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Dispersive Effect Correction for Ultra-Short Impulse Signals Using Joint Time-Frequency Transforms
The Joint Time-Frequency Transforms (JTFT) are employed to identify the time-frequency distribution of dispersed ultra short impulse signals transmitted through unknown propagation channels in the presence of noise. The channel dispersive effect can be corrected by pre-distorting the transmitted sig...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Радіоастрономічний інститут НАН України
2002
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| Series: | Радиофизика и радиоастрономия |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/122358 |
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| Summary: | The Joint Time-Frequency Transforms (JTFT) are employed to identify the time-frequency distribution of dispersed ultra short impulse signals transmitted through unknown propagation channels in the presence of noise. The channel dispersive effect can be corrected by pre-distorting the transmitted signals or using matched filter at receiver from the estimated time-frequency. Simulation results show both Short Time Fourier Transform (STFT) and Adaptive Local Cosine Transform (ALCT) are effective to correct the dispersive effects for ultra-short impulse signals. |
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