Title :
On block-coded modulation using unequal error protection codes over Rayleigh-fading channels
Author :
Morelos-Zaragoza, Robert H. ; Kasami, Tadao ; Lin, Shu ; Imai, Hideki
Author_Institution :
Inst. of Ind. Sci., Tokyo Univ., Japan
fDate :
1/1/1998 12:00:00 AM
Abstract :
This paper considers block-coded 8-phase-shift-keying (PSK) modulations for the unequal error protection (UEP) of information transmitted over Rayleigh-fading channels. Both conventional linear block codes and linear UEP (LUEP) codes are combined with a naturally labeled 8-PSK signal set, using the multilevel construction of Imai and Hirakawa (1977). Computer simulation results are presented showing that, over Rayleigh-fading channels, it is possible to improve the coding gain for the most significant bits with the use of binary LUEP codes as constituent codes, in comparison with using conventional binary linear codes alone
Keywords :
Rayleigh channels; binary sequences; block codes; error correction codes; fading; linear codes; modulation coding; phase shift keying; 8-PSK signal set; Rayleigh-fading channels; binary LUEP codes; binary linear codes; block-coded 8-phase-shift-keying; block-coded modulation; coding gain; computer simulation results; linear UEP codes; linear block codes; modulation; most significant bits; multilevel construction; unequal error protection codes; Bit error rate; Block codes; Computer errors; Computer simulation; Error correction codes; Linear code; Modulation coding; Phase shift keying; Rayleigh channels; Satellite broadcasting;
Journal_Title :
Communications, IEEE Transactions on
