Name
Title | ||
|---|---|---|
A Technique to Compute Smooth Amplitude, Phase, and Frequency Modulations From the Analytic Signal |
Abstract | ||
|---|---|---|
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. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/LSP.2012.2209872 | Signal Processing Letters, IEEE |
Keywords | Field | DocType |
Gabor filters,amplitude modulation,frequency modulation,phase modulation,AM-FM signal,Gabor analytic signal,frequency modulation,infinitely-many combinations,nonnegativity constraint,over-modulated signals,phase discontinuity,phase modulation,real signal,smooth amplitude modulation,unique complex signal,Analytic signal,amplitude modulation,over-modulation,phase modulation | Analytic signal,Phase modulation,Mathematical analysis,Control theory,Artificial intelligence,Analog signal,Pattern recognition,Signal transition,Analog transmission,Amplitude modulation,Frequency modulation,Pulse-amplitude modulation,Mathematics | Journal |
Volume | Issue | ISSN |
19 | 10 | 1070-9908 |
Citations | PageRank | References |
4 | 0.45 | 4 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Arun Venkitaraman | 1 | 4 | 0.45 |
| Chandra Sekhar Seelamantula | 2 | 48 | 7.95 |