Zhang Shuling1, Zhang Jianglin2, Shen Tian1. Application research on BICM-based algorithm for SW data links[J]. 2013,(2):32-34. DOI: 10.13756/j.gtxyj.2013.02.016.
This paper introduces a pragmatic Bit-Interleaved Coded Modulation(BICM)algorithm on the basis of(2
1
7) convolutional code.First
it numerically simulates this algorithm
proving that the hard-decision feedback iterative decoding of BICM(BICM-ID) algorithm is superior to the Trellis Coded Modulation(TCM)in Rayleigh channels.Then
it applies BICM-ID in SW data links and analyzes such factors as interleaving length
symbol mapping and number of iterations on BICM-ID performances.Finally
it implements this algorithm by using DSP and gives the decoding time for different code rates and data amount
the results of which indicate that the decoding time satisfy the real time requirements of the data links.