to this item:
http://hdl.handle.net/1974/5267
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| Title: | Pairwise Optimization of Modulation Constellations for Non-Uniform Sources |
| Authors: | MOORE, BRENDAN |
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| Keywords: | modulation constellations
optimization
non-uniform sources
modulation |
| Issue Date: | 2009 |
| Series/Report no.: | Canadian theses |
| Abstract: | The design of two-dimensional signal constellations for the transmission of binary non-uniform memoryless sources over additive white Gaussian noise channels is investigated. 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 signal-to-noise ratio (SNR) in the channel. We show that constellations designed with source statistics considered can yield symbol error rate performance that is substantially better than rectangular quadrature amplitude modulation signal sets used with either Gray mapping or more recently developed maps. |
| Description: | Thesis (Master, Mathematics & Statistics) -- Queen's University, 2009-10-06 22:22:40.096 |
| URI: | http://hdl.handle.net/1974/5267 |
| Appears in Collections: | Queen's Theses & Dissertations
Mathematics & Statistics Graduate Theses
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