Title :
Iterative Viterbi algorithm for concatenated multidimensional TCM
Author :
Wang, Qi ; Wei, Lei
Author_Institution :
Inst. for Telecommun. Res., Univ. of South Australia, Adelaide, SA, Australia
fDate :
1/1/2002 12:00:00 AM
Abstract :
A novel compound code is designed for the multidimensional (M-D) Wei (1987) trellis code combined with a simple parity-check code. Using the iterative Viterbi decoding algorithm, we can achieve a remarkable performance improvement with low computational complexity. Simulation results show that at a bit error rate (BER) of 3.7 × 10-6 about 2.2-dB additional net gain has been obtained over the conventional scheme of the 4-D 16-state Wei code at a spectral efficiency of 6.7871 bit/T
Keywords :
Viterbi decoding; computational complexity; concatenated codes; error statistics; iterative decoding; trellis coded modulation; trellis codes; BER; bit error rate; compound code; concatenated multidimensional TCM; inner code; iterative Viterbi decoding algorithm; low computational complexity; multidimensional Wei trellis code; outer code; parity-check code; simulation results; spectral efficiency; Bit error rate; Computational complexity; Computational modeling; Concatenated codes; Convolutional codes; Iterative algorithms; Iterative decoding; Multidimensional systems; Parity check codes; Viterbi algorithm;
Journal_Title :
Communications, IEEE Transactions on
