Title :
Algorithm for joint decoding of turbo codes and M-ary orthogonal modulation
Author :
Liang, Paul C P ; Stark, Wayne E.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Michigan Univ., Ann Arbor, MI, USA
Abstract :
In this paper, we consider the concatenation of turbo codes and M-ary orthogonal modulation. A modified decoding algorithm that utilizes the correlated nature of an orthogonal symbol drawn from a Hadamard matrix and the soft-input/soft-output module of turbo codes is introduced. This improved decoding algorithm can significantly lower the error shoulder and reduce the SNR required for a given error probability
Keywords :
AWGN channels; Hadamard matrices; Rayleigh channels; concatenated codes; error statistics; iterative decoding; modulation coding; turbo codes; AWGN channels; Hadamard matrix; M-ary orthogonal modulation; Rayleigh fading channels; SNR; concatenation; error probability; modified decoding algorithm; soft-input/soft-output module; turbo codes; AWGN; Bit error rate; Error correction; Error correction codes; Feedback; Gaussian noise; Iterative algorithms; Iterative decoding; Modulation coding; Turbo codes;
Conference_Titel :
Information Theory, 2000. Proceedings. IEEE International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
0-7803-5857-0
DOI :
10.1109/ISIT.2000.866486
