A Technique to Compute Smooth Amplitude, Phase, and Frequency Modulations From the Analytic Signal
Data(s) |
01/10/2012
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Resumo |
Gabor's analytic signal (AS) is a unique complex signal corresponding to a real signal, but in general, it admits infinitely-many combinations of amplitude and frequency modulations (AM and FM, respectively). The standard approach is to enforce a non-negativity constraint on the AM, but this results in discontinuities in the corresponding phase modulation (PM), and hence, an FM with discontinuities particularly when the underlying AM-FM signal is over-modulated. In this letter, we analyze the phase discontinuities and propose a technique to compute smooth AM and FM from the AS, by relaxing the non-negativity constraint on the AM. The proposed technique is effective at handling over-modulated signals. We present simulation results to support the theoretical calculations. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/44991/1/ieee_sig_pro_let_19-10_623_2012.pdf Venkitaraman, Arun and Seelamantula, Chandra Sekhar (2012) A Technique to Compute Smooth Amplitude, Phase, and Frequency Modulations From the Analytic Signal. In: IEEE SIGNAL PROCESSING LETTERS, 19 (10). pp. 623-626. |
Publicador |
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
Relação |
http://dx.doi.org/10.1109/LSP.2012.2209872 http://eprints.iisc.ernet.in/44991/ |
Palavras-Chave | #Electrical Engineering |
Tipo |
Journal Article PeerReviewed |