Resource Allocation in GMD and SVD-based MIMO System

Andreas Ahrens, Francisco Cano-Broncano, César Benavente-Peces

Abstract

Singular-value decomposition (SVD)-based multiple-input multiple output (MIMO) systems, where the whole MIMO channel is decomposed into a number of unequally weighted single-input single-output (SISO) channels, have attracted a lot of attention in the wireless community. The unequal weighting of the SISO channels has led to intensive research on bit- and power allocation even in MIMO channel situation with poor scattering conditions identified as the antennas correlation effect. In this situation, the unequal weighting of the SISO channels becomes even much stronger. In comparison to the SVD-assisted MIMO transmission, geometric mean decomposition (GMD)-based MIMO systems are able to compensate the drawback of weighted SISO channels when using SVD, where the decomposition result is nearly independent of the antennas correlation effect. The remaining interferences after the GMD-based signal processing can be easily removed by using dirty paper precoding as demonstrated in this work. Our results show that GMD-based MIMO transmission has the potential to significantly simplify the bit and power loading processes and outperforms the SVD-based MIMO transmission as long as the same QAM-constellation size is used on all equally-weighted SISO channels.

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Paper Citation


in Harvard Style

Ahrens A., Cano-Broncano F. and Benavente-Peces C. (2014). Resource Allocation in GMD and SVD-based MIMO System . In Proceedings of the 11th International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2014) ISBN 978-989-758-047-5, pages 27-35. DOI: 10.5220/0005020300270035


in Bibtex Style

@conference{winsys14,
author={Andreas Ahrens and Francisco Cano-Broncano and César Benavente-Peces},
title={Resource Allocation in GMD and SVD-based MIMO System},
booktitle={Proceedings of the 11th International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2014)},
year={2014},
pages={27-35},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005020300270035},
isbn={978-989-758-047-5},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 11th International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2014)
TI - Resource Allocation in GMD and SVD-based MIMO System
SN - 978-989-758-047-5
AU - Ahrens A.
AU - Cano-Broncano F.
AU - Benavente-Peces C.
PY - 2014
SP - 27
EP - 35
DO - 10.5220/0005020300270035