A Wideband Direct Data Domain Genetic Algorithm Beamforming
Hassan M. A. Elkamchouchi, Mohamed M. Hassan · Radioengineering · 2015
In this paper, a wideband direct data-domain genetic algorithm beamforming is presented.Received wideband signals are decomposed to a set of narrow subbands using fast Fourier transform.Each sub-band is transformed to a reference frequency using the steering vector transformation.So, narrowband approaches could be used for any of these sub-bands.Hence, the direct datadomain genetic algorithm beamforming can be used to form a single 'hybrid' beam pattern with sufficiently deep nulls in order to separate and reconstruct frequency components of the signal of interest efficiently.The proposed approach avoids most of drawbacks of already-existing statistical and gradient-based approaches since formation of a covariance matrix is not needed, and a genetic algorithm is used to solve the beamforming problem.