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Acquisition performance improvement by Barker sequence repetition in a preamble for DS-CDMA systems with symbol-length spreading codes

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2 Author(s)
Seung Joon Lee ; Broadband Wireless Commun. Res. Dept., Electron. & Telecommun. Res. Inst., Taejon, South Korea ; Jaeyoung Ahn

We investigate the effect on code acquisition performance of using Barker sequence repetition in a preamble for direct-sequence code-division multiple-access systems with symbol-length spreading codes. To do so, we first introduce the properties of repeated Barker sequences; then, using those properties, we derive the false alarm and detection probabilities for the acquisition system with Barker sequence repetition. Some numerical examples show that the acquisition performance of a system using Barker sequence repetition is better than that of a system not using Barker sequence repetition. Also, the performance improvement by use of Barker sequence repetition is shown to be greater with a longer period of the Barker sequence.

Published in:

IEEE Transactions on Vehicular Technology  (Volume:52 ,  Issue: 1 )