Yazar "Karabulut M.A." seçeneğine göre listele

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    Differential modulation based network coded cooperative communications [Farksal Modülasyon Kullanan A? Kodlamali Işbirlikli Iletişim]
    (Institute of Electrical and Electronics Engineers Inc., 2015) Karabulut M.A.; Ilhan H.; Özdemir O.
    Multiple access relay channel (MARC) where multiple users communicate with a common destination via a relay, is an innovative approach and one of the most important network coding applications in wireless cooperative communications in recent years. In this paper, noncoherent differential binary phase shift keying (DPSK) technique which eliminates the need for channel estimation cost is applied to the MARC system model that uses maximum likelihood detection approach at the common destination. Noncoherent DPSK modulation of the MARC system model provides full diversity gain that has been observed at the resulting Monte-Carlo simulation. © 2015 IEEE.
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    Network coded noncoherent cooperative communications [A? kodlamali evre uyumsuz işbirlikli iletişim]
    (IEEE Computer Society, 2014) Karabulut M.A.; Ilhan H.; Ozdemir O.
    In recent years, network coding has received significant attention as an innovative approach that improves the spectral efficiency of wireless communication systems. The Multiple Access Relay Channel (MARC) where multiple users communicate with a common destination via a relay, is one of the important network coding applications in wireless cooperative communications. In this paper, error performance of MARC system non-coherent BFSK technique is studied. This technique, which employs training sequences, is a prominent approach for decreasing the system complexity and cost by eliminating the need for channel estimation. The numerical results for Rayleigh fading channels have shown that proposed approach provides full diversity gain. © 2014 IEEE.
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    Relaying selection based multiple access relay channel [Röle Seçimli Çoklu Erişim Röle Kanali]
    (Institute of Electrical and Electronics Engineers Inc., 2016) Karabulut M.A.; Özdemir O.; Ilhan H.
    Relay selection in case of fast cascade Rayleigh fading channels has been examined in multiple access relay channel structure which is one of the high spectral efficiency network coding applications. Error performance analysis of MARC system has been made for noncoherent binary frequency shift keying (BFSK) and it has been shown that the proposed approach provides full diversity gain. © 2016 IEEE.