e Technology, 8(6), 1127-1136 (1990). 36. Benedetto, S., Poggiolini, P. T., Multilevel polarization shift keying: Optimum receiver structure and performance evaluation, IEEE Transactions on Communications, 42(2/3/4), 1174-1186 (1994). 37. Betti, S., De Marchis, G., Iannone, E., Polarization modulated direct detection optical commu- nication systems, IEEE Journal of Lightwave Technology, 10(12), 1985-1997 (1992). 38. Watts, E. F., Descriptive Geometry, 2009 (Re-edition), ISBN: 9781443730006. 39. Sutton, D., Platonic and Archimedean Solids, Walker & Company, New York, s.l., 2002, ISBN-13: 978-0802713865. 40. Bull, J. D. et al., Ultrahigh-speed polarization modulator, Conference on Lasers and Electrooptics (CLEO/QUELS 2005), Baltimore, MD, IEEE, s.l., Vol. 2, pp. 939-941, 2005. Benedetto, S., Poggiolini, P., Theory of polarization shift keying modulation, IEEE Transaction on Communications, 40(4), 708-721 (1992). 42. Nazaraty, M., Simony, E., Stokes space optimal detection of multidifferential phase and polar- ization shift keying modulation, IEEE Journal of Lightwave Technology, 24(5), 1978-1988 (2006). 43. Gitlin, R. D., Hayes, J. F., Weinstein, S. B., Data Communications Principles, Plenum Press, New York, s.l., 1992, ISBN 0306437775. 44. Forney, G. D., Jr., Wei, L.-F., Multidimensional constellations. I. Introduction, figures of merit, and generalized cross constellations, IEEE Journal of Selected Areas in Communications, 7(6), 877-892 (1989). 45. Coxeter, H. S. M., Regular Polytopes, Dover Publications Inc., New York, s.l., 1973, ISBN 0486614808. 46. Forney, G. D., Multidimensional constellations. II. Voronoi constellations, IEEE Journal of Selected Areas in Communications, 7(6), 941-958 (1989). 47. Laroja, R., Farvardin, N., Tretter, S., On SQV shaping of multidimensional constellations-High rate large dimensional constellations, Technical research report, Systems Research Center, University of Maryland at Harvard, College park, MD, s.l. 1992, http://drum.lib.umd.edu/ bitstream/1903/5187/1/TR_92-5.pdf (accesse