Subband adaptive antenna array for wideband wireless communications

Subband array processing is considered a promising method in the fields of echo cancellation and sonar. With the growth of wideband communication services, the computation load and real time performance of an adaptive antenna array become one of the key issues in the wideband mobile environment. In the paper we apply subband processing technology to wideband beamforming of mobile communications instead of the conventional space-time processing. By using this scheme, the reduction in computation becomes viable with additional advantages such as parallelisation of processing tasks and reduced spectral dynamics.