Signal presence determination method for use in a contaminated m

Details Signal presence determination method for use in a contaminated m Signal presence determination method for use in a contaminated m

1976-06-07

1982-11-09

Psitos, Aristotelis M.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328163, 307356, 307358, 179 1P, 455 63, 455 67, 360 31, H03B 100, H03B 104, H03K 5153, H03K 522

Patent

active

043587380

ABSTRACT:
A signal presence detection method for use in systems where a multiplicity of types of noise is expected, wherein the spectral characteristics of the input wave is compared with corresponding characteristics of the expected noise wave and wherein the determination that signal is present is made only if the input wave mismatches all of the compared noise waves' spectral characteristics. Another embodiment of the invention compares the waveshape of the input wave and the noise waveshape.
As a result of this procedure, a sensitive signal presence indication is obtained which is relatively immune to noise level.

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Dictionary of Electronics (Radio Shack.RTM.), 1974, p. 653.
Communication Systems and Techniques, Schwartz et al., McGraw-Hill, 1966, pp. 411-415.

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