Title :
Blind adaptive beamforming for wideband circular arrays
Author_Institution :
Commun. Res. Group, Univ. of Sheffield, Sheffield
Abstract :
An approach for blind adaptive wideband beamforming is proposed based on a uniform circular array. The received array signals are first transformed into different phase modes and each phase mode output is then processed by a filter to achieve a frequency independent response. As a result, a set of instantaneous mixtures of the original source signals is obtained and the original wideband beamforming problem can be readily solved using the standard instantaneous BSS algorithms and the original source signals can be recovered one by one or simultaneously, depending on the specific requirement.
Keywords :
adaptive signal processing; array signal processing; blind adaptive wideband beamforming; frequency independent response; received array signals; source signals; uniform circular array; wideband circular arrays; Adaptive arrays; Array signal processing; Finite impulse response filter; Frequency; IIR filters; Phased arrays; Sensor arrays; Signal processing; Source separation; Wideband; blind beamforming; circular arrays; complexity; wideband;
Conference_Titel :
Acoustics, Speech and Signal Processing, 2009. ICASSP 2009. IEEE International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-2353-8
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2009.4960012