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Browsing Elektrik- Elektronik Mühendisliği by Subject "Wireless communication systems."

Browsing Elektrik- Elektronik Mühendisliği by Subject "Wireless communication systems."

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  • An adaptive GM-C filter based post-equalizer for wide-band visible light communication systems 
    Haydar, Emrah. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Visible Light Communication (VLC), more commonly known as Li-Fi (Light Fidelity), has been a buzzword since it was first introduced by Harald Haas in 2011. The idea is that a light source can be used as both illumination ...
  • Blind collision resolution for wireless multiple access using independent component analysis 
    Özgül, Barış. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2002., 2002.)
    In wireless random access networks, packet collision is an important medium access problem for the packet radio environment. Simple protocols such as the slotted ALOHA do not provide an efficient solution to the collision ...
  • Channel allocation system for wireless video communication in 802.11n MESH networks 
    Tekincan, Sinan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    With the latest technological achievements, wireless communication is spreading all around the world and entering into the daily life of individuals more. Especially with the development of 802.11n standard, high data rate ...
  • Communication theoretic analysis of digital fingerprinting under linear averaging Gaussian attack 
    Dalkılıç, Özgür. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    In this thesis, performance of correlation detector is investigated from a communication theoretic perspective for additive fingerprinting under Gaussian averaging attack. First, digital fingerprinting problem is modeled ...
  • Design and analysis of non-orthogonal multiple access in communication systems 
    Coşandal, İsmail. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2021., 2021.)
    Non-Orthogonal Multiple Access (NOMA) has emerged as a promising technique to satisfy the high demand of users in future wireless networks. The NOMA literature is heavily based on Power-Domain NOMA (PD-NOMA), which inherently ...
  • Enhanced resource-aware video multicasting via access gateways in multi-hop wireless mesh networks 
    Rakanoğlu, Gürkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Wireless mesh networks (WMN) are the communication networks made up of radio nodes organized in a mesh topology. In recent years there are many applications like video survelliance, video conferencing that have been ...
  • Hardware implementation for 802.11b/g/n signal classification 
    Çetin, Ramazan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The number of devices which can communicate wirelessly are increasing with the technological improvements day by day. This situation causes congestion on electromagnetic RF spectrum. RF spectrum should be utilized e ciently ...
  • Indoor propagation model for office environment at 900 MHZ and 1800 MHZ 
    Erol, Mehmet Akif. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Propagation of electromagnetic waves became an important area of research since the invention of wireless communication. Propagation models are generally divided into three categories. First category includes terrestrial ...
  • Mobility tracking algorithms for cellular networks based on Kalman filtering 
    Yeşilyurt, Alper. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    This thesis is an in depth theoretical and practical survey of dynamic mobility tracking systems specifically for cellular networks. A user mobility state model that is originally proposed for tracking targets in tactical ...
  • Multiple input multiple output transmission techniques and link adaptation in wireless systems with dual-polarized antennas 
    Kılıç, Yakup. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The use of dual-polarized antennas theoretically double the number of virtual antennas used in the system. On the other hand, the correlation effects and the crosspolar discrimination (XPD) deteriorates the system performance. ...
  • Non-orthogonal multiple access with two sets of orthogonal signal waveforms 
    Çalışkan, Ersoy. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The rapid development of the mobile systems causes dramatic increase on data traffic. Due to the bandwidth scarcity, existing multiple access systems may not over come this problem [1]. These multiple access techniques are ...
  • Performance bounds on the localization of cellular phones using RSS measurements with unknown pathloss exponents 
    Sarı, Veli. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    In this thesis, performance of an Received Signal Strength (RSS) based location estimation model, which incorporates the antenna radiation pattern information into log-normal path loss the signal model is evaluated. ...
  • Space-time polarization diversity in multiple input multiple output communication systems 
    Sevindik, Volkan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    In wireless communications systems, diversity techniques are widely used to combat the e ects of wireless fading channels. Multiple-input multiple-output (MIMO) systems have better performance under fading channels than ...
  • Stable - matching based resource allocation methods in wireless communication systems 
    Sabuncu Sandal, Yağmur. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    As the number of smart devices increases day by day, the need for new resource allocation techniques also increases. 5G technologies such as Long-Term Evolution Advanced (LTE-A), carrier aggregated heterogeneous networks ...
  • User cooperative communications in ultra-wideband wireless networks 
    Yalçın, Cumhur Ozan. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    In this thesis, we consider the user cooperation in ultra-wideband (UWB) systems characterized by severe frequency selective channels. To circumvent this problem we present a space-time (ST) coded UWB system employing the ...

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