Parallel decoding for lattice reduction-aided MIMO Receiver

Authors

MADURAKAVI KARTHIKEYAN
DJAGADEESAN SARASWADY

DOI

10.3906/elk-1503-136

Abstract

In this paper, we propose a modified lattice reduction (LR) for parallel decoding (PD) in multiple input and multiple output (MIMO) systems. Compared with the conventional methods, without any performance loss, the symbols can be estimated in parallel using this LR-PD algorithm. This parallel decoding is achieved through the proposed postrotation matrix. Among the various LR algorithms, LLL has been considered in the analysis of this postrotation matrix. However, this can be applied to any other LR algorithms without any modifications. In simulations, we show that with a minimal number of extra arithmetic operations and without any significant loss in orthogonal defect and bit error rate performance, the parallel decoding becomes possible in a real as well as complex-valued MIMO system model.

Keywords

MIMO decoding, LR-PD, LLL, lattice reduction, parallel decoding

First Page

5173

Last Page

5182

Recommended Citation

KARTHIKEYAN, MADURAKAVI and SARASWADY, DJAGADEESAN (2016) "Parallel decoding for lattice reduction-aided MIMO Receiver," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 24: No. 6, Article 47. https://doi.org/10.3906/elk-1503-136
Available at: https://journals.tubitak.gov.tr/elektrik/vol24/iss6/47