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Waveform design in MIMO radar using radial point interpolation method

Imani, S ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1109/LCOMM.2018.2864302
  3. Abstract:
  4. In this letter, we consider the problem of waveform design in colocated multiple-input multiple-output radars in order to obtain a desired beampattern. In this problem, practical constraints, such as constant envelope (CE) and low peak-to-average power ratio, are very important. Therefore, we propose a simple method to generate some practical waveforms, such as different versions of phase-shift keying and pulse-amplitude modulation. We map a non-CE to the desired finite alphabet by a mapping function (MP). In the proposed method, first, the values of cross-correlation relationship between the input and the output of MP are calculated in a few points, and then, using radial point interpolation method, the mentioned relationship and its first-order derivative are derived in the remaining points. Finally, we use the obtained derivative in order to design the desired waveform in an unconstraint problem by a gradient descend algorithm. Simulation results show that there are many different waveforms on which the proposed method can approximate the desired beampattern with a high accuracy. © 1997-2012 IEEE
  5. Keywords:
  6. Radial point interpolation method (RPIM) ; Waveform design ; Computational mechanics ; Interpolation ; MIMO systems ; Waveform analysis ; Cross correlations ; Finite alphabet ; First order derivatives ; Input and outputs ; Multiple input multiple output (MIMO) radars ; Peak to average power ratio ; Radial point interpolation method ; Waveform designs ; MIMO radar
  7. Source: IEEE Communications Letters ; Volume 22, Issue 10 , 2018 , Pages 2076-2079 ; 10897798 (ISSN)
  8. URL: https://ieeexplore.ieee.org/document/8429923