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Medientyp: E-Artikel Titel: A link adaptation scheme for the downlink of mobile hotspot Beteiligte: Hasan, Md. M.; Mark, Jon W.; Shen, X. Erschienen: Wiley, 2012 Erschienen in: Wireless Communications and Mobile Computing, 12 (2012) 16, Seite 1458-1470 Sprache: Englisch DOI: 10.1002/wcm.1080 ISSN: 1530-8669; 1530-8677 Schlagwörter: Electrical and Electronic Engineering ; Computer Networks and Communications ; Information Systems Entstehung: Anmerkungen: Beschreibung: <jats:title>ABSTRACT</jats:title><jats:p>A link adaptation (LA) scheme for the downlink of mobile hotspot, which is supported by an IEEE 802.16e or mobile WiMAX network, is proposed. The mobile WiMAX uses orthogonal frequency division multiple access (OFDMA) in its physical layer. The main function of the LA scheme is to select an appropriate burst profile, which includes a multiple input multiple output (MIMO) transmission mode, modulation technique, and coding scheme. We formulate a discrete optimization problem for the LA scheme by maximizing the throughput. An algorithm to implement the LA scheme is also proposed. Numerical results show that the proposed LA scheme exhibits good performance. Copyright © 2011 John Wiley & Sons, Ltd.</jats:p> Zugangsstatus: Freier Zugang