Research Article
Power Saving in Multiuser Adaptive Modulation Transmission with Quantized Feedback
@INPROCEEDINGS{10.1007/978-3-642-35155-6_40, author={Saud Althunibat and Nizar Zorba and Hans-Peter Loeb and Christos Verikoukis}, title={Power Saving in Multiuser Adaptive Modulation Transmission with Quantized Feedback}, proceedings={First International ICST Workshop on Cognitive Radio and Cooperative Strategies for Power Saving}, proceedings_a={C2POWER}, year={2012}, month={12}, keywords={Adaptive Modulation Opportunistic Transmission Quantized Feedback Power Saving}, doi={10.1007/978-3-642-35155-6_40} }- Saud Althunibat
Nizar Zorba
Hans-Peter Loeb
Christos Verikoukis
Year: 2012
Power Saving in Multiuser Adaptive Modulation Transmission with Quantized Feedback
C2POWER
Springer
DOI: 10.1007/978-3-642-35155-6_40
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.