Yazar "0000-0003-2592-3701" için listeleme
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Achievable rates for the three user cooperative multiple access channel
Edemen, Çağatay; Kaya, Onur (IEEE, 2008)For a three user Gaussian multiple access channel (MAC), we propose a new superposition block Markov encoding based cooperation scheme. Our scheme allows the three users to simultaneously cooperate both in pairs, and ... -
Achievable rates for two user cooperative OFDMA
Bakım, İsmail Sezi; Kaya, Onur (IEEE, 2010)We propose two encoding strategies for a two user cooperative Orthogonal Frequency Division Multiple Access (OFDMA) system, based on block Markov superposition encoding. We obtain the expressions for the resulting achievable ... -
Achieving the capacity region boundary of fading CDMA channels via generalized iterative waterfilling
Kaya, Onur; Ulukuş, Şennur (IEEE, 2006-11)We characterize the optimum power control policies that achieve arbitrary rate tuples on the boundary of the, capacity region of a power controlled, code division multiple access (CDMA) system in a fading channel with ... -
Age of Information in Practice
Uysal, Elif; Kaya, Onur; Baghaee, Sajjad; Beytur, Hasan Burhan (Cambridge University Press, 2023)While age of Information (AoI) has gained importance as a metric characterizing the freshness of information in information-update systems and time-critical applications, most previous studies on AoI have been theoretical. ... -
Birleşik çöz/sıkıştır ve ilet tabanlı işbirlikçi çoklu erişim
Kaya, Onur; Güneş, Mehmet (IEEE, 2012-04-18)Bu bildiride, iki kullanıcılı bir işbirlikçi çoklu erişim kanalı için çöz-ilet ve sıkıştır-ilet tekniklerinin eş zamanlı kullanılmasına dayalı kodlama ve kodçözme teknikleri geliştiriyor, ve karşılık gelen erişilebilir ... -
Channel adaptive encoding and decoding strategies and rate regions for the three user cooperative multiple access channel
Edemen, Çağatay; Kaya, Onur (IEEE, 2008)For a cooperative Gaussian multiple access channel (MAC), we propose a new channel adaptive three user cooperation strategy, based on a non-trivial extension of block Markov super-position encoding. We obtain the expressions ... -
Cognitive cooperative MAC with one primary and two secondary users: achievable rates and optimal power control
Edemen, Çağatay; Kaya, Onur (IEEE-INST Electrical Electronics Engineers Inc, 2014-11)We consider a three-user fading cognitive cooperative multiple access channel (MAC) with one primary and two secondary transmitters. We propose two encoding/decoding strategies with varying levels of cooperation, based on ... -
Cooperative multiple access under energy harvesting constraints
Su, Nuğman; Kaya, Onur; Ulukuş, Şennur; Koca, Mutlu (Institute of Electrical and Electronics Engineers Inc, 2015)We consider a cooperative multiple access channel (MAC) with two energy harvesting transmitters. The transmitters perform delay constrained transmission, i.e., every information block is encoded, transmitted and decoded ... -
Cooperative strategies and achievable rates for two user OFDMA channels
Bakım, İsmail Sezi; Kaya, Onur (IEEE-INST Electrical Electronics Engineers Inc, 2011-12)We propose three encoding strategies for a two user cooperative Orthogonal Frequency Division Multiple Access (OFDMA) system, based on block Markov superposition encoding (BMSE). We obtain the expressions for the resulting ... -
Delay tolerant cooperation in the energy harvesting multiple access channel
Kaya, Onur; Koca, Mutlu; Su, Nuğman; Ulukuş, Şennur (IEEE, 2016)We consider the optimum transmit scheduling problem for a two user energy harvesting cooperative multiple access channel. We assume a slotted model where energy harvests in each slot are known a priori. We propose a delay ... -
Enabling cooperation, resource allocation and receiver selection across cells: complementary fractional frequency reuse
Bakşi, Saygın; Kaya, Onur; Bıyıkoğlu, Türker (IEEE, 2013)For a multi-cell multiple access channel, we develop a comprehensive cooperative communication framework: we propose a novel complementary fractional frequency reuse (FFR) strategy tailored specifically for pairwise user ... -
Energy and data cooperation in energy harvesting multiple access channel
Gürakan, Berk; Şişman, Berrak; Kaya, Onur; Ulukuş, Sennur (IEEE, 2016)We consider the energy harvesting two user Gaussian multiple access channel (MAC), where both users harvest energy from nature. The users cooperate at the physical layer (data cooperation) by establishing common messages ... -
Energy and data cooperation in energy harvesting multiple access channel
Gürakan, Berk; Şişman, Berrak; Kaya, Onur; Ulukuş, Sennur (Institute of Electrical and Electronics Engineers Inc., 2016-08-26)We consider the energy harvesting two user Gaussian multiple access channel (MAC), where both users harvest energy from nature. The users cooperate at the physical layer (data cooperation) by establishing common messages ... -
Energy and data cooperative multiple access channel with intermittent data arrivals
Gürakan, Berk; Kaya, Onur; Ulukuş, Şennur (IEEE, 2018-03)We consider an energy harvesting two user cooperative Gaussian multiple access channel, where both of the users harvest energy from nature. The users cooperate at the physical layer (data cooperation) by establishing common ... -
Energy efficient transmission scheduling for channel-adaptive wireless energy transfer
Kaya, Onur; Bacinoǧlu, Baran Tan; Uysal Bıyıkoğlu, Elif (Institute of Electrical and Electronics Engineers Inc, 2018)We consider a fading communication link where the transmitter is powered by the receiver through wireless energy transfer (WET). A typical application scenario for this is the transmitter being a simple sensor while the ... -
Energy harvesting cooperative multiple access channel with data arrivals
Kaya, Onur; Gürakan, Berk; Ulukuş, Şennur (IEEE, 2016)We consider an energy harvesting two user cooperative Gaussian multiple access channel (MAC), where both of the users harvest energy from nature. The data packets arrive intermittently over time. The users overhear each ... -
Energy harvesting cooperative multiple access channel with decoding costs
Kaya, Onur; Arafa, Ahmed M.; Ulukuş, Şennur (IEEE, 2016)We consider an energy harvesting cooperative multiple access channel (AC) with decoding costs. In this setting, users cooperate at the physical layer (data cooperation) in order to increase the achievable rates. Data ... -
Enerji depolama kayıpları altında enerji hasat eden işbirlikli çoklu erişim
Su, Nuğman; Kaya, Onur; Koca, Mutlu (IEEE, 2017-06-27)Bu bildiride, enerji hasat eden iki vericiyle bir alıcının haberleştiği işbirlikli bir çoklu erişim kanalı için, sonlu batarya sığası ve enerji depolama kayıpları altında ulaşılabilir gönderim bölgesi eniyileme problemini ... -
Enerji hasadı yapan kablosuz ağlarda kullanıcı işbirliği ve kaynak tahsisi
Kaya, Onur; Ulukuş, Şennur (Tübitak, 2016-11)Yeni nesil haberleşme sistemlerinde, pillere ya da şehir elektriğine bağımlı olarak çalışan klasik haberleşme bileşenlerinin yerlerini, enerjilerini çevreden hasat eden, çevreye duyarlı ve uzun kullanım ömrüne sahip ... -
Improving age of information in random access channels
Atabay, Doğa Can; Uysal, Elif; Kaya, Onur (Institute of Electrical and Electronics Engineers Inc., 2020-07)We study Age of Information (AoI) in a random access channel where a number of devices try to send status updates over a common medium. Assuming a time-slotted scenario where multiple transmissions result in collision, we ...