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Power Saving in Multiuser Adaptive Modulation Transmission with Quantized Feedback

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Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST,volume 77)

Abstract

A transmitter power saving mechanism is presented in this paper where an Adaptive Modulation (AM) strategy is performed by the system. The power saving is accomplished by fixing a predefined Quality of Service (QoS) indicator in the system through the demanded application Symbol Error Rate (SER). The mutliuser system capability is also exploited to achieve larger power saving values, by scheduling the user with the best channel characteristics at each time instant. The feedback values from the receiver are not perfect and show some quantization error, to match with realistic systems. The obtained results are encouraging as they show a great decrease in the system power budget. The system saved power is presented through a closed form expression and compared its results to computer simulations where a very tight performance is obtained.

Keywords

  • Adaptive Modulation
  • Opportunistic Transmission
  • Quantized Feedback
  • Power Saving

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© 2012 ICST Institute for Computer Science, Social Informatics and Telecommunications Engineering

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Althunibat, S., Zorba, N., Loeb, HP., Verikoukis, C. (2012). Power Saving in Multiuser Adaptive Modulation Transmission with Quantized Feedback. In: Rodriguez, J., Tafazolli, R., Verikoukis, C. (eds) Mobile Multimedia Communications. MobiMedia 2010. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 77. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-35155-6_40

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  • DOI: https://doi.org/10.1007/978-3-642-35155-6_40

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-35154-9

  • Online ISBN: 978-3-642-35155-6

  • eBook Packages: Computer ScienceComputer Science (R0)