Abstract
An adaptive double-dwell acquisition system of pseudo-noise (PN) sequences is presented for direct-sequence spread-spectrum (DS-SS) systems. Since existing acquisition systems have a fixed threshold value, they are unable to adapt to various mobile communications environments. Accordingly, this results in a high false alarm rate or low detection probability. Therefore, an adaptively varying threshold scheme is proposed through the use of a constant false alarm rate (CFAR) algorithm. By deriving formulas for the detection probability and false alarm rate of the proposed adaptive system, its performance was analyzed and compared to an existing one. The results showed that the proposed adaptive double-dwell acquisition system provides a better performance than conventional systems.
| Original language | English |
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| Pages | 139-143 |
| Number of pages | 5 |
| State | Published - 2000 |
| Event | 21st Century Military Communications Conference Proceedings MILCOM 2000 - Los Angeles, CA, United States Duration: 22 Oct 2000 → 25 Oct 2000 |
Conference
| Conference | 21st Century Military Communications Conference Proceedings MILCOM 2000 |
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| Country/Territory | United States |
| City | Los Angeles, CA |
| Period | 22/10/00 → 25/10/00 |