Title :
Blind concurrent beamformer
Author :
Ortolan, L. ; Santos, T.L.S. ; DeCastro, M.C.F. ; DeCastro, F.C.C.
Author_Institution :
Centro de Tecnologia Wireless, Pontificia Univ. Catolica do Rio Grande do Sul, Porto Alegre
Abstract :
The electronically steerable parasitic array radiator (ESPAR) is a smart antenna based on the adjustment of reactances at parasitic elements. A new blind beamformer is presented, for use with reactance domain arrays, such as the ESPAR. Two stochastic gradient algorithms work concurrently so that two distinct cost functions are simultaneously minimised. Results show that the new blind beamformer presents a faster convergence and a lower steady-state mean squared error
Keywords :
adaptive antenna arrays; adaptive signal processing; antenna radiation patterns; array signal processing; gradient methods; monopole antenna arrays; ESPAR; blind concurrent beamformer; electronically steerable parasitic array radiator; parasitic elements; reactance domain arrays; smart antenna; steady-state mean squared error; stochastic gradient algorithms;
Journal_Title :
Electronics Letters
