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A simple expression for the optimization of spread-spectrum code acquisition detectors operating in the presence of carrier-frequency offset

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5 Author(s)
Diez, J. ; Commun. Eng. Dept., Univ. de Cantabria, Santander, Spain ; Pantaleon, C. ; Vielva, L. ; Santamaria, I.
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In this letter, we present a simple expression for the optimization of the threshold detection performance for direct-sequence spread-spectrum code acquisition in the presence of carrier-frequency offset. The proposed scheme divides the total integration time into subintervals, and the results of the coherent integrations performed over these subintervals are noncoherently combined prior to detection. The proposed expression allows obtaining the optimum number of coherent-integration subintervals for a given total integration time.

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Communications, IEEE Transactions on  (Volume:52 ,  Issue: 4 )