Abstract
In this paper, we investigate the problem of code acquisition for band-limited direct-sequence spread-spectrum (DSSS) systems in the presence of sampling offset. By analyzing the detection output property of the traditional noncoherent detection scheme with and without the existence of sampling offset, an improved acquisition scheme that utilizes two decision variables for joint detection is proposed. Numerical results show that the proposed scheme can offer better performance and is more robust to the variation of the sampling offset than the traditional scheme.
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