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    Fourier-Based Transmit Beampattern Design Using MIMO Radar

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    Type
    Article
    Authors
    Lipor, John
    Ahmed, Sajid
    Alouini, Mohamed-Slim cc
    KAUST Department
    Electrical Engineering Program
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    Electrical Engineering Program
    Communication Theory Lab
    Date
    2014-05
    Permanent link to this record
    http://hdl.handle.net/10754/575713
    
    Metadata
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    Abstract
    In multiple-input multiple-output (MIMO) radar settings, it is often desirable to transmit power only to a given location or set of locations defined by a beampattern. Transmit waveform design is a topic that has received much attention recently, involving synthesis of both the signal covariance matrix,, as well as the actual waveforms. Current methods involve a two-step process of designing via iterative solutions and then using to generate waveforms that fulfill practical constraints such as having a constant-envelope or drawing from a finite alphabet. In this paper, a closed-form method to design for a uniform linear array is proposed that utilizes the discrete Fourier transform (DFT) coefficients and Toeplitz matrices. The resulting covariance matrix fulfills the practical constraints such as positive semidefiniteness and the uniformelemental power constraint and provides performance similar to that of iterative methods, which require a much greater computation time. Next, a transmit architecture is presented that exploits the orthogonality of frequencies at discrete DFT values to transmit a sum of orthogonal signals from each antenna. The resulting waveforms provide a lower mean-square error than current methods at a much lower computational cost, and a simulated detection scenario demonstrates the performance advantages achieved.
    Citation
    Lipor, J., Ahmed, S., & Alouini, M.-S. (2014). Fourier-Based Transmit Beampattern Design Using MIMO Radar. IEEE Transactions on Signal Processing, 62(9), 2226–2235. doi:10.1109/tsp.2014.2307838
    Sponsors
    This work was supported by a grant from the Office of Competitive Research Funding (OCRF) at King Abdullah University of Science and Technology (KAUST). This work will be presented in part at the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Florence, Italy, May 2014.
    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Journal
    IEEE Transactions on Signal Processing
    DOI
    10.1109/TSP.2014.2307838
    ae974a485f413a2113503eed53cd6c53
    10.1109/TSP.2014.2307838
    Scopus Count
    Collections
    Articles; Electrical Engineering Program; Electrical Engineering Program; Communication Theory Lab; Communication Theory Lab; Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

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