A modified version of the sphere detection algorithm has been recently proposed to compute the bit likelihood values in MIMO systems. The proposed approach has an affordable computational cost, even for a large number of antennas, and is able to produce values very close to the actual likelihoods. This complexity reduction makes it possible to succesfully utilize Bit-Interleaved Coded Modulation Schemes based on Iterative Decoding (BICM-ID). In this paper, we propose to use a concatenation of two systematic Low-Density Generator Matrix (LDGM) codes as the channel code of the BICM-ID system. We show the ability of this affordable-complexity scheme to operate at SNRs near the Shannon capacity limit of the MIMO channel. ©2004 IEEE.
CITATION STYLE
Vázquez-Araújo, F. J., González-López, M., Castedo, L., & García-Frías, J. (2004). BICM for MIMO channels using LDGM codes and sphere detection. In IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC (pp. 313–317). https://doi.org/10.1109/spawc.2004.1439255
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