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Optimum Detector and Power Allocation of MIMO Radar Systems

Chitgarha, Mohammad Mahdi | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 44508 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Nayebi, Mohammad Mehdi; Behnia, Fereidoon
  7. Abstract:
  8. MIMO (Multi Input Multi Output) Radars issue is a new topic in Radar systems field and power allocation in these systems is very important to improve their performance.In this thesis, at first, two optimum detectors for MIMO radars with widely separated antennas are designed. In the first one, received signal in all receivers is gathered in a central processor and centralized detection is performed. This type of detection needs too much process power and is complex. Because of complexity of detector, probability of detection is very difficult to derive and deflection criterion is used for evaluating system performance. In the second one, each receiver processes received signals from all transmitters and detects existence of a target. Then output data from receivers are gathered in the central data processor and the final decision is made here. In this detector, probability of detection is derived.Next topic is power allocation. In a MIMO system, uniform power allocation is not always optimum. In this thesis total power is kept constant and different level of power is allocated to transmitters so that the best performance is achieved. For each designed detector, particular power allocation algorithm is proposed. More power is allocated to transmitters for which we have more SNR in receivers
  9. Keywords:
  10. Widely Separated MIMO Radar ; Multiple Input Multiple Output (MIMO)System ; Neyman-Pearson Detector ; Power Allocation ; Swerling Model

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