Detecting the number of signals using antenna array: a single threshold solution
Hu, O., Zheng, F.-C. and Faulkner, M. (1999) Detecting the number of signals using antenna array: a single threshold solution. In: ISSPA '99. Fifth International Symposium on Signal Processing and Its Applications, 1999., 22-25 August 1999, Brisbane, Australia, pp. 905-908.
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To link to this article DOI: 10.1109/ISSPA.1999.815818
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.
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