Low Complexity Lattice Reduction for MIMO Detection using Time Correlation of the Fading Channels 


Vol. 35,  No. 6, pp. 523-529, Jun.  2010


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  Abstract

We propose a very low complexity lattice reduction (LR) algorithm for MIMO detection in time varying channels. The proposed scheme reduces the complexity by performing LR in a block-wise manner. The proposed scheme takes advantage of the temporal correlation of the channel matrices in a block and its impact on the unimodular matrices during LR process. From this, the proposed scheme can skip a number of redundant LR processes for consecutive channel matrices and performs a single LR in a block. The simulation results investigated in this letter reveal that the proposed detection scheme requires only 43.4% multiplications and 17.3% divisions of LLL-LR and only 50.2% multiplications and 68.2% divisions of the conventional adaptive LR with almost no performance degradation.

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  Cite this article

[IEEE Style]

H. Kim, K. Choi, S. Kim, "Low Complexity Lattice Reduction for MIMO Detection using Time Correlation of the Fading Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 6, pp. 523-529, 2010. DOI: .

[ACM Style]

Hannah Kim, Kwonhue Choi, and Sooyoung Kim. 2010. Low Complexity Lattice Reduction for MIMO Detection using Time Correlation of the Fading Channels. The Journal of Korean Institute of Communications and Information Sciences, 35, 6, (2010), 523-529. DOI: .

[KICS Style]

Hannah Kim, Kwonhue Choi, Sooyoung Kim, "Low Complexity Lattice Reduction for MIMO Detection using Time Correlation of the Fading Channels," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 6, pp. 523-529, 6. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880