Is it possible to solve a system of equations for the phase of complex exponentials











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I have a problem which I initially thought was simple but am not so sure anymore. I'd like to solve the following system of equations



$$alpha_1 = e^{jmathbf{x}theta_1} + e^{jmathbf{x}theta_2} + e^{jmathbf{x}theta_3}$$



$$alpha_2 = e^{jmathbf{y}theta_1} + e^{jmathbf{y}theta_2} + e^{jmathbf{y}theta_3}$$



$$alpha_3 = e^{jmathbf{z}theta_1} + e^{jmathbf{z}theta_2} + e^{jmathbf{z}theta_3}$$



where $mathbf{x},mathbf{y},mathbf{z}$ and each $alpha in mathbb{C}$ are given and $theta_{i}, i in [1,2,3]$ are the variables to be solved for. Is there some trick to this I'm not seeing?










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    up vote
    1
    down vote

    favorite












    I have a problem which I initially thought was simple but am not so sure anymore. I'd like to solve the following system of equations



    $$alpha_1 = e^{jmathbf{x}theta_1} + e^{jmathbf{x}theta_2} + e^{jmathbf{x}theta_3}$$



    $$alpha_2 = e^{jmathbf{y}theta_1} + e^{jmathbf{y}theta_2} + e^{jmathbf{y}theta_3}$$



    $$alpha_3 = e^{jmathbf{z}theta_1} + e^{jmathbf{z}theta_2} + e^{jmathbf{z}theta_3}$$



    where $mathbf{x},mathbf{y},mathbf{z}$ and each $alpha in mathbb{C}$ are given and $theta_{i}, i in [1,2,3]$ are the variables to be solved for. Is there some trick to this I'm not seeing?










    share|cite|improve this question


























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I have a problem which I initially thought was simple but am not so sure anymore. I'd like to solve the following system of equations



      $$alpha_1 = e^{jmathbf{x}theta_1} + e^{jmathbf{x}theta_2} + e^{jmathbf{x}theta_3}$$



      $$alpha_2 = e^{jmathbf{y}theta_1} + e^{jmathbf{y}theta_2} + e^{jmathbf{y}theta_3}$$



      $$alpha_3 = e^{jmathbf{z}theta_1} + e^{jmathbf{z}theta_2} + e^{jmathbf{z}theta_3}$$



      where $mathbf{x},mathbf{y},mathbf{z}$ and each $alpha in mathbb{C}$ are given and $theta_{i}, i in [1,2,3]$ are the variables to be solved for. Is there some trick to this I'm not seeing?










      share|cite|improve this question















      I have a problem which I initially thought was simple but am not so sure anymore. I'd like to solve the following system of equations



      $$alpha_1 = e^{jmathbf{x}theta_1} + e^{jmathbf{x}theta_2} + e^{jmathbf{x}theta_3}$$



      $$alpha_2 = e^{jmathbf{y}theta_1} + e^{jmathbf{y}theta_2} + e^{jmathbf{y}theta_3}$$



      $$alpha_3 = e^{jmathbf{z}theta_1} + e^{jmathbf{z}theta_2} + e^{jmathbf{z}theta_3}$$



      where $mathbf{x},mathbf{y},mathbf{z}$ and each $alpha in mathbb{C}$ are given and $theta_{i}, i in [1,2,3]$ are the variables to be solved for. Is there some trick to this I'm not seeing?







      systems-of-equations non-convex-optimization






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      edited 2 days ago









      Torsten Schoeneberg

      3,3761832




      3,3761832










      asked Nov 12 at 20:48









      Mark Wagner

      62




      62



























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