Abstract
A novel, adaptive time-frequency (ATF) exciser for suppressing the interference in Direct Sequence Spread Spectrum (DSSS) communications systems is proposed in this paper The adaptability of the proposed algorithm is two-fold. First, the domain of excision is decided. Then, for time-localized interference, excision is performed in the time domain. For a frequency-localized interference, an adaptive subband transform is employed. This joint treatment of time and frequency domains overcomes the performance limitations of the fixed transform-based excision algorithms. It is shown that the proposed ATF exciser-based DSSS receiver drastically outperforms the existing systems. Its performance is nearly optimal and very robust to the variations of the undesired signal.
| Original language | English (US) |
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| Pages | 492-495 |
| Number of pages | 4 |
| State | Published - 1994 |
| Event | Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis - Philadelphia, PA, USA Duration: Oct 25 1994 → Oct 28 1994 |
Other
| Other | Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis |
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| City | Philadelphia, PA, USA |
| Period | 10/25/94 → 10/28/94 |
All Science Journal Classification (ASJC) codes
- General Engineering