address hybrid probabilistic-geometric constellation shaping (HCS) of amplitude phase shift keying (APSK) constellation based on the reversed model of optimal companding quantization for circularly symmetric sources with the goal to increase the constellation power efficiency in Gaussian-noise-limited channel...
Circularly-SymmctricGaussianrandomvectors RobertG.Gallager January1,2008 Abstract Anumberofbasicpropertiesaboutcircularly-symmetricGaussianrandomvectorsarestatedandprovedhere・These propertiesareeachprobablywellknowntomostresearcherswhoworkwithGaussiannoise,butIhavenotfoundthemstated ...
All of the phenomena observed here arise from intrinsic, non-symmetric coupling between motional degrees of freedom. This is expressed in the asymmetry of the stiffness matrix, Eq. (3). For circularly polarized light, this coupling is caused by spin. More generally, asymmetric coupling can be ...