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Detection of tone signals using a nonlinear energy tracker
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- Authors
- Issue Date
- 1997-05
- Citation
- Electronics Letters, 1997, 33, (11), pp.928-929, 22-May-1997
- Abstract
- Tone signals are widely used in communication
devices to request the initialisation of a specific operating mode to
the other side or to respond to it. For example, the operation of
V.34 class voiceband modems is initialised by tone signals specified
in ITU-T V.8 and V.25 Recommendations. These tone signals
must be detected rapidly and accurately to enable a fast start-up.
When tone signals are very narrowly spaced in frequency, the
complex implementation. We propose a simple scheme for detecting
these types of narrowly spaced tone signals. The proposed
detector eliminates the need for sharp notch filters, by employing
a simple nonlinear processor called Teagers energy tracker [l].
The detector is analytically designed and its performance is verified
by computer simulation
- ISSN
- 0733-8716
- Language
- English
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