Comparison of coded modulation schemes for the AWGN and the Rayleigh fading channel

Author

Wachmann, U. ; Huber, Johannes B. ; Schramm, Peter

Author_Institution

Lehrstuhl fur Nachrichtentech., Erlangen-Nurnberg Univ., Germany

fYear

1998

fDate

16-21 Aug 1998

Firstpage

5

Abstract

Coded modulation schemes based on convolutional codes as well as block codes, in particular turbo codes, are considered on AWGN and flat Rayleigh fading channels. It turns out that codes based on Gray mapping are robust to channel variations, whereas Ungerbock mapping is suitable only if the channel is a-priori known. The most power efficient scheme based on convolutional codes is multilevel coding with parallel decoding. For block codes, however, bit interleaved coded modulation gains by increased codeword length and outperforms the other schemes

Keywords

AWGN channels; Gray codes; Rayleigh channels; block codes; channel coding; convolutional codes; decoding; interleaved codes; modulation coding; turbo codes; AWGN; Gray mapping; Rayleigh fading channel; Ungerbock mapping; bit interleaved coded modulation; block codes; channel variations; coded modulation schemes; codeword length; convolutional codes; multilevel coding; parallel decoding; power efficient scheme; turbo codes; AWGN channels; Bit error rate; Block codes; Convolutional codes; Decoding; Fading; Interleaved codes; Modulation coding; Page description languages; Robustness;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Theory, 1998. Proceedings. 1998 IEEE International Symposium on

Conference_Location

Cambridge, MA

Print_ISBN

0-7803-5000-6

Type

conf

DOI

10.1109/ISIT.1998.708582

Filename

708582