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Robust Adaptive Beamforming
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Book Chapter
Robust Adaptive Beamforming
2018
Overview
This chapter presents robust adaptive beamforming techniques that are generally suitable for wireless communications and particularly for base stations in cellular systems. For simplicity, and without losing the generality, it considers simple beamforming formulations in order to develop robust beamforming techniques. There are several existing approaches to robust adaptive beamforming. The so‐called linearly constrained minimum variance (LCMV) beamformer, also known as Capon's method, has been a popular beamforming technique. The chapter summarizes the standard minimum variance distortionless response (MVDR) and linearly constrained minimum variance (LCMV) beamformers with single and multiple constraints in the context of a single point source and a source with multipath rays, respectively. It introduces the worst‐case (WC) optimization formulation by summarizing general and special formulations for the steering vector uncertainty set. The chapter analyzes efficient implementations of single‐ and multiple‐WC formulations and presents a geometric illustration for the single‐WC implementation. It further provides simulations and a performance analysis.
Publisher
John Wiley & Sons, Incorporated,John Wiley & Sons, Ltd
Subject
ISBN
1118938240, 9781118938249
