Time-frequency-modulation representation of stochastic signals
Jackson, PJB (2007) Time-frequency-modulation representation of stochastic signals In: 15th International Conference on Digital Signal Processing, 2007-07-01 - 2007-07-04, Cardiff.
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When a noise process is modulated by a deterministic signal, it is often useful to determine the signal's parameters. A method of estimating the modulation index m is presented for noise whose amplitude is modulated by a periodic signal, using the magnitude modulation spectrum (MMS). The method is developed for application to real discrete signals with time- varying parameters, and extended to a 3D time-frequency- modulation representation. In contrast to squared-signal approaches, MMS behaves linearly with the modulating function allowing separate estimation of m for each harmonic. Simulations evaluate performance on synthetic signals, compared with theory, favouring a first-order MMS estimator.
|Item Type:||Conference or Workshop Item (Paper)|
|Additional Information:||© 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.|
|Divisions:||Faculty of Engineering and Physical Sciences > Electronic Engineering > Centre for Vision Speech and Signal Processing|
|Depositing User:||Symplectic Elements|
|Date Deposited:||20 Mar 2012 14:36|
|Last Modified:||23 Sep 2013 18:51|
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