Title :
Design and implementation of three-dimensional block turbo codes
Author :
Yin, Bo ; Soleymani, M.R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
Abstract :
This paper investigates multidimensional block turbo codes (BTCs) with trellis-based decoding. Reed-Muller (RM) codes are used as the component codes. The suboptimal decoding algorithm: MAX-log-MAP with a correction term is used for iterative decoding of multidimensional BTCs. This decoding method provides good tradeoff between performance and complexity. Three-dimensional BTCs are used in AWGN channel with BPSK and QPSK modulation. Multidimensional BTCs allow a large number of block sizes and coding rates to meet many practical applications. The fixed point implementation of these codes is also presented. The simulation results show that the coding gain loss with 4-bit quantization for received sequence is negligible.
Keywords :
AWGN channels; Reed-Muller codes; block codes; channel coding; iterative decoding; maximum likelihood decoding; quadrature phase shift keying; trellis codes; turbo codes; 4-bit quantization; AWGN channel; BPSK modulation; MAX-log-MAP; QPSK modulation; Reed-Muller code; additive white Gaussian noise; binary phase shift keying; coding gain loss; coding rate; component code; iterative decoding; maximum a posteriori; multidimensional block turbo code; quaternary phase shift keying; suboptimal decoding algorithm; trellis-based decoding; AWGN channels; Asynchronous transfer mode; Bandwidth; Binary phase shift keying; Block codes; Iterative algorithms; Iterative decoding; Quadrature phase shift keying; Quantization; 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.2003.1226219
