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Impact of Signaling Constraints on the MAC Level Performance of OFDMA Systems

Authors
Einhaus, Michael and Schinnenburg, Marc
Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University Kontakt: Michael Einhaus

In Proceedings of International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM) 2007, p. 4, Shanghai, China, 2007.
Publication Date: Sep, 2007
On page(s):4
ISBN: 1-4244-1312-5
Abstract
Frequency adaptive scheduling in OFDMA systems requires accurate channel state information at the transmitter. In this paper we investigate the performance degradation in the downlink of a WiMAX based OFDMA system under the assumption of signaling constraints in the uplink. The active mobile terminals are not allowed to transmit the channel state information of all available subchannels to the associated base station but only a subset which is defined by a maximum number of subchannels. The impact of this constraint on the system behavior is discussed with the help of simulative performance evaluations. These are mainly focused on the interaction between physical layer and medium access control and therefore provide specific insight into the characteristics of broadband OFDMA systems.
Author Keywords
OFDMA, medium access control, WiMAX, signaling overhead, frequency adaptive scheduling
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Bibtex
@INPROCEEDINGS{EiSch_WiCOM07,
  AUTHOR          = {Einhaus, M. and Schinnenburg, M.},
  TITLE           = {Impact of Signaling Constraints on the MAC Level Performance of OFDMA
                    Systems},
  YEAR            = {2007},
  MONTH           = {Sep},
  PAGES           = {4},
  ADDRESS         = {Shanghai, China},
  BOOKTITLE       = {Proceedings of International Conference on Wireless Communications,
                    Networking and Mobile Computing (WiCOM) 2007},
  AFFILIATION     = {Department of Communication Networks (ComNets), Faculty 6, RWTH Aachen University},
  ISBN            = {1-4244-1312-5},
  KEYWORDS        = {OFDMA, medium access control, WiMAX, signaling overhead, frequency
                    adaptive scheduling},
  URL             = {http://www.comnets.rwth-aachen.de} 
}
Signature in CN-Library = {Qi 035}
Letzte Änderung: 17.09.2008 11.46