Yazar "Ulukuş, Şennur" için listeleme
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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 ... -
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 ... -
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 ... -
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 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 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 ... -
Power allocation for cooperative communications
Kaya, Onur; Ulukuş, Şennur (IGI Global, 2009)In this chapter, we review the optimal power allocation policies for fading channels in single user and multiple access scenarios. We provide some background on cooperative communications, starting with the relay channel, ... -
Power control for fading cooperative multiple access channels
Kaya, Onur; Ulukuş, Şennur (IEEE, 2007-08)For a fading Gaussian multiple access channel with user cooperation, we obtain the power allocation policies that maximize the average rates achievable by block Markov superposition coding, subject to average power ...