Author(s): Barbaros Preveze | Aysel Şafak
Journal: International Journal of Wireless & Mobile Networks
ISSN 0975-4679
Volume: 2;
Issue: 3;
Start page: 120;
Date: 2010;
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Keywords: Throughput | Cognitive | WIMAX | Multimedia | Routing
ABSTRACT
This paper demonstrates the use of some novel cognitive techniques we propose to improve thethroughput of a mobile WIMAX network and minimize the packet losses. We propose a novel methodcalled Orthogonal Frequency Division Most Congested Access First (OFDMCAF), to modify thespectrum sharing technique of (Time Division Multiple Access) TDMA and (Orthogonal FrequencyDivision Multiple Access) OFDMA and to manage the spectrum access. The heavy multimedia traffic ismanaged by OFDMCAF with novel spectrum sharing and buffer management methods we propose. Byuse of novel cognitive methods, real time voice and video packet transmissions have been provided withfull success and the packet loss rate of data packets has been minimized. The simulation results areconfirmed by comparing them with results of other publications and comparing with results of packet losscalculations we made. The results are usable in designing unicast mobile multimedia network withimproved system throughput.
Journal: International Journal of Wireless & Mobile Networks
ISSN 0975-4679
Volume: 2;
Issue: 3;
Start page: 120;
Date: 2010;
VIEW PDF
DOWNLOAD PDF Original pageKeywords: Throughput | Cognitive | WIMAX | Multimedia | Routing
ABSTRACT
This paper demonstrates the use of some novel cognitive techniques we propose to improve thethroughput of a mobile WIMAX network and minimize the packet losses. We propose a novel methodcalled Orthogonal Frequency Division Most Congested Access First (OFDMCAF), to modify thespectrum sharing technique of (Time Division Multiple Access) TDMA and (Orthogonal FrequencyDivision Multiple Access) OFDMA and to manage the spectrum access. The heavy multimedia traffic ismanaged by OFDMCAF with novel spectrum sharing and buffer management methods we propose. Byuse of novel cognitive methods, real time voice and video packet transmissions have been provided withfull success and the packet loss rate of data packets has been minimized. The simulation results areconfirmed by comparing them with results of other publications and comparing with results of packet losscalculations we made. The results are usable in designing unicast mobile multimedia network withimproved system throughput.
