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Ibrahim Altunbas
Researcher at Istanbul Technical University
Publications - 129
Citations - 973
Ibrahim Altunbas is an academic researcher from Istanbul Technical University. The author has contributed to research in topics: Fading & Relay. The author has an hindex of 14, co-authored 122 publications receiving 790 citations. Previous affiliations of Ibrahim Altunbas include Koç University & Alcatel-Lucent.
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Cooperative Diversity for Intervehicular Communication: Performance Analysis and Optimization
TL;DR: This paper investigates the performance of amplify-and-forward relaying for an intervehicular cooperative scheme assisted by either a roadside access point or another vehicle that acts as a relay and forms a power-allocation problem for the considered scheme to optimize the power allocated to the broadcasting and relaying phases.
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Space-Time Channel Modulation
Ertugrul Basar,Ibrahim Altunbas +1 more
TL;DR: In this paper, the authors introduced the concept of space-time channel modulation (STCM), which extends the classical space time block codes into a third dimension: channel states (transmission media) dimension.
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Design of serial concatenated MSK schemes based on density evolution
TL;DR: This work shows that it is possible to improve the performance significantly by using a mixture of recursive and nonrecursive realizations for the CPE, and designs new LDPC codes based on the concept of density evolution that outperform the best known codes for MSK and have lower decoding complexity.
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Low Complexity Adaptation for Reconfigurable Intelligent Surface-Based MIMO Systems
TL;DR: A cosine similarity theorem-based low-complexity algorithm for adapting the phase shifts of an RIS that assists a multiple-input multiple-output (MIMO) transmission system.
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Quadrature Channel Modulation
TL;DR: It is shown via numerical studies that the proposed QCM schemes can outperform the existing emerging schemes such as QSM, plain MBM, and spatial modulation-basedMBM, which also employ a single RF chain at their transmitters.