Title :
Generalized coherence [signal detection]
Author :
Gish, Herbert ; Cochran, Douglas
Author_Institution :
BBN Lab. Inc., Cambridge, MA, USA
Abstract :
The authors introduce a test for detecting the presence of a common signal on M noisy channels that generalizes a popular technique using the magnitude-squared coherence (MSC) estimate for detecting a common signal on two channels. The basis of this test is the generalized coherence estimate, a statistic involving the normalized M×M Gram matrix determinant, which reduces to the MSC estimate for M=2. The distribution of the generalized coherence estimate is derived under the assumptions of independent noise and no common signal on the M channels
Keywords :
interference (signal); matrix algebra; signal detection; statistics; Gram matrix determinant; common signal detection; independent noise; magnitude squared coherence estimate; noisy channels; statistic; Distribution functions; Gaussian noise; Laboratories; Particle measurements; Probability; Signal detection; Statistical analysis; Statistical distributions; Testing; Veins;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.197218
