Yazar "Edemen, Çağatay" 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 ... -
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 ... -
Channel adaptive user cooperation strategies for fading wireless channels
Edemen, Çağatay (Işık Üniversitesi, 2006)In this dissertation, a channel adaptive method is proposed for a two user halfduplex cooperative communication system under the assumption of perfect channel state information at the transmitters and the receiver. An ... -
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 ... -
Design and optimization of multiuser cooperative protocols for wireless networks
Edemen, Çağatay (Işık Üniversitesi, 2014-09-12)Recently, the main trend in wireless communications has shifted from voice transmission to data communication. Naturally, this shift caused an increase in the data rate and bandwidth requirements. Being a limited and thus ... -
İşbirlikçi bilişsel radyo sistemleri için kodlama ve kod çözme teknikleri, erişilebilir veri hızları ve kaynak tahsisi
Kaya, Onur; Bakşi, Saygın; Edemen, Çağatay (Tübitak, 2013-10-01)İşbirlikli iletişim ve bilişsel radyo, yeni nesil kablosuz haberleşme ağlarında kapasite ve iletişim kalitesinin artırımı için kilit tekniklerdir. Bu tekniklerin her ikisi de, çevrelerinin farkında olan ve bu farkındalığı ... -
Kablosuz iletişim ağlarında kullanıcı yardımlaşmasına dayalı protokollerin dizaynı, optimum kaynak tahsisi ve iletim stratejileri
Kaya, Onur; Edemen, Çağatay (Tübitak, 2009-03-01)Bu projede, çoklu erişim kanallarında kanala uyarlamalı özgün kullanıcı işbirliği stratejileri geliştirilmiştir. Literatürde yalnızca iki kullanıcı için ele alınan karşılıklı ve eşzamanlı işbirliği teknikleri, üç kullanıcılı ... -
A new block Markov coding strategy for pairwise and collective cooperation in the three user MAC
Edemen, Çağatay; Kaya, Onur (IEEE, 2013)For a three user cooperative multiple access channel (MAC), we propose a new block Markov superposition encoding strategy, which enables all three users to cooperate collectively as well as in pairs. We obtain the resulting ... -
Radio resource management for OFDMA-based mobile relay enhanced heterogenous cellular networks
Baştürk, İlhan; Özbek, Berna; Edemen, Çağatay; Tan, Ahmet Serdar; Zeydan, Engin; Ergüt, Salih (IEEE, 2013)In this paper, we focus on the radio resource management problem for the Orthogonal Frequency Division Multiple Access (OFDMA)-based mobile relay-enhanced het erogenous cellular networks. We combine mobile relaying and ...