Title :
Design of Irregular Weighted Nonbinary Repeat-Accumulate Codes over GF(q) with q-ary Orthogonal Modulation Using a Gaussian Approximation
Author :
Kim, Yongsang ; Cheun, Kyungwhoon ; Lim, Hyuntack
Author_Institution :
Div. of Electr. & Comput. Eng., POSTECH, Pohang, South Korea
fDate :
11/1/2011 12:00:00 AM
Abstract :
Using a Gaussian approximation to the distribution of the message vectors under density evolution, we design irregular weighted nonbinary repeat-accumulate codes over GF(q) with q-ary orthogonal modulation. The resulting codes achieve a frame error rate of 10-1 within 0.56 to 0.91 dB of channel capacity under the AWGN channel.
Keywords :
AWGN channels; Gaussian processes; channel capacity; codes; AWGN channel; Gaussian approximation; channel capacity; density evolution; irregular weighted nonbinary repeat-accumulate codes; message vectors distribution; q-ary orthogonal modulation; AWGN channels; Approximation methods; Channel capacity; Decoding; Discrete Fourier transforms; Modulation; Parity check codes; Channel capacity; density evolution; orthogonal modulation; repeat-accumulate codes;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2011.063011.100012
