A Vector-Perturbation Based Lattice-Reduction using Look-Up Table 


Vol. 36,  No. 6, pp. 551-557, Jun.  2011


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  Abstract

We investigate lattice-reduction-aided precoding techniques using Look-Up table (LUT) for multi-user multiple-input multiple-output(MIMO) systems. Lattice-reduction-aided vector perturbation (VP) gives large sum capacity with low encoding complexity. Nevertheless lattice-reduction process based on the LLL-Algorithm still requires high computational complexity since it involves several iterations of size reduction and column vector exchange. In this paper, we apply the LUT-aided lattice reduction on VP and propose a scheme to generate the LUT efficiently. Simulation results show that a proposed scheme has similar orthogonality defect and Bit-Error-Rate(BER) even with lower memory size.

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  Cite this article

[IEEE Style]

J. Han and D. Park, "A Vector-Perturbation Based Lattice-Reduction using Look-Up Table," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 6, pp. 551-557, 2011. DOI: .

[ACM Style]

Jaewon Han and Daeyoung Park. 2011. A Vector-Perturbation Based Lattice-Reduction using Look-Up Table. The Journal of Korean Institute of Communications and Information Sciences, 36, 6, (2011), 551-557. DOI: .

[KICS Style]

Jaewon Han and Daeyoung Park, "A Vector-Perturbation Based Lattice-Reduction using Look-Up Table," The Journal of Korean Institute of Communications and Information Sciences, vol. 36, no. 6, pp. 551-557, 6. 2011.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880