Title :
Multilevel coded 16-QAM modulation with multistage decoding and unequal error protection
Author :
Isaka, M. ; Morelos-Zaragoza, R.H. ; Fossorier, Marc P C ; Lin, Sliu ; Imai, Hideki
Author_Institution :
Inst. of Ind. Sci., Tokyo Univ., Japan
Abstract :
A new construction for multilevel coded modulation with multistage decoding and unequal error protection is proposed and analyzed for both symmetric and asymmetric 16-QAM constellations. It is shown that the conventional upper bound originally derived for PSK signaling is loose when applied to QAM. A new tight approximated upper bound is proposed for 16-QAM and the partitioning considered. The proposed multilevel codes provide a larger proportion of most important bits (MIB) than in previous constructions
Keywords :
approximation theory; decoding; error correction codes; error statistics; modulation coding; quadrature amplitude modulation; BER bounds; PSK signaling; asymmetric 16-QAM constellation; error performance analysis; most important bits; multilevel coded 16-QAM modulation; multilevel codes; multistage decoding; symmetric 16-QAM constellation; tight approximated upper bound; unequal error protection; Construction industry; Decoding; Error correction codes; Error probability; Large scale integration; Logic; Modulation coding; Phase shift keying; Quadrature amplitude modulation; Upper bound;
Conference_Titel :
Global Telecommunications Conference, 1998. GLOBECOM 1998. The Bridge to Global Integration. IEEE
Conference_Location :
Sydney,NSW
Print_ISBN :
0-7803-4984-9
DOI :
10.1109/GLOCOM.1998.775870
