Eigenvalue approach to joint power control and beamforming for CDMA systems

In this paper joint power control and beamforming is examined using a generalized eigenvalue problem approach. The joint formulation of these two problems from this point of view is natural, since the beamforming weight vector is the eigenvector related to the maximum eigenvalue. It is also known that the principal eigenvector, of the generalized eigenvalue problem between the signal and interference autocovariance matrices and the signal-to-interference-and-noise-ratio used for the uplink power control can be found in the eigenvalue of the same problem. An approach with sub-optimal beamforming during iteration is taken. Snapshot simulations are made.