Design of Good Constellations for Single-Subcarrier Intensity-Modulated Optical Systems

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We address the problem of constellation design for single-subcarrier intensity-modulated direct-detected optical systems. We seek to design constellations that minimize the average electrical power, average optical power and peak optical power for a given minimum Euclidean distance between constellation points. The constellation design is formulated as a nonconvex optimization problem with a convex cost function, nonconvex quadratic constraints and second-order cone constraints. It is shown that this problem can be approximated by a second-order cone programming (SOCP) problem. We propose an iterative procedure in which the SOCP approximation is refined in each iteration. The new constellations are compared to the state-of-the-art constellations in terms of power efficiency. Our 32- and 64-point constellations outperform the corresponding QAM-based and face-centered cubic lattice constellations.
Original languageUnknown
Title of host publicationInternational Conference on Telecommunications and Multimedia (TEMU)
Publication statusPublished - 1 Jan 2014
EventInternational Conference on Telecommunications and Multimedia (TEMU) -
Duration: 1 Jan 2014 → …


ConferenceInternational Conference on Telecommunications and Multimedia (TEMU)
Period1/01/14 → …

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