ABSTRACT
The growth in the number of wireless devices and applications has led to a crowding of the wireless spectrum and more stringent requirements for receiver designs. Radio frequency interference continues to be a persistent problem in many communication systems and will potentially exacerbate as the unused wireless spectrum continues to shrink. The minimum variance distortionless response (MVDR) or Capon beamformer is one of the adaptive optimum statistical beamformers that ensures a distortionless response for a predefined steering direction. This chapter looks at the MVDR beamforming problem in a multiple access interference environment. The MVDR beamformer is sensitive to errors such as array response mismatch and the effect of finite snapshots. To keep the snapshot requirement to a minimum, the proposed method provides a robust solution for the MVDR array response vector mismatch problem and limited data snapshots. The new beamforming method is developed for uniform linear array configuration.
