TY - GEN
T1 - Complex low density lattice codes for the 2×2 MIMO fading channel
AU - Yona, Yair
AU - Feder, Meir
PY - 2013
Y1 - 2013
N2 - A transmission scheme for a 2 × 2 multiple-input multiple-output (MIMO) channel utilizing a complex low density lattice codes (CLDLC's) is presented in this paper. The code is of small size and small degree, and the scheme reduces the number of dimensions per channel use from 2 to 4/3. For decoding, we derive an iterative max-product algorithm for the MIMO channel combined with the code. When the a-priori probabilities are Gaussians, there is an interesting connection between the passed messages and minimum mean square error estimation. Using the CLDLC structure and the reduced dimensionality of the transmission scheme, we present a very efficient parametric decoding algorithm for the 2×2 MIMO channel. At a rate of 8 bits per channel use the proposed simple and computationally efficient transmission scheme outperforms the Alamouti scheme by 3.5 dB, and has a gap of 1.7 dB from the golden code.
AB - A transmission scheme for a 2 × 2 multiple-input multiple-output (MIMO) channel utilizing a complex low density lattice codes (CLDLC's) is presented in this paper. The code is of small size and small degree, and the scheme reduces the number of dimensions per channel use from 2 to 4/3. For decoding, we derive an iterative max-product algorithm for the MIMO channel combined with the code. When the a-priori probabilities are Gaussians, there is an interesting connection between the passed messages and minimum mean square error estimation. Using the CLDLC structure and the reduced dimensionality of the transmission scheme, we present a very efficient parametric decoding algorithm for the 2×2 MIMO channel. At a rate of 8 bits per channel use the proposed simple and computationally efficient transmission scheme outperforms the Alamouti scheme by 3.5 dB, and has a gap of 1.7 dB from the golden code.
UR - http://www.scopus.com/inward/record.url?scp=84897716973&partnerID=8YFLogxK
U2 - 10.1109/Allerton.2013.6736538
DO - 10.1109/Allerton.2013.6736538
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AN - SCOPUS:84897716973
SN - 9781479934096
T3 - 2013 51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013
SP - 299
EP - 306
BT - 2013 51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013
PB - IEEE Computer Society
T2 - 51st Annual Allerton Conference on Communication, Control, and Computing, Allerton 2013
Y2 - 2 October 2013 through 4 October 2013
ER -