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      ADMM based mainlobe power constrained phase-only sidelobe supression

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      Author
      Alp, Yaşar Kemal
      Arıkan, Orhan
      Date
      2014
      Source Title
      Proceedings of the 22nd Signal Processing and Communications Applications Conference, SIU 2014
      Publisher
      IEEE
      Pages
      610 - 613
      Language
      Turkish
      Type
      Conference Paper
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      Abstract
      A novel sidelobe suppression technique is proposed for phased arrays, where only the phases of the array elements are adjusted to suppress the gain in the direction of interest while keeping the mainlobe power at a certain level. Mainlobe power constrained sidelobe suppression is formulated as a convex RSDP (Relaxed Semidefinite Program). Solution to resultant RSDP is obtained by ADMM (Alternating Direction Method of Multipliers) technique, which can handle designs for arrays with number of elements is significantly larger than that can be handled by other convex solvers such as CVX. In addition, although the available convex solvers can not provide a rank-1 solution matrix, a rank-1 solution matrix is obtained by modifying the ADMM iterations. In the conducted experiments, it is observed that proposed ADMM based method can achieve more than 10dB improvement in sidelobe levels compared to alternative techniques.
      Keywords
      Alternating direction method of multipliers
      Convex solver
      Phased array
      Relaxed semidefinite program
      Electrical engineering
      Semidefinite programs
      Side-lobe suppression
      Sidelobe levels
      Sidelobe suppression technique
      Solution matrix
      Signal processing
      Permalink
      http://hdl.handle.net/11693/26897
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/SIU.2014.6830303
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      • Department of Electrical and Electronics Engineering 3619
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