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Elektrik Elektronik Mühendisliği Bölümü Yayın Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12416/411

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Browsing Elektrik Elektronik Mühendisliği Bölümü Yayın Koleksiyonu by Subject "802.16J"

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    Citation - Scopus: 1
    A novel cognitive method for throughput improvement of mobile multi-hop ad hoc networks
    (Springer, 2015) Preveze, Barbaros; Preveze, Barbaros; 17573; Elektrik-Elektronik Mühendisliği
    We had previously defined a novel cognitive method for throughput improvement of IEEE 802.16j mobile multi-hop ad-hoc network which enables better management of the spectral access and buffer management of the nodes in the network. By this method we had minimized the packet loss ratio and improved the throughput of IEEE 802.16j network. In this study, a novel cognitive buffer management algorithm is proposed that arranges the packets stored in the buffers of the nodes in a probabilistic way and selects correct packet of the correct node to transmit first to provide fewer packet losses and also fewer average hop-counts for more throughputs. It is shown that the novel proposed buffer management algorithm provides about 19.45 % more throughput improvement (on average) with respect to the results evaluated by the buffer management algorithm used before (which was also shown to provide 12 % throughput improvement with respect to a First In First Out buffer management algorithm). All the results evaluated in this study are also confirmed by the results of analytical calculations, the results of the developed simulation program and the results evaluated in the literature.
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    Citation - Scopus: 3
    Effects of ant colony and fastest path routing algorithms on performance improvement of novel cognitive methods
    (2010) Preveze, B.; Preveze, Barbaros; Safak, A.; 17573; Elektrik-Elektronik Mühendisliği
    This paper demonstrates the usage of novel cognitive methods that improve the throughput of a WIMAX network by minimizing packet loss. The effects of the ant colony and fastest path routing algorithms on the throughput are investigated. A combination of Time Division Multiple Access (TDMA) and Orthogonal Frequency Division Multiple Access (OFDMA) spectrum sharing techniques is used. Data packet loss rate is minimized for real-time voice and video packet transmissions. A unicast mobile multimedia network with improved system throughput is provided with both routing methods, even for a small node count. © 2010 IEEE.