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• W2112627185 abstract "We consider the problem of designing multipulse pulse-position modulation (MPPM) constellations whose sizes are powers of two. This problem amounts to selecting a subset from the collection of all ( <sub xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>w</sub> <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>n</sup> ) possible signal points of MPPM with w pulses in n time slots. In a previous work, we have tackled this selection using combinatorial heuristics. In this letter, we further explore two new continuous optimization approaches. The first one is a modified Blahut-Arimoto algorithm. The second one is inspired from compressed sensing. Using the constellation-constrained channel capacity as the figure of merit, numerical results from a relevant free-space optical communication example suggest that simple combinatorial heuristics yield practically the best designs." @default.
• W2112627185 created "2016-06-24" @default.
• W2112627185 creator A5046932726 @default.
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• W2112627185 date "2012-03-01" @default.
• W2112627185 modified "2023-10-16" @default.
• W2112627185 title "MPPM Constellation Selection for Free-Space Optical Communications" @default.
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• W2112627185 doi "https://doi.org/10.1109/tcomm.2012.12.100185" @default.
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