MODULATION-MODE AND POWER ASSIGNMENT IN SVD-ASSISTED BROADBAND MIMO SYSTEMS

Andreas Ahrens, César Benavente-Peces

2009

Abstract

Existing bit loading and transmit power allocation techniques are often optimized for maintaining both a fixed transmit power and a fixed target bit-error rate while attempting to maximize the overall data-rate. However, delay-critical real-time interactive applications, such as voice or video transmission, may require a fixed data rate. For these fixed-rate applications it is desirable to design algorithms, which minimize the bit-error rate (BER) at a given fixed data rate. Since the capacity of multiple-input multiple-output (MIMO) systems increases linearly with the minimum number of antennas at both, the transmitter as well as the receiver side, MIMO schemes have attracted a lot of attention. However, non-frequency selective MIMO links have reached a state of maturity. By contrast, frequency selective MIMO links require substantial further research, leading in this contribution to a joint optimization of the number of activated MIMO layers and the number of bits per symbol along with the appropriate allocation of the transmit power under the constraint of a given fixed data throughput. Our results show that in order to achieve the best possible bit-error rate, not necessarily allMIMO layers have to be activated.

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Paper Citation


in Harvard Style

Ahrens A. and Benavente-Peces C. (2009). MODULATION-MODE AND POWER ASSIGNMENT IN SVD-ASSISTED BROADBAND MIMO SYSTEMS . In Proceedings of the International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2009) ISBN 978-989-674-008-5, pages 83-88. DOI: 10.5220/0002165700830088


in Bibtex Style

@conference{winsys09,
author={Andreas Ahrens and César Benavente-Peces},
title={MODULATION-MODE AND POWER ASSIGNMENT IN SVD-ASSISTED BROADBAND MIMO SYSTEMS},
booktitle={Proceedings of the International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2009)},
year={2009},
pages={83-88},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002165700830088},
isbn={978-989-674-008-5},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Wireless Information Networks and Systems - Volume 1: WINSYS, (ICETE 2009)
TI - MODULATION-MODE AND POWER ASSIGNMENT IN SVD-ASSISTED BROADBAND MIMO SYSTEMS
SN - 978-989-674-008-5
AU - Ahrens A.
AU - Benavente-Peces C.
PY - 2009
SP - 83
EP - 88
DO - 10.5220/0002165700830088