Title :
Block multidimensional MPSK modulation codes with unequal error protection
Author :
De Jesus, Cristiana S C M ; Portugheis, Jaime
Author_Institution :
UNICAMP, Campinas, Brazil
fDate :
29 Jun-4 Jul 1997
Abstract :
The construction of block multidimensional M-PSK modulation codes with unequal error protection (UEP) is considered. An UEP profile for the Rayleigh fading channel is obtained by partitioning four-dimensional constellations that are Cartesian products of non-uniform 8-PSK modulations or are subsets of a product of uniform modulations. New codes are constructed by using the multilevel coding technique with very simple binary component codes. These codes are matched to the VSELP codec described in the IS-54 mobile system
Keywords :
Rayleigh channels; block codes; cellular radio; error correction codes; fading; modulation coding; phase shift keying; speech codecs; Cartesian products; IS-54 mobile system; Rayleigh fading channel; VSELP codec; binary component codes; block multidimensional M-PSK modulation codes; four-dimensional constellations partitioning; multilevel coding; nonuniform 8-PSK modulation; unequal error protection; uniform modulation; Codecs; Constellation diagram; Decoding; Error correction codes; Error probability; Fading; Modular construction; Modulation coding; Multidimensional systems; Protection;
Conference_Titel :
Information Theory. 1997. Proceedings., 1997 IEEE International Symposium on
Conference_Location :
Ulm
Print_ISBN :
0-7803-3956-8
DOI :
10.1109/ISIT.1997.613464
