Comparison between the performance of spectrogram and multi-window spectrogram in digital modulated communication signals
In this paper,we compare the performance of spectrogram and new variation of multi-windows(WM)spectrogram for various digital modulated signals.The windows used in the MW spectrogram are conbination of Slepian sequences instead of using all the sequences.The comparison in the time-frequency represen...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2007
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| Subjects: | |
| Online Access: | http://eprints.utm.my/id/eprint/7142/1/Comparison_Between_Performance_Spectrogram_Multi-Window.pdf http://eprints.utm.my/id/eprint/7142/ http://dx.doi.org/10.1109/ICTMICC.2007.4448613 |
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| Institution: | Universiti Teknologi Malaysia |
| Language: | English |
| Summary: | In this paper,we compare the performance of spectrogram and new variation of multi-windows(WM)spectrogram for various digital modulated signals.The windows used in the MW spectrogram are conbination of Slepian sequences instead of using all the sequences.The comparison in the time-frequency representation is made in terms of main-lobe width(WLM)and peak to side-lobe ratio(PSLR)of the signals used.In the presence of noise,performance is compared in terms of variance in the estimated from the instantaneous frequency.Bit duration and frequency are estimated from the time-frequency the instantaneous frequency(IF),which is derived from the time-frequency representation.The bias in the estimated bit duration is also calculated to compare the performance between spectrogram and WM spectrogram. In general,the time-frequency representation for the spectrogram is better than WM spectrogram.However,WM spectrogram is superior to spectrogram in terms of bit duration estimation. |
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