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Publication Restricted Advanced spatial modulation systems for future MIMO systems(Koç University, 2022) Kurt, Mehmet Akif; Başar, Ertuğrul; 0000-0001-5566-2392; Koç University Graduate School of Sciences and Engineering; Electrical and Electronics Engineering; 149116
Publication Metadata only Circulating iPad: Koç University Suna Kıraç Library(Üniversite ve Araştırma Kütüphanecileri Derneği (ÜNAK), 2013) N/A; N/A; Zencir, Mithat Baver; Yeşiltaş, Kamil; Other; Other; Suna Kıraç Library; Suna Kıraç Library; N/A; N/AToday's technology has reached a milestone, that forces library services to go beyond just book lending. With this mind, Suna Kiraç Library has added iPad to its lending list in 2011, which already included technological tools such flash disks, laptops and calculators. While lending this relatively new technological tool, various aspects of loan should be considered and correct policies & procedures need to be established along with the technical infrastructure. This article provides information on defining policies and creating technical infrastructure that will be useful for libraries that plan to offer iPad lending services. In addition, results of the iPad using survey will be shared in this article. Based on the findings, there will be recommendations provided for libraries that setting up an iPad lending Program in the near future.Publication Restricted Haptistylus: A novel stylus capable of displaying flow and rotation effects(Koç University, 2014) Arasan, Atakan; Sezgin, Tevfik Metin; 0000-0002-1524-1646; Koç University Graduate School of Sciences and Engineering; Computer Science and Engineering; 18632Publication Metadata only Internet of energy harvesting cognitive radios(Springer Nature, 2020) Department of Electrical and Electronics Engineering; Department of Electrical and Electronics Engineering; N/A; Akan, Özgür Barış; Çetinkaya, Oktay; Özger, Mustafa; Faculty Member; Researcher; PhD Student; Department of Electrical and Electronics Engineering; College of Engineering; College of Engineering; Graduate School of Sciences and Engineering; 6647; N/A; N/AThe Internet of Things (IoT) offers enhanced connectivity so that any system, being, or process can be reached from anywhere at any time by perpetual surveillance, which results in very large and complex data sets, i.e., Big Data. Despite numerous advantages, IoT technology comes with some unavoidable drawbacks. Considering the number of devices to be added to the current electromagnetic spectrum, it is a fact that wireless communications will severely suffer and eventually become inoperable. Furthermore, as wireless devices are equipped with limited capacity batteries, frequent replenishments and/or maintenance will be needed. However, this is neither practical nor achievable due to the excessive number of devices envisioned by the IoT paradigm. Here, the unification of Energy Harvesting (EH) and Cognitive Radio (CR) stands highly promising to alleviate the current drawbacks, enabling more efficient data generation, acquisition, and analysis. This chapter outlines a new vision, namely Internet of Energy Harvesting Cognitive Radios (IoEH-CRs), to take the IoT-enabled Big Data paradigm a step further. It discusses the basics of the EH-assisted spectrum-aware communications and their implications for the IoT, as well as the challenges posed by the unification of these techniques. An operational framework together with node and network architectures is also presented.Publication Restricted Physical layer design of terahertz Band 5G wireless communications(Koç University, 2017) Khalid, Nabil; Akan, Özgür Barış; 0000-0003-2523-3858; Koç University Graduate School of Sciences and Engineering; Electrical and Electronics Engineering; 6647Publication Restricted Practical implementation and real-world validation of reconfigurable intelligent surfaces(Koç University, 2023) Kayraklık, Sefa; Başar, Ertuğrul; 0000-0001-5566-2392; Koç University Graduate School of Sciences and Engineering; Electrical and Electronics Engineering; 149116Publication Restricted Reconfigurable intelligent surface-centric communication networks : a compherensive exploration of channel modeling and coverage entension(Koç University, 2024) Yıldırım, İbrahim; Başar, Ertuğrul; 0000-0001-5566-2392; Koç University Graduate School of Sciences and Engineering; Electrical and Electronics Engineering; 149116Publication Open Access SimRIS channel simulator for reconfigurable intelligent surface-empowered communication systems(Institute of Electrical and Electronics Engineers (IEEE), 2020) Yıldırım, İbrahim; Department of Electrical and Electronics Engineering; Başar, Ertuğrul; Faculty Member; Department of Electrical and Electronics Engineering; College of Engineering; 149116Reconfigurable intelligent surface (RIS)-assisted communication appears as one of the potential enablers for sixth generation (6G) wireless networks by providing a new way to optimize the communication system performance. This paper aims to fill an important gap in the open literature by providing an accurate, open-source, and widely applicable RIS channel model for mmWave frequencies. Our model is not only applicable in various indoor and outdoor environments but also includes the physical aspects of wireless propagation in the presence of an RIS as well as various practical 5G channel modeling issues. The open-source and comprehensive SimRIS Channel Simulator is also introduced in this paper to be used in computer simulations of RIS-assisted communication systems.Publication Restricted Vehicular visible light communication physical layer design based on measurement based channel statistics(Koç University, 2021) Gürbilek, Gökhan; Ergen, Sinem Çöleri; 0000-0002-7502-3122; Koç University Graduate School of Sciences and Engineering; Electrical and Electronics Engineering; 7211Publication Restricted Visible light communication assisted secure and efficient architecture for autonomous platoon(Koç University, 2017) Uçar, Seyhan; Ergen, Sinem Çöleri; Özkasap, Öznur; 0000-0002-7502-3122; 0000-0003-4343-0986; Koç University Graduate School of Sciences and Engineering; Computer Science and Engineering; 7211; 113507