Optimization of Interference Alignment Beamforming Vectors

  title={Optimization of Interference Alignment Beamforming Vectors},
  author={Douglas Kim and Murat Torlak},
  journal={IEEE Journal on Selected Areas in Communications},
The K user interference alignment scheme proposed by Cadambe and Jafar (CJ) achieves K/2 degrees of freedom for networks with frequency selective channels. In this paper, we provide two new algorithms that optimize the precoding subspaces which maximize the data rate performance of the CJ scheme while maintaining the achievable degrees of freedom. One design is obtained as a global solution of a constrained convex (concave) optimization problem that maximizes the sum rate. The other design… CONTINUE READING
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