In this letter, we describe a decision method using multiple threshold values for direct-sequence spread-spectrum (DS-SS) code acquisition systems. We apply this technique to a conventional double dwell serial search algorithm and analyze it in terms of mean code acquisition time. Numerical results show that our proposed scheme outperforms the conventional one by 0.2-0.5 sec with respect to the mean code acquisition time because multiple threshold values mitigate the possible decline in search performance caused by the use of a single threshold.
Bibliographical noteFunding Information:
Manuscript received May 15, 2001. The associate editor coordinating the review of this paper and approving it for publication was Dr. Y.-D. Yao. This work was supported in part by the IC Design Education Center (IDEC), Dae-jeon, Korea.
All Science Journal Classification (ASJC) codes
- Modelling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering