Title :
Bandwidth-efficient transmission using nonbinary CRSC turbo codes
Author :
Gao, Yingzi ; Soleymani, M.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
Since power and bandwidth are limited resources in modern digital communications systems, the subject of this paper is the design of nonbinary circular recursive systematic convolutional (CRSC) turbo codes combined with high level modulation, such as 8PSK modulation. It includes how to choose and/or design the components in a turbo encoder, as well as the design of the interleaver and the puncturer, to get the best possible performance with simplified Max-Log-MAP algorithm and higher transmission rate. Several combination schemes of coding and modulation, and their complexity are discussed. A comprehensive study over AWGN channel is carried out to show the performance of the proposed coding schemes and their potential as an alternative for more effective and efficient transmission of data via satellites without increasing the required bandwidth.
Keywords :
AWGN channels; convolutional codes; digital video broadcasting; direct broadcasting by satellite; modulation coding; phase shift keying; turbo codes; 8PSK modulation; AWGN channel; DVB-RCS standard; Max-Log-MAP algorithm; additive white Gaussian noise; bandwidth-efficient transmission; circular recursive systematic convolutional turbo code; coding scheme; digital communication system; high level modulation; interleaver design; nonbinary turbo code; phase shift keying; satellite data transmission; Algorithm design and analysis; Bandwidth; Code standards; Convolutional codes; Digital modulation; Digital video broadcasting; Iterative algorithms; Iterative decoding; Modulation coding; Turbo codes;
Conference_Titel :
Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on
Print_ISBN :
0-7803-7781-8
DOI :
10.1109/CCECE.2003.1226217
