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

Andreas Ahrens, César Benavente-Peces

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.

References

  1. Ahrens, A. and Lange, C. (2008). Modulation-Mode and Power Assignment in SVD-equalized MIMO Systems. Facta Universitatis (Series Electronics and Energetics), 21(2):167-181.
  2. Ahrens, A. and Lange, C. (2009). Modulation-Mode and Power Assignment in SVD-assisted MIMO Systems with limited Feedback. In First Asian Conference on e-Business and Telecommunications (CeBT), pages 1- 18, Changhua City (Taiwan).
  3. Gesbert, D. (2004). Multipath: Curse or Blessing? A System Performance Analysis of MIMO Wireless Systems. In Proceedings of International Zurich Seminar on Communications (IZS), pages 14-17, Zurich (Switzerland).
  4. Hanzo, L. and Keller, T. (2006). OFDM and MC-CDMA. Wiley, New York.
  5. Haykin, S. S. (2002). Adaptive Filter Theory. Prentice Hall, New Jersey.
  6. Jang, J. and Lee, K. B.(2003). Transmit Power Adaptation for Multiuser OFDM Systems. IEEE Journal on Selected Areas in Communications, 21(2):171-178.
  7. Krongold, B. S., Ramchandran, K., and Jones, D. L. (2000). Computationally Efficient Optimal Power Allocation Algorithms for Multicarrier Communications Systems. IEEE Transactions on Communications, 48(1):23-27.
  8. Kühn, V. (2006). Wireless Communications over MIMO Channels - Applications to CDMA and Multiple Antenna Systems. Wiley, Chichester.
  9. Park, C. S. and Lee, K. B. (2004). Transmit Power Allocation for BER Performance Improvement in Multicarrier Systems. IEEE Transactions on Communications, 52(10):1658-1663.
  10. Proakis, J. G. (2000). Digital Communications. McGrawHill, Boston.
  11. Raleigh, G. G. and Cioffi, J. M. (1998). Spatio-Temporal Coding for Wirless Communication. IEEE Transactions on Communications, 46(3):357-366.
  12. Raleigh, Gregory G. and Jones, V. K. (1999). Multivariate Modulation and Coding for Wireless Communication. IEEE Journal on Selected Areas in Communications, 17(5):851-866.
  13. Wong, C. Y., Cheng, R. S., Letaief, K. B., and Murch, R. D. (1999). Multiuser OFDM with Adaptive Subcarrier, Bit, and Power Allocation. IEEE Journal on Selected Areas in Communications, 17(10):1747-1758.
  14. Zheng, L. and Tse, D. N. T. (2003). Diversity and Multiplexing: A Fundamental Tradeoff in MultipleAntenna Channels. IEEE Transactions on Information Theory, 49(5):1073-1096.
  15. Zhou, Z. and Vucetic, B. and Dohler, M. and Li, Y.(2005). MIMO Systems with Adaptive Modulation. IEEE Transactions on Vehicular Technology, 54(5):1073- 1096.
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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