Title :
Zero location study of the beam response of the maximum output SINR beamformer
Author :
Lei Zhang ; Wei Liu ; Bo Peng
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
Based on the uniform linear array (ULA) structure, zero locations of the beam pattern of the maximum output SINR (signal-to-interference-plus-noise ratio) beamformer are investigated. It is shown that for an M-sensor array, M - 1 nulls have to be formed in the optimum beam response and all of them are located on the unit circle. Furthermore, the nulls of the beamformer may shift from the real interference DOA angles to achieve the optimum output SINR. Analysis based on a 3-element ULA is provided, supported by simulations.
Keywords :
array signal processing; direction-of-arrival estimation; interference (signal); 3-element ULA; M-sensor array; ULA structure; beam pattern; interference DOA angle; maximum output SINR beamformer; null beamformer; optimum beam response; optimum output SINR; signal-to-interference-plus-noise ratio; uniform linear array; unit circle; zero location; beam pattern; uniform linear array; zero location;
Conference_Titel :
Sensor Signal Processing for Defence (SSPD 2011)
Conference_Location :
London
Electronic_ISBN :
978-1-84919-661-1
DOI :
10.1049/ic.2011.0157
