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Antenna Selection in MIMO Relaying Networks

Tarkhan, Ali Asghar | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 41861 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Farzaneh, Forouhar; Hoseini Khalaj, Babak
  7. Abstract:
  8. Multiple-input multiple-output (MIMO) systems have been considered a lot in the recent decade. Use of these systems results in higher data rate and higher reliability in communication systems. Use of intermediate nodes which are called relay in cooperative networks result in higher reliability and higher coverage range in wireless networks. Finally use of multiple antennas in cooperative networks results in higher data rate, higher reliability and higher coverage range in wireless networks. A drawback of multi-antenna systems is that more antennas require more RF chains. More RF chains result in higher computational complexity and higher hardware cost. A remedy for this drawback is the antenna selection strategy in which subset of antennas that has better performance based on capacity or received SNR is selected in transmitter and/or receiver side. Finding the best subset of antennas require comprehensive search among available subsets of antennas that can result in high complexity. So it is required to find methods with lower the complexity. Another issue in multi-antenna system in practice is the limited space in the array to place more antennas in them results in mutual coupling and spatial correlation. Mutual coupling and spatial correlation should be considered for a more accurate analysis in multi-antenna systems. In this thesis, we intend to consider the mutual coupling and spatial correlation in multi-antenna systems and propose antenna selection methods that have lower computational complexity
  9. Keywords:
  10. Mutual Coupling ; Multiple Input Multiple Output (MIMO)System ; Cooperative Network ; Spatial Correlation ; Antenna Selection

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