| Autor: |
Yong Hoon Lee, Yong Wan Park, Hyon Sock Chang |
| Rok vydání: |
2000 |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Communications. 48:921-924 |
| ISSN: |
0090-6778 |
| DOI: |
10.1109/26.848549 |
| Popis: |
We propose a two-dwell acquisition system with a serial search that operates simultaneously with verification. This system employs two correlation blocks: one for search and the other for verification. The search block continuously searches for the time instants at which the partial correlation value exceeds a time-varying threshold, and at those instants, the verification block is reset and reinitiated until code acquisition is declared by the verification. The time-varying threshold is updated depending on the partial correlation. The mean acquisition time for AWGN and multiple access environment is evaluated by computer simulation and is compared with that of a two-dwell system which alternates search and verification modes. The results indicate that the proposed system can perform much better than the conventional one. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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