Title :
Detecting the number of signals using antenna array: a single threshold solution
Author :
Hu, Ohia ; Zheng, Fuchun ; Faulkner, Michael
Author_Institution :
Sch. of Commun. & Inf., Melbourne, Vic., Australia
Abstract :
A new approach is presented to identify the number of incoming signals in antenna array processing. The new method exploits the inherent properties existing in the noise eigenvalues of the covariance matrix of the array output. A single threshold has been established concerning information about the signal and noise strength, data length, and array size. When the subspace-based algorithms are adopted the computation cost of the signal number detector can almost be neglected. The performance of the threshold is robust against low SNR and short data length
Keywords :
array signal processing; covariance matrices; direction-of-arrival estimation; eigenvalues and eigenfunctions; linear antenna arrays; noise; signal detection; DOA estimation; antenna array; antenna array processing; array output; array size; computation cost; covariance matrix; linear array system; low SNR; noise eigenvalues; noise strength; short data length; signal detection; signal number detector; signal strength; single threshold solution; subspace-based algorithms; threshold performance; Antenna arrays; Array signal processing; Computational efficiency; Covariance matrix; Detectors; Eigenvalues and eigenfunctions; Noise robustness; Signal detection; Signal processing; Signal to noise ratio;
Conference_Titel :
Signal Processing and Its Applications, 1999. ISSPA '99. Proceedings of the Fifth International Symposium on
Conference_Location :
Brisbane, Qld.
Print_ISBN :
1-86435-451-8
DOI :
10.1109/ISSPA.1999.815818
