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      • Department of Electrical and Electronics Engineering
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      Çok kullanıcılı çok antenli sistemlerde iş birlikli iletim

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      Author
      Yazarel, Y. K.
      Aktaş, Defne
      Date
      2008-04
      Source Title
      2008 IEEE 16th Signal Processing, Communication and Applications Conference, SIU
      Publisher
      IEEE
      Pages
      [1] - [4]
      Language
      Turkish
      Type
      Conference Paper
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      Abstract
      Bu çalışmada işbirlikli, çok kullanıcılı, ve çok antenli bir haberleşme sisteminde telsiz erişim terminallerinin en iyi veri iletimi tekniğine ortaklaşa karar vermeleri problemini inceliyoruz. Burada pek çok çalışmadan farklı olarak kullanıcıların bireysel başarım hedefleri ve anten başına iletim gücü kısıtlamaları olduğu durumu ele alıyoruz. Önceki bir çalışmamızda bu kısıtlamalar altında en iyi sonucu bulan döngülü bir algoritma sunmuştuk. Ancak bu algoritma merkezi bir yapıda olduğu için tam anlamıyla dağıtılmış şekilde gerçeklenememektedir. Bununla birlikte basit yaklaşıklıklar kullanarak en iyiye yakın bir başarım sağlayan ve kısıtlı ve yerel veri iletimi ile gerçeklenebilecek etkin bir algoritma öneriyoruz.
       
      In this work, we investigate the problem of jointly determining the optimal transmission scheme at the base stations in a cooperative multiuser multiple antenna system. In this optimization problem, different than majority of other works in the literature, we consider the case where there are individual performance targets for the users and per antenna power constraints at the base stations. In an earlier work, we presented an iterative algorithm that computes the solution of this optimization problem. However since the proposed algorithm has a centralized structure, it can not be implemented in a fully distributed nature. Nevertheless by utilizing a simple approximation, we propose a suboptimal algorithm that can be implemented with local and limited information exchange between base stations. ©2008 IEEE.
      Keywords
      Cooperative transmissions
      Individual performances
      Iterative algorithms
      Limited informations
      Multiple antennas
      Multiuser
      Multiuser MIMO systems
      Optimal transmissions
      Optimization problems
      Power constraints
      Suboptimal algorithms
      Antennas
      Approximation algorithms
      Base stations
      Computer systems
      MIM devices
      Multipath propagation
      Multiplexing
      Optimization
      Signal processing
      Transmissions
      Problem solving
      Permalink
      http://hdl.handle.net/11693/26836
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/SIU.2008.4632620
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      • Department of Electrical and Electronics Engineering 3524
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